My 2013 truck just started doing this this last weekend... iThe fans will start running on high right after starting up for the first time in 30F outside temps... Your video was the first one to come up. I'll be picking up a Thermostat from the dealership on my next days off and hopefully that takes care of it!
If you didn’t change the thermostat prior to this happening, and it’s still the stock one in there, you might have a different issue with possibly coolant level or AC Pressure switch or AC Manifold plugged. But if you’ve recent changed the thermostat then it’s likely your cause. Good luck!
You posted this video 2 years ago and still helping people like me. I own a 2013 f150 and after a replace the faulty water pump and thermostat last month I notice right away the super laud noise of the fan that was driving me crazy, it literally sounded like I was piloting a Cessna plane. I watched your video last night and I fixed it today, (luckily I still had the original thermostat) now it’s back to normal. Thanks you so much for exposing this problem in ford trucks. I’m sure there will be someone else out there that will also benefit from this Crystal clear explanation, thanks again!!
Wish I was in the same boat. Same year as yours and it just yells with that fan every time I try to use my AC or heater 🤦🤦🤦🤦I just haven't used em in a while. A bit cold but all of the cars in traffic aren't watching me 🤦
Thank you for posting. I had my ford dealership replaced my pump, hoses and thermostat. Then my 2013 F150 started doing this exact same thing. I questioned them about it and they played dumb. I purchased this truck new from them and never had it act this way, was driving me crazy. I had enough and decided to replace the thermostat myself. Appears they used some aftermarket thermostat rather than the ford motorcraft band. Not happy with that dealership, I thought they were better than this. Truck is back to normal now with OEM thermostat, thank you!!
Hi Richard.. I am trying to find the solution in my 2016 f150, Did you get a engine code? Or overheating? I don't have any of this ,and my fan run even with the engine off
Definitely going to try it. Thanks to you and that guy. My wife is embarrassed too with the noise. I think it’s cool. I told her that’s what a Raptor is suppose to sound like. I think she stopped believing it. Time to fix it after a year or so.
Just had the same issue last week, after changing my water pump and install a new thermostat on my 2016 f-150 5.0 . The idle was a bit too fast, the fans were on high speed for nothing even in cold days. I saw you video and i went to a ford dealer to buy a Motorcraft thermostat and voilà! It all went back to normal. Thanks a lot!
Same issue on my 2012 f150 work truck, my boss couldn't care less but it's been doing this for 3 years now and I'm at a point where i wanna take the truck home with me one day and try and fix this. Thank you
Thanks for this post I had the same issue. I had replaced the coolant and thermostat in my 2018 5.0 F-150. I live in Florida so run the A/C most of the year. The dealer did not have an OEM thermostst in stock. I ordered one but became inpatiant after a few days so went up to Autozone and got and aftermarket one. My wife and I both noticed the fans were running full blast after I changed the themostat and coolant. After reading your fix I drained the radiator and replaced the themostat with the OEM one that finally came in. Amazingly it solved the problem! I also noticed the truck runs 20 deg F cooler. I am guessing the aftermarket themostat was opening at a higher temp than the OEM. Whatever the fans are definetly running slowewr. Thanks for the information cinci520!!
Same issue, had a shop do an engine swap and got it back with THE FAN... Got a oem replacement from Ford and in 20 min problem solved. You saved me a ton of cash..thanks bud
Hi Greg. I am trying to find the solution to my 2016 f150 . Did you get engine code or overheating? I don't have any of this, but my fan run all the time even with the engine off. What year is your truck?
Thank you so much for your post. Had same issue after getting water pump replaced. After 3 garage's , even a new radiator, I replaced thermostat myself after seeing your post. Two months of running and no load fan noise, runs and sounds great. Can not tell you how grateful for your post I am.
Hi Steve.. I am trying to find the solution in my 2016 f150 .. Did you had engine codes or overheating? I don't have any of this, but my fan run all time even with the engine off What year is your truck?
@@ROR2379 I did not have any engine codes or overheating. My fan would run only when my engine was running and it was inconsistent as to when it would run loud. It turns out I did have a coolant leak last winter and 1 garage did replace the water pump, and I am assuming the Thermostat. All I can say is it has not done it since I put the OEM Thermostat in.
2013 F150 5.0 L I had the issue of high heat fan setting off- couldn’t figure it out after checking internal gauges on dash, diagnostics reading radiator fluid at 106 Celsius. (Was approx. 12-15 degrees higher than should be) I had just replaced upper hose and y connector. No radiator leaks. This video came in clutch- after watching your video I realized the local tire shop installed after market thermostat. 😮I had a certified mechanic to install Motorcraft(OEM Ford) thermostat. Problem solved. After thorough testing - all good- no more issues with high heat fan. Thank you - what a big help! Houston, Texas
Had the same issue just had the water pump and thermostat replaced. The fan was running on high speed most of the time. Did a lot of research and came across this video so I replaced the thermostat with a Ford thermostat and that took care of the issue. Thanks for the post.
....... if you are working the cooling system on a F-150 with the V8 from about 2011 to 2017 or so and you install a new THERMOSTAT be sure to install a new 180 degree F or 187 degree F THERMOSTAT ..... the original Ford factory THERMOSTAT is a 190 degree F THERMOSTAT but if you re-install a new 190 degree F THERMOSTAT in your 2012 or 2013 F-150 with the V8 then the 2 electric radiator fans will run continuously after the engine warms up ...... the electric radiator fans will never cycle off ..... over 200 youtube contributors have observed this now ....... I learned the hard way myself but by watching youtuber's comments I learned how to fix the problem ...... I had installed a brand new 190 degree F THERMOSTAT and sure enough my fans ran all the time ...... I searched youtube and found the answer ..... I hope this makes things easier for my fellow do it yourself guys ..... posted by Jent.
Just replaced the Thermostat and Water Pump and my fan cuts on as I approach operating temp 15 minutes into my drive. Been trying to get air out of the lines for days with no luck. Thank you for this video!!!!
Thanks for putting up this video. I have the 15 f150, and had exactly the same issue. Right after having the garage replace the water pump and thermostat i had high speed fan issues. I checked and the garage used a aftermarket thermostat and "problem solved " thank you!!
Good info! I just replaced my water pump and thermostat and I have the same problem. Fortunately, I saved my old thermostat as a backup, so looks like I might be putting it back in, lol.
I was having the same problem after a water pump & thermostat swap. Put a new motorcraft thermostat in & it fixed it. This video kept me from accidentally flipping my truck over!
Did the same thing as you. Just changed my coolant again yesterday and now I bought a new motor craft thermostat because the fan still kept kicking on. Thank you!
Having this issue now. But I haven’t changed the thermostat. I did change the water pump but that was years ago. And this fan issue just started. Gonna try everything else.
Hi Shane.. I am trying to find the solution to my 2016 f150 . Did you get engine code or overheating? I don't have any of this, but my fan run all the time even with the engine off. What year is your truck?
Hi Aileen. I am trying to find the solution to my 2016 f150 . Did you get engine code or overheating? I don't have any of this, but my fan run all the time even with the engine off. What year is your truck?
Hi CHS191 I am trying to find the solution to my 2016 f150 . Did you get engine code or overheating? I don't have any of this, but my fan run all the time even with the engine off. What year is your truck?
@@ROR2379 my truck is a 2012 with the 5.0L. after the truck warmed up, the fans would turn on and stay on. Problem solved after I installed the Ford thermostat.
