BMW Overheating? Check this first!
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- Опубліковано 29 вер 2024
- BMW's have a bad reputation for overheating, the water pump, thermostat and viscous fan usually get the blame - but check between your fans first. I have seen over-heating caused by lack of airflow a few times now and it is very easy to confuse a lack of airflow with a failing viscous coupling.
Although I show the clearing procedure on a BMW E31 840ci 8-Series this procedure is prescient for all the BMW models including the E32, E38 and E39 - even later models such as the E63/E64 can have the same problem.
More details on working on the BMW V8's: www.meeknet.co...
Timm's store: www.amazon.co....
#BMWOverheating #BMW #Overheating #Fix
Another excellent video. Thank you.
I drive BMW cars more than 10 years. Always fill distilled water %50-50 and blue BMW recommend antifreeze . Also I clean radiators with soapy water every 2000-3000 km. Vaseline all hoses and check them every 6 months. I have never have problem about overheating. Also I have spare parts at the garage ready to change :)
Thanks Ali!
this was the culprit for my weird overheating issues 2006 525i n52
Thanks for letting us know!
My engine maintains temp at 110 degrees when it should maintaining about 100. The hood gets hott you can’t keep your hand on it for more than 5 seconds. No coolant seems to be leaking, water pump is fully working. 2011 328i x drive
The temperature measuring point is at the engine coolant output whereas the thermostat is at the engine coolant input - so it is normal to see higher temperatures than the thermostat rating. All sounds normal to me!
Sorry to be a pain in the bum but can you do a similar video on your E64
Will do Alex!
Hi Tim, i own a 1 series bmw e87, somehow when idling the car, somewhat like 10 minutes the Outside display temp rises little by little. Do you know why this happens?
Don't worry, that is perfectly normal, the engine heat wafts up onto the ambient sensor
is normal the vent not spining when not drving i think my one is overheating not sure the issue
The viscous-coupled fan does not normally run at high speed when driving - only when idling
Hi sir, my bmw46 318i, when I accelerate it and go at speed in a few minutes the water heats up, some time ago I also changed the hoses because of this. but why he s heating when i go fast speed ?
Overheating when at speed points towards a water-pump falling apart....
Hi there i have just done a M43-B19to M52-B28 engine swap in my 316i and soon as i start it up the temp gauge skyrockets , i have changed the temp sensor but still happening . Anyone know what the problem is ? Thanks in advance .
The usual problem is getting the temperature sensor and the heated thermostat connections muddled up!
I wouldn’t know, my e90 doesn’t have a temp gauge
Although you can get the coolant temperature displayed using the hidden menu system, or code the cluster to show it - it's a bit of a faff - and is something I certainly miss.
@@TimmsBMWRepairsandInformation what is a faff?
My 2013 BMW 740Li lately has been having a "Engine Overheated" on the dashboard but my mechanic could not find the cause of the issue after manually checking the Coolant, radiator, thermostat, water pump and the radiator fan. the computer diagnostic also did not show any codes or warning. Prior to the engine overheated popping up, I can hear the fan starting to over work, if that's any indication. Once I pull over and let the car cool for 10-15 minutes, it will drive for a couple of days without any issue but eventually it happens. Any ideas?
I’m in the Same boat ,did u figure it out mate?
same here. did u fix the problem?
@@robertoalejandro4656 Yes. Changed the water pump.
@@ggrome7714 Yes. Changed the water pump.
Running hit , no leaks from what I can see. Imma so grained guess I'll get a mechanic this go round
This video is a lil old but I need some help. Just replaced several hoses and belts and expansion tank on daughter's car. I can let it idle for 15-20 mins and drive it a few miles and does not over heat. I turn car off for a few minutes and drive it, it over heats...any clue what may be the issue?
Go through the bleeding process with the nose up
Tim, you are a life saver. I have a 1991 850i where the auxiliary fan is cutting on and off. I live in Atlanta, GA, a hot place so I need my AC to work properly. So, via input from my BMW mechanic and various forums, I have decided to replace the auxiliary fan. I used your step-by-step instructions on meeknet to remove my old fan. Thanks so much.
The one thing that was really a pain was getting to the bottom bolt that was holding the fan. I could barely get a wrench on it. It probably took me 1/2 hour to get it off. Just curious, any advice on how to access this bolt to make that a little easier? Use a longer wrench, take off the bottom trim on the car, or ?
My new fan arrives today so I'll be doing this project the next several days. Thanks so much for your help!!!
I oiled the rubber grommet and pushed it into place!
Watched this for GP before changing mine because Timm is the man with the correct info as opposed to many utubbers that have no clue.
I'd like to see Qsilver make some vids as well. :)
BTW I overheated at 3:30am in the middle of nowhere at -9°F(-22.7°C). Scary stumble home.
