What to do if your A/C fan is not working
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- Опубліковано 20 лип 2024
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**Want to own the tools I use ?? Click on the amazon link below to get my top 5 Tools I use**
Automotive Test Light- amzn.to/3z1Pdxa
Flexible Backprobe- amzn.to/3Pyr3zO
Multimeter- amzn.to/3PbuT23
OBD Scan Tool- amzn.to/3zaNWnq
Wire Piercing Probe- amzn.to/3OecWhT
Oz your the boss!!
Best mechanic I know in town that won’t cheat you out!!
OZ, you are AWESOME so the other shop just told the customer he need a fuse box with out even checking the system as you did I wonder how they stay in business this way and as always great video thanks for sharing brother.
The bad thing about it is that the other shop probably knew it was the fan and told the customer this to make more money.
Good video, I'm having similar but more complex issues and after replacing the fuse box that a mechanic diagnosed incorrectly I realized there is still no power to my fan relays or fan fuses so I am suspect my ecm is bad. I already replaced the ignition switch because it also stalls out after running fine for about 1 or 2 minutes.
Nice one Oz! The cheap stuff usually doesn't last.
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Don't forget that just because a relay clicks doesn't mean it works. A Dorman part that broke I'm shocked. It did surprise me to see the ACDelco was made in Italy. Thanks for the video.
That is 100% true. Never go off noises. Always verify by doing proper test
I used a 9v then checked for continuity
Awesome diagnosis and fantastic explanation!
Thanks for watching
Thanks Mr Oz, that was short, loud and clear.
Thank you. Have this issue ordered new fan from Rockauto hope its a fix.
@Oz Mechanics Hey i really like your video! I have a 2016 Chevy Sonic, and when i have the ac ir heat on and the blower on full blast, no air comes out of the vents. When i step on the gas, sometimes air comes through but its low. When i park the car for the night and wake up the next day and turn the car on, air comes on full blast like it should but then eventually it gets low, then cuts off completely. I don't know what it could be. Any advice? Thanks in advance!
Hi I love your video, I was just wondering if somebody have the same issue with the fan like me, I’ll turn on but eventually turns off and I don’t know if it’s because the temperature or how usually the fan is working is it always in when you have the car running or it turns off
Oz, great job thanks for directions, Habib Auto from Ghana Accra West Africa
Thanks for watching. Awesome to know I have viewers from Africa
@@OzMechanics hoooo!,yes all your videos in Africa.
Thanks for the video! Is it normal for the cooling fan to turn on and off constantly when the AC is engaged? or could this be a relay issue
good evening my friend. when I open the radiator of the car with a cold engine, after a while the fan also comes on. I have changed the car relays on both the high and low stairs but it does the same thing. you know what could be wrong
I got a 2017 Chevy Malibu; the fan isn’t kicking on either I checked the harness all plugs look good. But I’m not getting resistance when I test the fans.
Great diagnostic video.
GREAT video. Thank you so much!
Thank you for watching
Nice work oz!!👍
Kindly let me know, what is the name of your diagnostic machine
THE BEST DIAGNOSTIC EVER!
THE BEAST DIAGNOSTIC EVER !
Great job 👍
Nice video and very helpful. Do u have details of that test bulb you used to put the load on the circuit. Thanks russell, viewing from qatar
amigo great job. i saw a vid with you and eric . ? so if the fans do work the ac will not work either ?
So for a temporary fix could you just wire it so the high speed is always used. Sure the fan would probably go bad faster , but it's junk anyways.
Oz i know you made this a few years ago.but ive got an old 2002 vw passat 2ltre petrol (one 2 speed electric fan) fan works fast speed direct wired direct to battery but never kicks in with temperature or with Ac on.all cencors relays fuses & resistor pack been replaced. Any help or ideas would be much appreciated.
Great job! Can I ask you for some insight? 13' malibu 2.5l. AC compressor kicks on but blows warm air. Cooling fans don't come on. Are the cooling fans suppose to come on immediately when the AC compressor engages? I replaced relays and both coolant temp sensors (rad+ t-stat). Will test for power to the fans. Question: Will faulty fans cause AC to blow warm?
Good job
Mines does visbersa, no any fan turns on by itself, or by the car commands
But they do with the Snap-on Scanner!
What might it be?
Hey I got a chevy sonic 2014 I need help with the ac
Nice. I have a 2016 Chevy Sonic and having this same issue. But periodically it will kick on and go off. No A/c or heat. I live in WI so if the heater doesn't work when it gets cold that is going to be a really big issue. I need my defroster to work when my windows get all iced up.
Hi mine is also kicks on and off constantly did you find out the reason for that?
@@thefourlaws Honestly, I have no idea. I'm taking it in to get looked at and fixed soon cuz I live in WI and it's gonna get COLD here real soon n I need my defroster to work! I'm hoping it's just a blown fuse for the fan motor or something simple cuz I can still feel heat coming out of my vents but the fan doesn't come on at all anymore to blow the heat out.
Thanks...my issue is that both push (AC) and pull (coolant) fans come on with high coolant temp...however th AC fan doesn't come on with the AC...everything else works.....ant thoughts....thank you
Same here ... Did you had any luck finding solutions
Where’s your shop?
Awesome video🎉
Awesome job compadre. How can we figure out if the fan isn’t working. Most of us don’t have them cool tools that you have.