I recently purchased a 2011 5.0 the previous owner just had the water pump and thermostat replaced, I am experiencing the fans always running and intermittently overheating at highway speeds it will overheat for a couple of seconds before returning to normal temp. Apparently there are two different Motorcraft thermostats the RT1251 and RT1227. Anyone know which one is the correct one?
FORD F150/5.0 engine/2014. If anyone doubts the thermostat (aftermarket) then contact me. Had waterpump thermostat changed out. Shop put in aftermarket thermostat. Called shop and told them to put in a motorcraft thermostat. They did my truck now does not have coolant fan blowing full bore. Shop front desk did try to charge me $180.00 for swap out… told them i wouldnt pay since their fault they used aftermarket. Mechanic backed me up and I paid 0.00.
Hi Zack. I am trying to find the solution to my 2016 f150 . Did you get engine code or overheating? I don't have any of this, but my fan run all the time even with the engine off. What year is your truck? This fixed your problem on your fan?
Thank for the video!!!!! You definitely help me out I’m going to go ahead and put my old thermostat on. Everything was fine other than the water pump now this problem kicks in. I bought a Duralast thermostat. I’m doing a water pump I figure Switch the thermostat as well.
So glad to find this post. Having fan issue with my 2012 F-150 since putting in aftermarket thermostat. Will order factory one and install. Again thanks so much
My 2012 expedition w 5.4l 3v just had the whole timing kit done at the dealer and now about every other morning on cold startup ( outside air about 70 degrees) the fan kicks on about 2 seconds after start and runs for thirty seconds then shuts down. Never did this before and doesn't seem to have any other problem. Dealer is an hour and a half away so its an ordeal to take it back and leave it overnight to let them check it. Any ideas? Its more of a nuisance thing now but I'm worried it might turn into something more and if too much time gone by the dealer will say too bad, should have brought it right back
I never connected that my high fan speed started when I changed the water pump and thermostat. Dont remember if I got an oem but I’m going to try swapping it out. How the heck does a thermostat affect the fan if it’s operating at the same temp??
@@jeffflowers729 I wondered that myself but my guess is even though they’re rated for the same temp there still might be a slight variance and perhaps it’s just a sensitive system. Others in the comments who couldn’t get an oem motorcraft t-stat, opted for a lower temp aftermarket one and it worked for them.
Same issue here. I put a new thermostat in and the fan started to run constantly. My water pump failed and I replaced it. Same fan problem. Put another thermostat in and to no avail. Going to put an OEM thermostat in next weekend. Will let you know.
Im having that issue after I swapped my thermostat with a non dealer thermostat. Will be stopping by tomorrow to pick one up and hopefully fixes it . Fan noise is way too loud. Thank you for the video
As soon as you start the truck, does the fan start to run high or does the fan kick in a few minutes after starting the truck? My truck’s fan starts as soon as I start the truck.
2013 only does it when I turn ac on. Then fan never shuts off. Did have water pump and thermostat replaced, that's when it seems to have started. The shop says they used a motocraft thermostat though.
So i have a 2018 F150 4x4 4WD with 41,400 miles on it . Last September they (the Dealership) replaced the Cam Phasers . Now for some reason.. My Fan runs alllll the time ! It's loud too ! The guage is reading 1/2 between cold and hot. It hasn't boiled over or anything . Is this the way the motor is supposed to act now that they fix the Cam Phasers ? The fan NEVER kicked on before the fix .
Thanks for the video. I just got mine back from the dealer 3 days ago. They opened to motor up to fix the cam phaser noise… no more noise but now this insanely loud fan and it’s freezing outside. Gotta call tomorrow and give them an ear full… I’ve been documenting this process for my own channel as well.
I have a problem with the 2013 Ford Expedition cooling fans. The fans do not work unless the air conditioner is running. The electrical circuit was checked, but I could not find the fan resistor for control cooling fan.
I’d like to thank you ever so much I wish I had seen your post earlier then after spending hundreds of dollars just shy of thousand $$$ Simple fix much appreciated and thank you for your post.
Great video. After talking to my son about this same problem with his truck, he got a Ford thermostat and it seems that fixed his problem. My issue is with an aftermarket thermostat that is not correct for this truck. What's the difference between the aftermarket unit and the Ford unit? It must have something to do with flow and how wide the thermostat opens. I have read where some models have a temp sensor in the radiator and one in the engine. When the temp of the two do not match, the ECM tells the fan to kick on high perhaps because the flow of coolant is somewhat restricted causing a difference between the two sensors. I assume the Ford thermostat must open wider which allows better flow through the system. If this is true, then the after market thermostats are not compatible and should not be sold as such. Yes, the aftermarket unit may fit, but it seems they don't work. Maybe those who have purchased those aftermarket units should ask for a refund. It might only be $20.00, but if you figure in the time and labor, it kinda stinks that "we the public" are buying parts that are not compatible as advertised.
Exact same problem, Dobbs did the water pump, thermostat for previous owner. Gotta use Motorcraft parts on ford's these days. Hope it isn't a major headache, I'll look it up on here
I also have the same problem brought it shop they replaced the water pump and thermostat brought it back they put a new motor craft thermostat and it's worst truck still seem as its running hot but not registering on dash fan are on but not hi like before ?? I need help 😫
Not being able to physically grab the cooling lines I would say is normal, especially after warm up when the fluid is only 20 degrees cooler than boiling point. When your fan comes on, turn off your heat/ac completely. After a few minutes the rad fan should turn off or if it’s on high then at least go down to a lower speed. If that happens then I would say it’s working as it should. Trust your dash gage and if it’s right around half when the fan is on then I would say it is good. your fan will come on from time to time in order to maintain that halfway temp on the gage. It may also be a case where you have to give it a few days of driving because your cooling system needs to work out the air bubbles. I’m told the coolant system is self priming but not sure how true that is. You can also unscrew the cap a few times after it’s been running to let out excess air bubbles. Hopefully that works for you. The fan will still come on from time to time as it should, as long as it’s not running on high continuously. Good luck man I hope that helps.
Hi Pedro... I am trying to find the solution to my 2016 f150 . Did you get engine code or overheating? I don't have any of this, but my fan run all the time even with the engine off. What year is your truck? This fixed your problem on your fan?
@@ROR2379 mine is 2011. Never got an engine code. But I was overheating. I put in motorcraft thermostat and the problem was immediately solved. I guess different thermostats work at different temperatures. My truck didn’t like those differences.
I just don't see what the thermostat got to do with electric fans. mines doing it, and I changed thermostat while doing my (y) pipe change!! however it's always done it and it's annoying me. so loud!
Hey Michael, do you know if the thermostat you replaced it with is the motor craft? I am not sure either why it causes it. But if you changed it out with the motor craft thermostat then there are other things you can look at such as the ac pressure switch, the ac manifold block and the ac compressor. But if it just started doing it after changing out the thermostat and y pipe then that’s probably where I’d be looking. It might also take a bit for your system to bleed out any air if you have replaced coolant or added it.
@@cinci520 thanks for the reply!! When I changed the (y) pipe I did thermostat to but the truck has always had the fan issue but just thought it was normal to the truck. However someone had replaced the original part because it was the same brand as O'Reilly's. Also the truck never had cold ac and never leaked condensation so I added 134a to it and got it to start dripping but fan issue never stopped. It's just so loud!