Thanks Noan! Don't want any more competition!
Hi Timm, hope you doing well, I don't now if you remember that i ask you about a relay and fuse that i change ,anyway still don't working at all , in your opinion , what i am doing wrong ??
In the other hand, have you ever serviced/cleaning the throttle of the E31 ?? If so , where is located ? unfortunelly for the second time i got a message that the transmission is fault !
thank you and happy summer in the UK...good memories !!
Yes I do, it is much better to move this over to bimmerforums.com as there is little room to answer here
Hey so I do have a question I have a 2006 bmw 530i and when I cut the engine on and I'm idle I hear a rattle from the front of the car and eventually it tells me it's overheating and it's leaking from underneath as well. What do you think this would be exactly?
That sounds like the waterpump has a failed bearing and seal - quite often happens!
Hi Tim , I have a 2007 BMW e90 323i and it was overheating , I replaced radiator cap as it was breaking and a new thermostat as the previous one wasn't opening up. And it's still overheating , any tips on what to do next ? There's no leaking and I'm sure water pump is still okay but not sure. Thanks
Have a watch of this for some help: ua-cam.com/video/XGIk8IXSGIE/v-deo.html
My 2006 650i auxiliary fan not switching on as required so overheating on idle or dense traffic !
I ordered new switch but noticed after arriving home from 10 mile trip I got out of car but decided to move it about a foot and when I started the car the fan came on and then went off again after a minute maybe reached lower tempature. Or should I be looking at relay switch 🤔
Which is somewhere under a wheel arch I believe.?
Do you have a video?
I love your e64 you are one of the reasons I have 0ne !!!
Hello Arthur, what makes you think the car is overheating? There is no temperature gauge - are you getting steam or something else?
Not used to bmw’s never owned one before. Found myself buying an e36 ( 328i ) today, has slight overheating issues when applying throttle from a stop.
All you need to know here (for V8 but is the same for all models): ua-cam.com/video/XGIk8IXSGIE/v-deo.html
Hey Timm, USA here was wondering if you have had this happen on your journey through BMW land? I am losing coolant. My 94 -525 came with a rebuilt transmission $2000, new radiator $900 and new shocks which can be very expensive on that car.
I did the rest of this work myself. New brakes and rotors, tune up, lower control arms, fan clutch, water pump, thermostat with new metal housing
tightened down the head, battery. It runs smooth as silk and handles like nothing else but it uses coolant???????????? No visible leaks or steam out the exhaust pipe. I ordered a new radiator cap just for the fun of it. I have tried to look under the air intake manifold but no visible leaks but hard to see under there. Might have to take that off next spring because it's getting cold up here in Vermont. I'm thinking head gasket but my compression test seemed good. Problem is I spend more time under the hood than driving this........ I'm actually starting to look a Lexus'. Help.
Someone in the UK had the same problem - the solution follows: Just to wind up the post with the solution to the issue. It was indeed the coolant hose running along the length of the front of engine directly under the manifold. As per the video shown earlier in the post. Most awkward part to get to, and was way beyond my level of DIY. The garage had to remove the manifold the leak was directly at the connection to the engine weak O ring and brittle connection on the plastic hose. There was also an attached hose which showed sign of wear and was also replaced. Along with that I asked the mechanic to check to see if anything else looked a bit dodgy and to replace where he saw fit. Crack case breather hose was replaced, along with 4 or 5 additional connected pipes and hoses. All parts came from BMW directly were approx. £100 The rest was labour.
Hi Timm great videos as always. I followed your auxiliary fan clean and change procedure but when I pit thw ac on full with or without the engine running, the fan does not run. I even put a multi meter on the 3 pin connector and there is no voltage on any of the 3 pins. Any pointers or tips would be very welcome.
Or is it a case of the of it will only run when the engine is upto temperature?
Hello Lloyd, it depends on a number of things. First, if your car is post facelift - then it will only run when it needs to, even if the A/Cis running. If it is pre-facelift then the A/C must be ON and you must have refrigerant pressure
Hi Tim, can you please help me where is the Temperature sensor on the e31, I am absolutely in the limbo, seems like know one knows where is located ( mechanics ) thank you for your response. Mario
Hello Mario, it all depends which engine you have, the M62 840ci has the temperature sensor on the waterpump/thermostat housing. The M70 and the M60 V8 has the sensor on the coolant accumulator right at the back of the engine: www.realoem.com/bmw/enUS/showparts?id=EF63-USA-02-1994-E31-BMW-840i&diagId=11_4845
I truly appreciate your help and support and I am sorry about the don't give you the engine, is the m60 ,1995 840ci...
Thank you again
Hi Tim, great info as always. I am using the furlough leave to kickstart my 840 restoration project which completely stalled exactly a year ago when I became ill. Fortunately, I am more or less out the other side so am trying to get on with it. Point being, I am so grateful to you because I can refer to a lot of your images on Meeknet as I cannot remember where some of the bits go! Keep well mate.