If you have a wiring diagram you can test you can find out which is powers and grounds. And by turning on the ac ( if the ac system is working properly you. An test to see if it’s working
Hola, tengo una Silverado 2015 , y mi AC le falta enfriamiento debido a ke los fans casi no encienden o encienden muy despacio, y le puse un blower apuntando frente al condenser y el ac empezó a trabajar muy bien, ke me recomiendas?
Ya areglo su problema? Tengo una 2015 con el mismo problema
@@ulisesgutierrez9688yo tambien 2017 tahoe 😢
Well, I learned something new , thanks .. I thought if it works on high, it can't be the fan ? I guess I was wrong again , well the resistor , same difference. I would have missed the resistor till I removed the fan to change , but I think I would have missed the diagnosis altogether, really , so i never would have yried the fan ?
God I have the same problem I replace the fuse box twice thanks man just No high speed fan but when I connect the ground to the relay fan start working never stop with key if you can help please and I’m really sorry if spelled anything wrong thank you guys
Good job well done
Hey there, thanks for the video. My AC works only on highway or after a long hour drive. It turns out that my radiator fan doesn't turn on when I turn on the AC in idle or when I do short drives. At the same time, it turn on whan on long drives. What is the issue with my radiator fan? Why does it only turn on when engine is so hot? Thank you
I have a 2008 dodge caravan. The AC system will trigger the fan to start when the High side refrigerant pressure exceeds 240 psig. Thus, when idling in traffic, when you need AC the most, the cooling fan cycles with refrigerant pressure and engine coolant temperature. Supposed to be an energy conservation measure. Wish I could change it so that the cooling fan runs whenever the compressor is running which I think is the case with most car AC systems. But its in the programming logic...
Hello did you had any luck finding sol to problem .. I am having same problem with my car AC
What a great video from start to finish!! My cooling fan isn't working, and I probably won't be able to run the tests you performed...but the insight to the diagnosis was great to watch!!
I changed my cooling fan with a new ac Delco. Still no luck. I checked all of my relays with the 9v method all works. I checked all of my fuses. Everything is good but still the fan does not spin when I turn on the ac. It blows hot air.
Check high pressure switch, mine turned on when I changed it out and cold air comes
Why don't they design to change the motor instead of the whole fan casing... Just to be more environmental friendly.
It would be nice if you could just purchase the fan resistor and not the whole fan . I’m not sure if that’s offered as replacement part though . This was a excellent diagnostic video I will be subscribing to your channel. Thank you for the video
Fan resistor is probably not sold individually but you can definitely substitute one in if you know the required specs(something that can handle 12v and flows enough current)
@@hhn2002 They do sell just the resistor but I don't remember where I saw it.
Any auto store or Amazon
Just went through this. You cannot buy just the resistor for the sonic, you can find one for the Chevy Cruise but not sonic. I had to buy the entire assembly for the resistor
cant the car run ok with just the fan on high?
Thanks brother good jov
Hello! I have a problem where the clutch engages, but the radiator fan doesn't turn on. However, when I remove the clutch relay, both fans turn on. What could be the issue? There is enough refrigerant in the AC system
Did you find out the issue ...my clutch engages when I turn on AC but fan don't come on... And I recharged the AC system... So it blows cold while I am driving at high speed but stops blowing cold when. I am at idle or stop light ...
Will a bad expansion valve cause radiator fan not to start?
I wouldn’t
Yesterday I had a 2013 sonic here that was blowing a cooing fan fuse. Turns out the low speed fan resistor was fried causing the issue
Hmmmmmmmmm sounds familiar
Common problem with these mickey mouse Chevys🙄
How many fan this car has
Great video. My 2003 Nissan Maxima is doing the same thing. But when I turn on the a/c, it blows hot air only. The blend and mode actuators are working. Did this car blow hot air?
I wish I could bring my car to you! Where are u located?? I have the exact SAME problem, with my 2014 sonic
Im in southeast texas
@@OzMechanics
Houston? You're area code is houston
I'm 8 hours from Houston. I sho want to drive there! It's crazy here, and no one can fix my car, and the ones who can are backed up months
Same car fin come on with ac but not when car get hot pls help
How much do you charge for AC diagnostic test
The oz!
Have a nice day 😊
2014 Chevy Traverse. When I shut off the car, the radiator fans won’t turn OFF for sometimes 5 minutes or so. Maybe fuse? Anyone have anything in this? Been looking up things. Thanks
I buy a lot of stuff from dorman never had problems nothing lasts forever😊
You da’MAN!
Thanks for watching
What if your car doesn’t have a resistor
My car chervloet sonic 2012 starting problems
Common problem on these😯
Excuse me, What's wrong with the fan?
Thankyouthankyouthankyou!! You helped me diagnose my faulty fan resistor - I shorted pins 86 on high/low relays together and thank God my fan runs when engine is hot🙏 (albeit at full speed until I put in a new resistor)
👍👍
Does the fan just turn on with the ac on or it also turns on without the ac on
Is that why the ac wasn't blowing cold?
Hey True Saiyan whenever the fan is not working you will notice the ac only working while driving higher speeds. It’s because the condenser is getting cooled down by ram air. Hope this helps
@@OzMechanics Oz Mechanics, it does thank you. I will be doing the some trouble shooting tomorrow morning. I replaced the pressure sensor, condenser and the expansion valve. But didn't fix the problem The ac would turn on every 10 min. But friday i went on a long drive on the freeway and it was working just fine but later in the day it stopped working entirely. Now it wont even turn on even on its tem minute interval.
Have an issue with my Malibu
👍👍🌷🌷🌷
Please test your cooling fan resistor before spending hundreds on a genuine full fan assembly.
How can I test the fan resistor?