Hi Mark.. I am trying to find the solution to my 2016 f150 . Did you get engine code or overheating? I don't have any of this, but my fan run all the time even with the engine off. What year is your truck?
@@ROR2379 I’ve now fixed the issue with both at 2013 5.0 and a 2014 3.5 F150s. The 2013 the Fan ran constantly on high and I actually had it replaced before finding out about the Thermostat. The Ford Motorcraft Thermostat fixed the issue in the 2013 5.0 immediately. The 2014 thankfully I got ahead of it and as soon as I realized the fan was kicking on high when it didn’t need to I had it switched. Sure enough it had been changed before and had an aftermarket brand thermostat in it. Must be something about the calibration but the Ford Motorcraft Thermostat seems to be the fix. Go with the OEM replacement on this one. Worth the few extra bucks up front in this case.
Thank you for this video, finally found the issue after reading about it. I too just changed my water pump and thermostat. Now my fans kick in non stop. Shop couldn't even get the fans to kick in and everything ran normal for them. My pump and stat are also aftermarket, but is a 190 stat.
Thanks for the comment, my aftermarket stats were 190, as is the stock. But for some reason they don’t like the aftermarket ones. Did you manage to get it fixed? Was the stat the issue?
@@cinci520 i haven't had time to change it back yet. I have the stat that I took out. I just thought to replace it since the pump was shot too. I'll order one a new one from the dealer though, and get to work on it soon
@Bobby Elias it worked for me. Swapped out the thermostat back to the stock one. Works just fine now. Although I had the upper radiator hose leak right after I filled the coolant back up, after I changed that out, then it's all tip top
Check your freon level before you do anything. Mine was over charged by the previous owner which was causing the fan to come on constantly. Emptied the freon, filled it with fresh freon to the correct level...no more fan problems.
Hmm that’s odd, I’m not too sure but will just take some guesses. I’d say check the relay itself first, with the vehicle running and the fan is on to remove the relay and then lightly plug it back in and see if you can feel it clicking open and closed. If not clicking and the fan just come back maybe start with replacing that? Or finding a used one? Another guess would be the clutch on the fan itself may be seized or seizing, I’ve heard if that happens then it somethings still wants to draw power. These are total shots in the dark my friend but I hope it helps.
I am having the exact same problem.2015 F-150, 3.5 engine, 64, 000 miles in Wa. State.Fan started to stay on when temperatures dropped down into the teens. The warm heat came on in vehicle so I thought the thermostat was ok.......so hmmmm...need stock ford thermostat??I have not changed the water pump or thermostat. The trk still stays cool and warms up ok......no major work done to the truck engine at all.....
That is interesting especially since the thermostat hasn’t been touched. Does the fan just stay stuck on high once it’s on? You can also take a look at the fan relays first since that’s just a matter of looking, just to rule those out before anything else.
I just replaced my waterpump and a gates brand thermostat just started doing this . I will be replacing with oem thermostat hopefully fixes the issue .
I recently purchased a 2011 5.0 the previous owner just had the water pump and thermostat replaced, I am experiencing the fans always running and intermittently overheating at highway speeds it will overheat for a couple of seconds before returning to normal temp. Apparently there are two different Motorcraft thermostats the RT1251 and RT1227. Anyone know which one is te correct one?
Mine is a 2013 model with the V6 and that noise started 2 seconds after I started adding refrigerant for the AC. After the truck was turned off Ann sit for a few minutes and start back up again without the AC on the fan stayed off. This was less than a month ago, now the fan is one when the ignition is on with or without the AC.
I wish I knew a more specific answer for you, but with what you’re describing there’s a few things you can check suck as the AC Pressure switch mounted on the cooling line near your battery, as well as a possible Freon leak? Also check the relays to make sure they’re functioning properly. Is your AC level getting low after some use?
Have you recently changed out the thermostat? If not, I’d say start by checking coolant level. If that’s fine and you haven’t replaced the thermostat you can try the AC pressure switch at the top by the battery. I’ve heard that is a very common culprit for this issue. I hope this helps.
2017 F150 here. They put in a new condenser since it was cracked. Got about a month out of it before it started doing this again. Brought it in to Ford today, they can't figure it out. No error codes coming up.
So i did what you said and it worked out but once the engine reaches the temperature the fan still goes on high and doesn't stop did that happen to you
Yes, but only for a few days, maybe a week. I had to add some coolant after the system had burped itself. How long has yours been doing it? If you start your truck with the air conditioning completely turned off until the truck reaches temperature does it still continue the problem?
Had exactly the same issue, put a oreilly thermostat in and fan stayed on. After evac on ac and switches I put a factory ford in it and it worked. But mine wasn't stuck but ford said the ecm is so sensitive.. IT'S TRUE!!
I'm having the same problem. It takes a little bit of driving around before it kicks on and never shuts off. I'd like to try the AC pressure switch first. Do you have an idea of where to order that part? Thanks.
I had ordered mine off Amazon. Here’s the link mine is from amazon Canada. If you’re elsewhere you can try amazon.com. Likely easiest to get from your nearest automotive parts supplier. Just give them your vehicle’s information and they should get you taken care of. www.amazon.ca/Universal-Conditioner-SW-10101C-Clutch/dp/B01C4AO6FS/ref=mp_s_a_1_2?dchild=1&keywords=f150+ac+pressure+switch&qid=1620864687&sr=8-2 Good luck!
Bought 2004 Ford 4.6 litre. As soon as I start the truck fan kick in. Tried to unplug high pressure AC sensor. No luck. Should I tried to change the thermostat? I was wondering your fan kick in after sometime or same time once you started the truck? No codes on dash.
Does the fan kick on instantly the second it’s started up until it’s turned off? I’ve heard of the fan clutch being an issue for some. So if the clutch won’t disengage then it’ll always be running. It’s an easy check, if you watch for engagement or disengagement on your fan….also check the ac compressor clutch while you’re looking, and see if they’re functioning normally right at startup before it comes on continuously.
It kicks k in instantly, the second it’s started up so that means it’s not the thermostat. I checked the fan and it spins 2-3 inches by hand. If the clutch is bad i don’t think I can move by hand. Then I unplugged the AC sensor on high pressure side. Once I pushed the paper pin in sensor connector I can hear the sound of engaging the AC clutch. Any other options please?
Maybe I just got lucky but I fixed the problem with a couple of quarts of Prestone Antifreeze coolant. I have a 2013 F-150. Start making the roaring fan noise last Summer. Put the coolant in the rezervoir and the noise stopped. The noise started again last week when it got to be about 90 degrees out. Put a couple of quarts in yesterday and drove about 150 miles with a lot of stops in town. No noise. Give this a try. Maybe you will be lucky too.
Just changed my water pump and thermostat on my 2013 5.0. Same issue. My fans turned on after 10 minutes of running. At 70 mph no AC on. outside temp was 71. Fans screamed for the whole 6 hour interstate trip. Just purchased the Motorcraft BR3E-8575 from ford dealer. Remember, just because after market parts say "this part is exact fit" does NOT mean it will work. I had this exact same issue with front rotors replacement from a chain store place. It'll fit but does not have same OEM specs. after market rotors are thinner. Cheaper is NOT cheaper.
Got a question I exchange everything As well my water pump everything thermostat refreshed the coolant. I did put a different thermostat which is from a brand called NAPA for it but ever since I completed the work on it and exchange the hoses no leaks and oil change did complete inspection myself on my truck. Ever since I completed it the fan is just full blast and what you recommend to make it work or best possible solution ?