Glad you are getting better - and glad to be of some help!
Nice speakers in the background
wharfedale
Wharfedale Linton's - they cost me £2 at a car-boot sale. At the same time I bought a direct-drive crystal-controlled turntable for another two quid!
You are very knowledgeable and helpful.Thank you sir.
Thanks, that's very kind of you!
Great stuff,I never knew about the Chrome Kidney option ! I was wondering about them…cheers Timm (Joel Chester)…
2006 330xi runs hot only after I shut the car off. I can drive 8t all day and all night non stop and no problems. But say I run in a store and stay 10 minutes and start the car back up and within 30 seconds or half a block my yellow & then red warnings light up and I pull over and have to wait at least 20 minutes before I can drive again..This doesn't happen every now and again it happens every time so a lot of times I just leave the car running during Drs appointment or at stores . Need help on WHY ?
I can run it 24 hrs straight and everything is fine. But 8 can shut it off for 15-20 mins and by the time I get 3 blocks my yellow warning shows for just a second and immediately goes to red . Even with it being 100 degrees outside the past 2 weeks with me running Max A/C wide open not a single thing shows up .. But it's Amazing to start it back up and as quick as it goes into the red . Just can't figure it out .
Great advice Timm.....I had to have the valley pan gasket on my 840ci replaced as it was leaking coolant. After BMW did that, it blew the radiator apart on the drive home! The dealership also wanted me to replace the magnesium valve covers because they warp and can't be machined as magnesium is flammable. I was told it is an "unacknowledged defect". At $2000 for the pair, I declined and they've been fine with new gaskets.
Good call - I've had seven BMW V8's and never had a problem with warping valve covers! Neither has it ever been a subject on all the major forums - so I think we can put that one in the 'made up' catagory!
👍
Hi sir I like your video very helpful
Is difference between 2001 and 2004 transmission
Great video Tim. God bless you and your family.
Thanks, and bless you too!
Please help me to fix my car
Good day mate. I had the issue of overheating warning message on idrive. (Bmw e60 2006 n52 525i). I check it out the coolant level.. was good. Then I check the water pump without starting the car (just on ignition), I see the flow was good and water pump is working.. I didn’t drive for couple of days.. feel curious.. then I check under the hood for a leak from thermostat.. no leak.. then I start the car with coolant cap open to check if the coolant (actually I’m using mineral water as coolant) flowing through engine and back to coolant tank ( through small hole in coolant tank).. it’s flowing.. I let the engine run almost an hour and check the temp (on dash) show around 90~94c without running ac and with ac on, temp around 88~93c. And the radiator fan works on/off when ac is off and consistently running with various speed when ac is on.. then later on, I did drive about 1/2 hour in town.. no warning msg and the temp was good.. what could the problem on the day that it shows the overheating warning.. your opinion/comment please. And by the way, on that day, the weather was too hot (36~37c) and i was driving around the city with short distance trip and also the ac was medium level..
You need BMW coolant! Our engines run well over the boiling point of water (up to 120C) - without coolant your engine is being severely damaged!
Timm's BMW Repairs and Information. Well, I need to flush all the fluid (mineral water) and fill with bmw coolant.. right? And please tell me what mix ratio of water (preferably distilled water) and coolant as I’m from a hot weather country.. average of 33~38 degree Celsius. Thanks a lot mate..
All explained here: ua-cam.com/video/-Lb68GdQDXk/v-deo.html
750 1997. Is it normal for the AUX fan to cycle ON and OFF when A/C is ON? I just refilled the AC system, blows really cool air now. New AUX fan. The fan starts spinning high rpm when push AC button but the fan cycles on and off. Don't know if that's normal or not..
Yes, you should notice the compressor switching ON and OFF as well
@@TimmsBMWRepairsandInformation so it's normal for the fan to cycle for lets say 10-15sec then off for a couple of sec then ON again? Sorry for repeating myself, just want to be sure 😄
@@estranged85 The compressor and aux fan will run until the evaporator is down to temperature - both will then cycle off. When the evaporator warms back up again they will both cycle back on. The amount of time off and on is dependant on the ambient temperature, the requested interior temperature and the fan speed.
@@TimmsBMWRepairsandInformation thanks for the info! Great channel btw 🙂
Hi tim. Just had water pump, thermostat and battery replaced but still having overheating message on a f10. Any pointers will be appreciated
Hello Sean, next thing to check is if the coolant is circulating - best place to check is the lower hose from the radiator. Also, make sure it IS overheating rather than a false error. Have a watch of this to understand how the system should be working: ua-cam.com/video/XGIk8IXSGIE/v-deo.html
@@TimmsBMWRepairsandInformation much appreciated brother. Will keep you up to date
@@seandixon6856 Hi Sean - any update on this? Curious as my F10 is also overheating, I am in the middle of replacing the water pump and thermostat so crossing my fingers but still interested in your outcome.