That is nearly the same as what I went through. I would suggest ordering a new thermostat from your Ford dealership and putting that in instead of the Napa one. Just let the truck cool down, disconnect the hose on the thermostat housing and catch the coolant in a container. Replace the thermostat and o ring and put the coolant back in. I hope it works for you, and hopefully you can check back in here letting us know. Good luck!
@@cinci520 I have gone to Ford dealership and ordered the thermostat this morning. Because before I fixed it, it was running perfectly fine the fan as well it’ll turn on when I ran out of coolant for short period of times and turn off but when everything changed it’s just full blast. Hopefully it’ll do the trick. Also, wanted to say that as I drove in the highway the engine coolant light goes above the middle average half way to almost 3/4 full as I accelerate do you think that could be it or something else I mean it’s no leak everything is changed and as I drive normally on roads it just remains half way.
The first time I changed the thermostat, to the aftermarket one, my gauge did the same thing where it was going to 3/4. After a few days of driving and opening the fluid bottle cap a few times and watching it bubble that stopped. But I had to take the cap off and run it a bit. After I changed back to the Ford thermostat though, that never happened and it was perfect. Your experience say identical to mine from start to finish, so hopefully the new thermostat will fix your issue like it did for me.
I went through the same thing with my 2015 F150 after replacing the water pump. The OEM thermostat fixed mine. eEerything works like it is supposed to. I've heard that using after market spark plugs wll not fix a misfire too.
Thank you,. Had the same issue. I changed out all my High power relay fuses then my a/c blower motor resistor and had not luck with the fans turning off. Now I have another issue my heat and A/C come on on there own along with the fans! I will try the thermostat next. then I give up.
I just had my radiator replaced , the mechanic also replaced the thermostat with an aftermarket (wanted a Ford part but not in stock) , anyway my fan has been running like crazy now for several days ..... ALSO , in the past they had replaced that thermostat , again an aftermarket , and my engine light came on , code said "Thermostat" , I had them put a Ford Thermostat in back then , engine light went off .... I HOPE it is just a thermostat to solve this fan problem , but I will say this , it appears to me my 2010 F-150 4.6 wants ONLY a Ford OEM Thermostat ...... and frankly I am somewhat thinking "only Ford Parts" from now on .... Maybe NAPA , but these little "common auto parts stores" we see everywhere (you know the names) , I am having doubts about their parts .. I have used NAPA parts on a repair or two , and they seem to be doing fine ..... I'm only moderately mechanical savvy , so take what I say with a grain of salt ...... I do firmly believe "FORD OEM THERMOSTAT ONLY" though , going to replace it soon
UPDATE ..... Replaced thermostat with Ford OEM part ...... PROBLEM SOLVED , no more fan going crazy running on high all the time , and it's not even summer yet !!!!! FORD OEM THERMOSTAT , problem solved ..... I'm beginning to think these small box auto stores are just selling the cheapest chinese junk they can get their hands on ...... I've had issues with a few of their parts , like brake discs overheating and warping within a month ..... ridiculous to even sell that kind of JUNK
Omg.!! Thanks 🙏🏽 I was having the same issue with 2012. Did ur oil gauge marked temperature right out the bat when u turned it on in the morning. Even the other gauges marked low temps, but the oil was kinda odd and the fans started to run like crazy.
Thanks for posting your video. Just changed water pump and thermostat with the same high speed fan issue, and I put an Autozone thermostat in. Will be putting the stock one back in in the morning.
My 2013 truck just started doing this this last weekend... iThe fans will start running on high right after starting up for the first time in 30F outside temps... Your video was the first one to come up. I'll be picking up a Thermostat from the dealership on my next days off and hopefully that takes care of it!
If you didn’t change the thermostat prior to this happening, and it’s still the stock one in there, you might have a different issue with possibly coolant level or AC Pressure switch or AC Manifold plugged. But if you’ve recent changed the thermostat then it’s likely your cause. Good luck!
@@cinci520 the water pump was changed but that was a while ago... this is a quick easy attempt. If not I'll work up that list. Thanks
You posted this video 2 years ago and still helping people like me. I own a 2013 f150 and after a replace the faulty water pump and thermostat last month I notice right away the super laud noise of the fan that was driving me crazy, it literally sounded like I was piloting a Cessna plane. I watched your video last night and I fixed it today, (luckily I still had the original thermostat) now it’s back to normal. Thanks you so much for exposing this problem in ford trucks. I’m sure there will be someone else out there that will also benefit from this Crystal clear explanation, thanks again!!
Wish I was in the same boat. Same year as yours and it just yells with that fan every time I try to use my AC or heater 🤦🤦🤦🤦I just haven't used em in a while. A bit cold but all of the cars in traffic aren't watching me 🤦
Lucky guy. I tossed my original thermostat, so back to the dealer I go.
@@cw9533 you should be able to get a new original thermostat at the Ford dealer.
@K I L L E R JOE Thank you, hopefully that fixes it.
Thank you for posting. I had my ford dealership replaced my pump, hoses and thermostat. Then my 2013 F150 started doing this exact same thing. I questioned them about it and they played dumb. I purchased this truck new from them and never had it act this way, was driving me crazy. I had enough and decided to replace the thermostat myself. Appears they used some aftermarket thermostat rather than the ford motorcraft band. Not happy with that dealership, I thought they were better than this. Truck is back to normal now with OEM thermostat, thank you!!
Hi Richard..
I am trying to find the solution in my 2016 f150,
Did you get a engine code? Or overheating?
I don't have any of this ,and my fan run even with the engine off
Definitely going to try it. Thanks to you and that guy. My wife is embarrassed too with the noise. I think it’s cool. I told her that’s what a Raptor is suppose to sound like. I think she stopped believing it. Time to fix it after a year or so.
😂
Just had the same issue last week, after changing my water pump and install a new thermostat on my 2016 f-150 5.0 . The idle was a bit too fast, the fans were on high speed for nothing even in cold days. I saw you video and i went to a ford dealer to buy a Motorcraft thermostat and voilà! It all went back to normal. Thanks a lot!
Same issue on my 2012 f150 work truck, my boss couldn't care less but it's been doing this for 3 years now and I'm at a point where i wanna take the truck home with me one day and try and fix this. Thank you
Thanks for this post I had the same issue. I had replaced the coolant and thermostat in my 2018 5.0 F-150. I live in Florida so run the A/C most of the year. The dealer did not have an OEM thermostst in stock. I ordered one but became inpatiant after a few days so went up to Autozone and got and aftermarket one. My wife and I both noticed the fans were running full blast after I changed the themostat and coolant. After reading your fix I drained the radiator and replaced the themostat with the OEM one that finally came in. Amazingly it solved the problem! I also noticed the truck runs 20 deg F cooler. I am guessing the aftermarket themostat was opening at a higher temp than the OEM. Whatever the fans are definetly running slowewr. Thanks for the information cinci520!!
Same issue, had a shop do an engine swap and got it back with THE FAN...
Got a oem replacement from Ford and in 20 min problem solved. You saved me a ton of cash..thanks bud
That’s awesome! I’m happy it worked for you.
Hi Greg.
I am trying to find the solution to my 2016 f150 .
Did you get engine code or overheating?
I don't have any of this, but my fan run all the time even with the engine off.
What year is your truck?