@@seandixon6856 what happened bru
Hi Timm, I have an e63 and after bmw changed the coolant thermostat, the engine once warmed up the oil temp now runs at 110c instead of the previous constant temp of 100c, any ideas bmw dealers just give me waffle any ideas? Much appreciated for any advice.
110C seems a little hot to me, check that you are getting airflow through the oil radiator: www.realoem.com/bmw/enUS/showparts?id=EK13-USA-04-2007-E64-BMW-650i&diagId=17_0364 They do get blocked up.....
@@TimmsBMWRepairsandInformation thanks Timm, it's all clear, I suspect it's something those idiots at the bmw garage have done, maybe the thermostat they replaced was not the same spec? Or the water pump may be on it's way out, looking into the expansion tank the flow is really weak then it stops after about a minute (while the engine is running from cold) cant seem to do the electronic bleed after holding the accelerator down for 10 seconds, thank again for your reply, I have got it booked into the garage for them to change the water pump, it's never been changed after 98k, thanks again my friend.
I have a new water pump on my 328i 2010 and It was good until I had a coolant leak and threw in a "stop leak" and filled it up with coolant and overheated even tho I bleeded it
If you lose coolant pressure the coolant will boil as the coolant temperature exceeds the boiling point - it is only kept a liquid by the build-up of coolant pressure - if you have a leak you are on a hiding to nothing!
I'm Having The Same Problem Rn Bro Did You Find Out What It Was? Mines Leaking Blue coolant & It Overheats When I Accelerate ...Thanks Fam
@Timm's BMW Repairs and Information what does that mean should I worry?
⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐
Thanks!
i have a Bmw E90 with n46 motor, it stops after 15 minutes when is hot outside, it don’t stops when im driving, just when im
waiting at red light
Update?
What was wrong with it
I just love the way you Brits always say 'hoover it out'. Lol
Definitely check for tools before closing the bonnet. I bent one once by not doing so. Idiot! Me that is. Good info. Don't have to worry about leaves here in Vegas, just really high ambient temps.
Good video as usual Timm.
Thanks Werner, I dented a bonnet once - never again!
@@TimmsBMWRepairsandInformation OH, that's not the worst one. I took my 1998 S90 Volvo to a place once for an oil change and I showed the guy how to get the bonnet up in the service position. It had catches on the struts to hold it up. I didn't watch him all the time and so he drove the car out when he finished. I got in and drove home but noticed the hood was not down right. I stopped to try to close it and could not open it. It was completely jammed. I figured out he had slammed the hood down before releasing those catches. I went back the next day and showed it to the owner. They had a hard time prying it open and somewhat straightening it but it was just never right after that. Poor old Volvo had a hard life. Good drive train though.
Can oil overfilling cause the engine to overheat?
No, the engine self-detonates if it really is overfilled!
Mine is having both thermostat and coolant temperature sensor issues....how do I know which is the bad one? I don't want to buy both...the engine is running cold... constantly. The heat does work most of the time...
Start with the thermostat William, the sensor will not affect the cabin heater
@@TimmsBMWRepairsandInformation the heat is working actually...but the gauge won't budge from the blue
I'm planning to get the coolant temperature sensor and thermostat Friday... hopefully that solves it....it's not good to not know if the temperature gauge is actually hot and reading cold. But my BMW has a warning light that would come on if it was truly overheating
Car shakes some at startup....some rough idle....I did make sure the oil and cylinder heads were not milky looking
@@TimmsBMWRepairsandInformation we did change the spark plugs....wires.. ignition coils and boots ...and it did bump the idle up some
What about 750 li 2006
Yes, the same for that as well.
so easy to get to the resistor pack very nice the e38 well.....
Thanks! Still blooming awkward to get the auxiliary fan in and out though!
@@TimmsBMWRepairsandInformation thanks for sharing the tech info on your channel videos nice for reference material.
Thank you for the Car knowledge I can listen to your accent over and over again lol
Any time!
a trick: you can watch movies at Flixzone. I've been using it for watching lots of of movies recently.
@Jackson Draven Yea, have been watching on Flixzone for months myself =)
@Jackson Draven definitely, been watching on flixzone for months myself =)
@Jackson Draven Definitely, I have been using flixzone for months myself :)
Great video Timm. Have you worked on a BMW where the A/C blows weak then after a few minutes blows blows higher? What do you suggest I check? Thank you much.
That's normal operation on many models - the vents are closed until the matrix temperature is at the desired level
@@TimmsBMWRepairsandInformation Thanks again.