Thank you so much for your post. Had same issue after getting water pump replaced. After 3 garage's , even a new radiator, I replaced thermostat myself after seeing your post. Two months of running and no load fan noise, runs and sounds great. Can not tell you how grateful for your post I am.
Hi Steve..
I am trying to find the solution in my 2016 f150 ..
Did you had engine codes or overheating?
I don't have any of this, but my fan run all time even with the engine off
What year is your truck?
@@ROR2379 I did not have any engine codes or overheating. My fan would run only when my engine was running and it was inconsistent as to when it would run loud. It turns out I did have a coolant leak last winter and 1 garage did replace the water pump, and I am assuming the Thermostat. All I can say is it has not done it since I put the OEM Thermostat in.
2013 F150 5.0 L
I had the issue of high heat fan setting off- couldn’t figure it out after checking internal gauges on dash, diagnostics reading radiator fluid at 106 Celsius. (Was approx. 12-15 degrees higher than should be) I had just replaced upper hose and y connector. No radiator leaks. This video came in clutch- after watching your video I realized the local tire shop installed after market thermostat. 😮I had a certified mechanic to install Motorcraft(OEM Ford) thermostat. Problem solved.
After thorough testing - all good- no more issues with high heat fan.
Thank you - what a big help!
Houston, Texas
Dude I’ve been dealing with it for a year. Thank you for making this video
Had the same issue just had the water pump and thermostat replaced. The fan was running on high speed most of the time. Did a lot of research and came across this video so I replaced the thermostat with a Ford thermostat and that took care of the issue. Thanks for the post.
....... if you are working the cooling system on a F-150 with the V8 from about 2011 to 2017 or so and you install a new THERMOSTAT be sure to install a new 180 degree F or 187 degree F THERMOSTAT ..... the original Ford factory THERMOSTAT is a 190 degree F THERMOSTAT but if you re-install a new 190 degree F THERMOSTAT in your 2012 or 2013 F-150 with the V8 then the 2 electric radiator fans will run continuously after the engine warms up ...... the electric radiator fans will never cycle off ..... over 200 youtube contributors have observed this now ....... I learned the hard way myself but by watching youtuber's comments I learned how to fix the problem ...... I had installed a brand new 190 degree F THERMOSTAT and sure enough my fans ran all the time ...... I searched youtube and found the answer ..... I hope this makes things easier for my fellow do it yourself guys ..... posted by Jent.
I am going throw the old one back in this weekend. This problem started once I replaced to a new one.
@@kinseya7217 did it work
@@loganallen6102 I have yet to do it yet, I will keep you posted.
You are the man , whole new ac in my truck and threw 190 oem in, will try the 180 or 187
Does the 187 or 180 have to be ford motorcraft brand?
Thanks so much for this video , I'm having the same problem, changed out my water pump and thermostat , and my fan going crazy
Just replaced the Thermostat and Water Pump and my fan cuts on as I approach operating temp 15 minutes into my drive. Been trying to get air out of the lines for days with no luck. Thank you for this video!!!!
Hopefully it helped! Did you use an aftermarket thermostat like I did?
@@cinci520 yes aftermarket option from NAPA. Just ordered the OEM thermostat and gasket online. Will try to fix next week. Thanks
@@mll7674 use the OEM parts. I used a generic thermostat the first time and when I replaced with OEM it worked fine. Hope this helps
I have the same issue and more likely your video is the solution for it. Thanks man.
Thank you SO MUCH FOR THIS VIDEO! Your our HERO! You saved us time and money and got us QUIETLY on the road!!!! You ROCK!!! Brother!
Thanks for putting up this video. I have the 15 f150, and had exactly the same issue. Right after having the garage replace the water pump and thermostat i had high speed fan issues. I checked and the garage used a aftermarket thermostat and "problem solved " thank you!!
Brother what size thermostat aftermarket
Good info! I just replaced my water pump and thermostat and I have the same problem. Fortunately, I saved my old thermostat as a backup, so looks like I might be putting it back in, lol.
I was having the same problem after a water pump & thermostat swap. Put a new motorcraft thermostat in & it fixed it. This video kept me from accidentally flipping my truck over!
Awesome to hear and I appreciate the positive feedback. Cheers!
Did the same thing as you. Just changed my coolant again yesterday and now I bought a new motor craft thermostat because the fan still kept kicking on. Thank you!
Having this issue now. But I haven’t changed the thermostat. I did change the water pump but that was years ago. And this fan issue just started. Gonna try everything else.
Im thinking you’re fine for the thermostat. Another common cause is the AC Pressure switch near the battery.
@@cinci520 found out that I was extremely low on coolant.
Perfect! Nice easy fix
Really appreciate your post...I had the same issue..replaced the thermostat with one from ford and fixed the issue. Thanks for sharing!!
Hi Shane..
I am trying to find the solution to my 2016 f150 .
Did you get engine code or overheating?
I don't have any of this, but my fan run all the time even with the engine off.
What year is your truck?
Thank you!!! I’m in Alaska, and this is happening to me right now!!!
I fix this issue with Motocraft thermostat , Now no crazy fan noise thanks bro 😎
Hi Aileen.
I am trying to find the solution to my 2016 f150 .
Did you get engine code or overheating?
I don't have any of this, but my fan run all the time even with the engine off.
What year is your truck?
Thanks for the video. Replacing the aftermarket thermostat also fixed my 2012 5.0L.
Hi CHS191
I am trying to find the solution to my 2016 f150 .
Did you get engine code or overheating?
I don't have any of this, but my fan run all the time even with the engine off.
What year is your truck?
@@ROR2379 my truck is a 2012 with the 5.0L. after the truck warmed up, the fans would turn on and stay on. Problem solved after I installed the Ford thermostat.
I didn't get any over temp issues, just the fans running constantly.
Thanks for the video I just replaced the thermostat and I tink it fix the problem 3 years after I put on the aftermarket one thanks again im so happy
That’s great to hear! Thank you for updating. Cheers!
'16 F150, coyote engine same issue, I will try to find an original Ford thermostat. Thanks man for posting, very helpful
This fixed my issue as well. I was also overheating at highway speeds. Fixed both loud fan and overheating. Thanks man !!
I recently purchased a 2011 5.0 the previous owner just had the water pump and thermostat replaced, I am experiencing the fans always running and intermittently overheating at highway speeds it will overheat for a couple of seconds before returning to normal temp. Apparently there are two different Motorcraft thermostats the RT1251 and RT1227. Anyone know which one is the correct one?
@@everettm7895 Checked, looks like they are both 190 degree
Having the exact same problem after recently replacing the water pump and thermostat. Glad I ran across your video. Thanks for posting this.
Thank you for the comment, I hope it helps. Good luck!
@@cinci520 that fixed the problem. Thanks again for posting your experience.
@@jonathonpatterson9642how are you bud
@@jonathonpatterson9642I replaced the thermostat 190 degree my fan don’t stop what can I do ?
FORD F150/5.0 engine/2014. If anyone doubts the thermostat (aftermarket) then contact me. Had waterpump thermostat changed out. Shop put in aftermarket thermostat. Called shop and told them to put in a motorcraft thermostat. They did my truck now does not have coolant fan blowing full bore. Shop front desk did try to charge me $180.00 for swap out… told them i wouldnt pay since their fault they used aftermarket. Mechanic backed me up and I paid 0.00.
2011 5.0 changeY pipe and thermostat and fans did run wide open redid thermostat to an OEM and problem solved thanks for the video.
That’s great to hear!
Thank you. Tried everything else before I found your video. Wish I had watched it sooner
Hi Zack.
I am trying to find the solution to my 2016 f150 .
Did you get engine code or overheating?
I don't have any of this, but my fan run all the time even with the engine off.
What year is your truck?
This fixed your problem on your fan?
At last thank you this fan is driving me crazy I will try that tomorrow
Thank for the video!!!!! You definitely help me out I’m going to go ahead and put my old thermostat on. Everything was fine other than the water pump now this problem kicks in. I bought a Duralast thermostat. I’m doing a water pump I figure Switch the thermostat as well.
Thank you for this video. I’m picking up a new OEM thermostat Monday!
So glad to find this post. Having fan issue with my 2012 F-150 since putting in aftermarket thermostat. Will order factory one and install. Again thanks so much
My 2012 expedition w 5.4l 3v just had the whole timing kit done at the dealer and now about every other morning on cold startup ( outside air about 70 degrees) the fan kicks on about 2 seconds after start and runs for thirty seconds then shuts down. Never did this before and doesn't seem to have any other problem. Dealer is an hour and a half away so its an ordeal to take it back and leave it overnight to let them check it.
Any ideas? Its more of a nuisance thing now but I'm worried it might turn into something more and if too much time gone by the dealer will say too bad, should have brought it right back
I never connected that my high fan speed started when I changed the water pump and thermostat. Dont remember if I got an oem but I’m going to try swapping it out. How the heck does a thermostat affect the fan if it’s operating at the same temp??
@@jeffflowers729 I wondered that myself but my guess is even though they’re rated for the same temp there still might be a slight variance and perhaps it’s just a sensitive system. Others in the comments who couldn’t get an oem motorcraft t-stat, opted for a lower temp aftermarket one and it worked for them.
@@cinci520 but it knows almost the moment you start the cold engine?
Same issue here. I put a new thermostat in and the fan started to run constantly. My water pump failed and I replaced it. Same fan problem. Put another thermostat in and to no avail. Going to put an OEM thermostat in next weekend. Will let you know.
Im having that issue after I swapped my thermostat with a non dealer thermostat. Will be stopping by tomorrow to pick one up and hopefully fixes it . Fan noise is way too loud. Thank you for the video
As soon as you start the truck, does the fan start to run high or does the fan kick in a few minutes after starting the truck? My truck’s fan starts as soon as I start the truck.
I see comments on the thermostat tempature differance from 195 to 180 did go with a certain tempature thermostat
The fan of my troca sounds loud only when I turn on the ac do I also have to replace the thermostat am I confused 😐?
Thanks so much money is doing the same thing right now thought I would look it up your video has been very helpful
2013 only does it when I turn ac on. Then fan never shuts off. Did have water pump and thermostat replaced, that's when it seems to have started. The shop says they used a motocraft thermostat though.
So i have a 2018 F150 4x4 4WD with 41,400 miles on it . Last September they (the Dealership) replaced the Cam Phasers . Now for some reason.. My Fan runs alllll the time ! It's loud too ! The guage is reading 1/2 between cold and hot. It hasn't boiled over or anything . Is this the way the motor is supposed to act now that they fix the Cam Phasers ? The fan NEVER kicked on before the fix .
Can you find out if they changed the thermostat or had to remove it to access the phasers?
@@cinci520 not sure. I'll ask when they call me back. That was 2 hours ago
Thanks for the video. I just got mine back from the dealer 3 days ago. They opened to motor up to fix the cam phaser noise… no more noise but now this insanely loud fan and it’s freezing outside. Gotta call tomorrow and give them an ear full… I’ve been documenting this process for my own channel as well.
I have a problem with the 2013 Ford Expedition cooling fans. The fans do not work unless the air conditioner is running. The electrical circuit was checked, but I could not find the fan resistor for control cooling fan.
I’d like to thank you ever so much I wish I had seen your post earlier then after spending hundreds of dollars just shy of thousand $$$
Simple fix much appreciated and thank you for your post.
Great video. After talking to my son about this same problem with his truck, he got a Ford thermostat and it seems that fixed his problem. My issue is with an aftermarket thermostat that is not correct for this truck. What's the difference between the aftermarket unit and the Ford unit? It must have something to do with flow and how wide the thermostat opens. I have read where some models have a temp sensor in the radiator and one in the engine. When the temp of the two do not match, the ECM tells the fan to kick on high perhaps because the flow of coolant is somewhat restricted causing a difference between the two sensors. I assume the Ford thermostat must open wider which allows better flow through the system. If this is true, then the after market thermostats are not compatible and should not be sold as such. Yes, the aftermarket unit may fit, but it seems they don't work. Maybe those who have purchased those aftermarket units should ask for a refund. It might only be $20.00, but if you figure in the time and labor, it kinda stinks that "we the public" are buying parts that are not compatible as advertised.
Yup this fixed my issue as well. Aftermarket thermostat had the fans going wild.. pretty stupid Ford. Thanks
Exact same problem, Dobbs did the water pump, thermostat for previous owner. Gotta use Motorcraft parts on ford's these days. Hope it isn't a major headache, I'll look it up on here
Checking back in after replacing my thermostat back to a 190° motorcraft. The issue is fixed! So stoked.
Great to hear! Thank you for checking back in and sharing.
@@cinci520 definitely!
Fan starts as soon as you start the truck or it takes few minutes before kick in?
@@sanjayd9065 mine would idle until warmed up but once it was warm the fan was basically always on. Until switching bag to an OEM thermostat.
I also have the same problem brought it shop they replaced the water pump and thermostat brought it back they put a new motor craft thermostat and it's worst truck still seem as its running hot but not registering on dash fan are on but not hi like before ?? I need help 😫
Hey Brian, so after the shop put a motorcraft thermostat, are you saying the fan is still coming on but not just as much as before?
@@cinci520 yeah man thats what I'm saying and also I cnt grab the radiator hose for a sec doesn't that its running hot and not register on the dash ?
Not being able to physically grab the cooling lines I would say is normal, especially after warm up when the fluid is only 20 degrees cooler than boiling point.
When your fan comes on, turn off your heat/ac completely. After a few minutes the rad fan should turn off or if it’s on high then at least go down to a lower speed. If that happens then I would say it’s working as it should. Trust your dash gage and if it’s right around half when the fan is on then I would say it is good. your fan will come on from time to time in order to maintain that halfway temp on the gage. It may also be a case where you have to give it a few days of driving because your cooling system needs to work out the air bubbles. I’m told the coolant system is self priming but not sure how true that is. You can also unscrew the cap a few times after it’s been running to let out excess air bubbles. Hopefully that works for you. The fan will still come on from time to time as it should, as long as it’s not running on high continuously. Good luck man I hope that helps.
2013 f150 was doing same for no reason I replaced the valve thing and the end of ac line on fire wall can't remember what it's called
Can it be reason my truck is overheating?
I have the same problem ,so the solution is to use a original ford thermostat?
If you have switch it out with an aftermarket one, it’s likely the culprit. Either put the old one back in or replace with the motorcraft replacement.
I’m having the same issue. Thank you for the video. Will try this tomorrow.
Hi Pedro...
I am trying to find the solution to my 2016 f150 .
Did you get engine code or overheating?
I don't have any of this, but my fan run all the time even with the engine off.
What year is your truck?
This fixed your problem on your fan?
@@ROR2379 mine is 2011. Never got an engine code. But I was overheating. I put in motorcraft thermostat and the problem was immediately solved. I guess different thermostats work at different temperatures. My truck didn’t like those differences.
I just don't see what the thermostat got to do with electric fans. mines doing it, and I changed thermostat while doing my (y) pipe change!! however it's always done it and it's annoying me. so loud!
Hey Michael, do you know if the thermostat you replaced it with is the motor craft? I am not sure either why it causes it. But if you changed it out with the motor craft thermostat then there are other things you can look at such as the ac pressure switch, the ac manifold block and the ac compressor. But if it just started doing it after changing out the thermostat and y pipe then that’s probably where I’d be looking. It might also take a bit for your system to bleed out any air if you have replaced coolant or added it.
@@cinci520 thanks for the reply!! When I changed the (y) pipe I did thermostat to but the truck has always had the fan issue but just thought it was normal to the truck. However someone had replaced the original part because it was the same brand as O'Reilly's. Also the truck never had cold ac and never leaked condensation so I added 134a to it and got it to start dripping but fan issue never stopped. It's just so loud!
Had the same problem today fixed it with a new thermostat from Ford motor company.
I'm just curious why this happens??
Thank you for this video! Had tried many things like you and this finally has the issue taken care of!
Hi Mark..
I am trying to find the solution to my 2016 f150 .
Did you get engine code or overheating?
I don't have any of this, but my fan run all the time even with the engine off.
What year is your truck?
@@ROR2379 I’ve now fixed the issue with both at 2013 5.0 and a 2014 3.5 F150s. The 2013 the Fan ran constantly on high and I actually had it replaced before finding out about the Thermostat. The Ford Motorcraft Thermostat fixed the issue in the 2013 5.0 immediately.
The 2014 thankfully I got ahead of it and as soon as I realized the fan was kicking on high when it didn’t need to I had it switched. Sure enough it had been changed before and had an aftermarket brand thermostat in it.
Must be something about the calibration but the Ford Motorcraft Thermostat seems to be the fix. Go with the OEM replacement on this one. Worth the few extra bucks up front in this case.
@@markscenters Thank you..
Just i order the motorcraft thermostat. Hopefully fix my problem
Thank you for this video, finally found the issue after reading about it. I too just changed my water pump and thermostat. Now my fans kick in non stop. Shop couldn't even get the fans to kick in and everything ran normal for them. My pump and stat are also aftermarket, but is a 190 stat.
Thanks for the comment, my aftermarket stats were 190, as is the stock. But for some reason they don’t like the aftermarket ones. Did you manage to get it fixed? Was the stat the issue?
@@cinci520 i haven't had time to change it back yet. I have the stat that I took out. I just thought to replace it since the pump was shot too. I'll order one a new one from the dealer though, and get to work on it soon
@Bobby Elias it worked for me. Swapped out the thermostat back to the stock one. Works just fine now. Although I had the upper radiator hose leak right after I filled the coolant back up, after I changed that out, then it's all tip top
I'm having the same problem but it only happens when I turn the air conditioning on ??? Maybe its the high pressure switch like you said. Not sure
I have a 2019 Ford Expedition 3.5 EcoBoost...and I have the same problem...the fan kicks in only when the AC is on....... it's annoying.
Check your freon level before you do anything. Mine was over charged by the previous owner which was causing the fan to come on constantly. Emptied the freon, filled it with fresh freon to the correct level...no more fan problems.
My 2014 f150 fan keeps going on when the vehicle turned off any advice. I had to take the relay fuse out to turn it off so it would kill my battery.
Hmm that’s odd, I’m not too sure but will just take some guesses. I’d say check the relay itself first, with the vehicle running and the fan is on to remove the relay and then lightly plug it back in and see if you can feel it clicking open and closed. If not clicking and the fan just come back maybe start with replacing that? Or finding a used one?
Another guess would be the clutch on the fan itself may be seized or seizing, I’ve heard if that happens then it somethings still wants to draw power.
These are total shots in the dark my friend but I hope it helps.
mine does it soon as I start it up. new thermostat and y pipe it doesn't do it until I turn ac on
Is it because the 3rd party t-stats aren’t opening properly or are they labeled the incorrect temperature?
I am not sure but my guess would be the temp opening on them isn’t accurate.
I have this problem I replaced thermostat and I change a lot of parts put still have this problem
I need help please
I am having the exact same problem.2015 F-150, 3.5 engine, 64, 000 miles in Wa. State.Fan started to stay on when temperatures dropped down into the teens. The warm heat came on in vehicle so I thought the thermostat was ok.......so hmmmm...need stock ford thermostat??I have not changed the water pump or thermostat. The trk still stays cool and warms up ok......no major work done to the truck engine at all.....
So.....I really want that fan off! I kept thinking thermostat!!!!!
That is interesting especially since the thermostat hasn’t been touched. Does the fan just stay stuck on high once it’s on? You can also take a look at the fan relays first since that’s just a matter of looking, just to rule those out before anything else.
You did help the next person. Thank You.
I just replaced my waterpump and a gates brand thermostat just started doing this . I will be replacing with oem thermostat hopefully fixes the issue .
Good luck! I hope it fixes your issue.
I installed a new Ford Motorcraft thermostat and have the same problem with the fan.
My 2014 is doing the exact same thing after I put in a after market thermostat. It’s going to get replaced Friday with a ford one.
Changed water pump and thermostat and fan stays on. Will replace the thermostat and report back if it works. Thank you,
Thanks this fixed my 2014 after water pump, thermostat change
I recently purchased a 2011 5.0 the previous owner just had the water pump and thermostat replaced, I am experiencing the fans always running and intermittently overheating at highway speeds it will overheat for a couple of seconds before returning to normal temp. Apparently there are two different Motorcraft thermostats the RT1251 and RT1227. Anyone know which one is te correct one?
RT1251 for the F150
Mine is a 2013 model with the V6 and that noise started 2 seconds after I started adding refrigerant for the AC. After the truck was turned off Ann sit for a few minutes and start back up again without the AC on the fan stayed off. This was less than a month ago, now the fan is one when the ignition is on with or without the AC.
I wish I knew a more specific answer for you, but with what you’re describing there’s a few things you can check suck as the AC Pressure switch mounted on the cooling line near your battery, as well as a possible Freon leak? Also check the relays to make sure they’re functioning properly. Is your AC level getting low after some use?
My fan is loud and stays on high when the AC is on Max cool. Other than that the fan actually rarely kicks on when idiling . Driving I cannot tell
So I just did a 3 hour trip In my truck and the fan is non stop thoughts f150 2017 5.0
Have you recently changed out the thermostat? If not, I’d say start by checking coolant level. If that’s fine and you haven’t replaced the thermostat you can try the AC pressure switch at the top by the battery. I’ve heard that is a very common culprit for this issue. I hope this helps.
@@cinci520 thank u so much
2017 F150 here. They put in a new condenser since it was cracked. Got about a month out of it before it started doing this again. Brought it in to Ford today, they can't figure it out. No error codes coming up.
So i did what you said and it worked out but once the engine reaches the temperature the fan still goes on high and doesn't stop did that happen to you
Yes, but only for a few days, maybe a week. I had to add some coolant after the system had burped itself. How long has yours been doing it? If you start your truck with the air conditioning completely turned off until the truck reaches temperature does it still continue the problem?
Had exactly the same issue, put a oreilly thermostat in and fan stayed on. After evac on ac and switches I put a factory ford in it and it worked. But mine wasn't stuck but ford said the ecm is so sensitive.. IT'S TRUE!!
I'm having the same problem. It takes a little bit of driving around before it kicks on and never shuts off. I'd like to try the AC pressure switch first. Do you have an idea of where to order that part? Thanks.
I had ordered mine off Amazon. Here’s the link mine is from amazon Canada. If you’re elsewhere you can try amazon.com. Likely easiest to get from your nearest automotive parts supplier. Just give them your vehicle’s information and they should get you taken care of.
www.amazon.ca/Universal-Conditioner-SW-10101C-Clutch/dp/B01C4AO6FS/ref=mp_s_a_1_2?dchild=1&keywords=f150+ac+pressure+switch&qid=1620864687&sr=8-2
Good luck!
Bought 2004 Ford 4.6 litre. As soon as I start the truck fan kick in. Tried to unplug high pressure AC sensor. No luck. Should I tried to change the thermostat? I was wondering your fan kick in after sometime or same time once you started the truck? No codes on dash.
Does the fan kick on instantly the second it’s started up until it’s turned off? I’ve heard of the fan clutch being an issue for some. So if the clutch won’t disengage then it’ll always be running. It’s an easy check, if you watch for engagement or disengagement on your fan….also check the ac compressor clutch while you’re looking, and see if they’re functioning normally right at startup before it comes on continuously.
It kicks k in instantly, the second it’s started up so that means it’s not the thermostat. I checked the fan and it spins 2-3 inches by hand. If the clutch is bad i don’t think I can move by hand.
Then I unplugged the AC sensor on high pressure side. Once I pushed the paper pin in sensor connector I can hear the sound of engaging the AC clutch.
Any other options please?
Thank you Cinci 520! Great post and saved me $$$$$
So why did u change the stock one at first
Thanks for that video it help me you are right you have to the ford one in the aftermarket one dint work
Maybe I just got lucky but I fixed the problem with a couple of quarts of Prestone Antifreeze coolant. I have a 2013 F-150. Start making the roaring fan noise last Summer. Put the coolant in the rezervoir and the noise stopped.
The noise started again last week when it got to be about 90 degrees out. Put a couple of quarts in yesterday and drove about 150 miles with a lot of stops in town. No noise. Give this a try. Maybe you will be lucky too.
Just changed my water pump and thermostat on my 2013 5.0. Same issue. My fans turned on after 10 minutes of running. At 70 mph no AC on. outside temp was 71. Fans screamed for the whole 6 hour interstate trip. Just purchased the Motorcraft BR3E-8575 from ford dealer. Remember, just because after market parts say "this part is exact fit" does NOT mean it will work. I had this exact same issue with front rotors replacement from a chain store place. It'll fit but does not have same OEM specs. after market rotors are thinner. Cheaper is NOT cheaper.
Got a question I exchange everything As well my water pump everything thermostat refreshed the coolant. I did put a different thermostat which is from a brand called NAPA for it but ever since I completed the work on it and exchange the hoses no leaks and oil change did complete inspection myself on my truck. Ever since I completed it the fan is just full blast and what you recommend to make it work or best possible solution ?
That is nearly the same as what I went through. I would suggest ordering a new thermostat from your Ford dealership and putting that in instead of the Napa one.
Just let the truck cool down, disconnect the hose on the thermostat housing and catch the coolant in a container. Replace the thermostat and o ring and put the coolant back in. I hope it works for you, and hopefully you can check back in here letting us know. Good luck!
@@cinci520
I have gone to Ford dealership and ordered the thermostat this morning. Because before I fixed it, it was running perfectly fine the fan as well it’ll turn on when I ran out of coolant for short period of times and turn off but when everything changed it’s just full blast. Hopefully it’ll do the trick. Also, wanted to say that as I drove in the highway the engine coolant light goes above the middle average half way to almost 3/4 full as I accelerate do you think that could be it or something else I mean it’s no leak everything is changed and as I drive normally on roads it just remains half way.
The first time I changed the thermostat, to the aftermarket one, my gauge did the same thing where it was going to 3/4. After a few days of driving and opening the fluid bottle cap a few times and watching it bubble that stopped. But I had to take the cap off and run it a bit.
After I changed back to the Ford thermostat though, that never happened and it was perfect. Your experience say identical to mine from start to finish, so hopefully the new thermostat will fix your issue like it did for me.
@@cinci520 Thank you man, you’re the best and really appreciate the help! Let me know if anything as well and will keep in touch !
You’re most welcome, my fingers are crossed it works for you.
Can i order a stock having the same problem
I went through the same thing with my 2015 F150 after replacing the water pump. The OEM thermostat fixed mine. eEerything works like it is supposed to. I've heard that using after market spark plugs wll not fix a misfire too.
Did you put in a diff temp thermo or same temp when it was messing up?
Same temp thermostat, that was my original thought so I called the auto parts place to confirm what temp the replacement stat was.
I'm having the same issue now after I put a new pump and thermostat it runs high smh. Thanks gonna try this now.
I'm having the same problem out of no where. But I just realized my coolant is low and read somewhere where that may be the issue. Fingers crossed.
Thank you,. Had the same issue. I changed out all my High power relay fuses then my a/c blower motor resistor and had not luck with the fans turning off. Now I have another issue my heat and A/C come on on there own along with the fans! I will try the thermostat next. then I give up.
I just had my radiator replaced , the mechanic also replaced the thermostat with an aftermarket (wanted a Ford part but not in stock) , anyway my fan has been running like crazy now for several days ..... ALSO , in the past they had replaced that thermostat , again an aftermarket , and my engine light came on , code said "Thermostat" , I had them put a Ford Thermostat in back then , engine light went off .... I HOPE it is just a thermostat to solve this fan problem , but I will say this , it appears to me my 2010 F-150 4.6 wants ONLY a Ford OEM Thermostat ...... and frankly I am somewhat thinking "only Ford Parts" from now on .... Maybe NAPA , but these little "common auto parts stores" we see everywhere (you know the names) , I am having doubts about their parts .. I have used NAPA parts on a repair or two , and they seem to be doing fine ..... I'm only moderately mechanical savvy , so take what I say with a grain of salt ...... I do firmly believe "FORD OEM THERMOSTAT ONLY" though , going to replace it soon
UPDATE ..... Replaced thermostat with Ford OEM part ...... PROBLEM SOLVED , no more fan going crazy running on high all the time , and it's not even summer yet !!!!! FORD OEM THERMOSTAT , problem solved ..... I'm beginning to think these small box auto stores are just selling the cheapest chinese junk they can get their hands on ...... I've had issues with a few of their parts , like brake discs overheating and warping within a month ..... ridiculous to even sell that kind of JUNK
Imm having the identical issue with the 2013 f150 STX 5.0
Omg.!! Thanks 🙏🏽
I was having the same issue with 2012. Did ur oil gauge marked temperature right out the bat when u turned it on in the morning. Even the other gauges marked low temps, but the oil was kinda odd and the fans started to run like crazy.
Thanks for posting your video. Just changed water pump and thermostat with the same high speed fan issue, and I put an Autozone thermostat in. Will be putting the stock one back in in the morning.
I hope you’re able to get the issue fixed. Good luck!
I sure do appreciate this fella