Question about 1997 BMW 318

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Bmw 316i overheating

We removed thermostat completely as it was getting stuck from the bmw that has cooling problems, changed radiatior, water pump and checked heads

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  • Anonymous Mar 19, 2014

    bmw overheating i have a 316 e30 box shape i have changed the thermostat , water pump and new radiator as well but it still heating up

  • Anonymous Mar 25, 2014

    for 1997 bmw 316i coupe

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Also check the radiator cap. If the spring in the radiator cap is worn, it is not pressurizing the cooling system properly and therefore it will cause the vehicle to overheat. This is often overlooked and is a cheap repair. Every additional pound above atmospheric pressure that the cooling system is under causes the boiling point of the coolant in the system to raise 3 degrees F if memory serves me correctly. So, if the cap is old it will boil at 212 instead of 230 (for example)-and cause the system to overheat--even though everything else in the system is new/operating perfectly. If this is not your problem you may want to check to see if the cooling system itself is, indeed, holding pressure. You can get a gadget that fits on your radiator from any auto parts store to pressurize the system--after you pressurize it...leave it alone for about 20 minutes and see if it maintains pressure. If it doesnt, you have a leak somewhere. Hooah.

Posted on Dec 20, 2008

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I am having overheating problems with my BMW 316i...The heating in the car has now been working for some time now but about 4 days ago...the car started to overheat...within minutes of starting the car from cold...the temp gauge shoots up to half way and within 7-10 mins its in the red....What could it be???

Posted on Feb 02, 2010

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You need to bleed the system properly, it may be best to take it to a dealer to do as it is quite a process to get all the air out. even when you think you got it right you prob havent. normally takes me anywhere from 15mins to 1 hour to get right.

Posted on Aug 22, 2008

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What if i change the radiator and fuel pump ??

Posted on May 29, 2014

Thank

Posted on Aug 23, 2008

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stanley141
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SOURCE: bmw 316i overheating

check if the water is circulating as you might have a blockage in the header tank. this can be checked by opening the radiator cap and check if the water is circulating on top.

Posted on Jul 28, 2009

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Some BMW, Volkswagen and Audi cars have a common problem that the water pump impeller becomes dislodged from the input shaft of the water pump leaving the water pump looking ok from the outside, but failed on the inside. If your car experiences this problem it will over heat rapidly much like a thermostat failure. For exact specific repair procedures for this repair visit our online repair manual page.




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yes, if the water pump is bad, input hose will be hot output hose will be cool, but that also could mean a bad thermostat.

a way to see if the water pump is pumping coolant is to remove the bleed screw on the thermostat housing and see if coolant spews out.

But it overheats. may as well change out the water pump and get rid of the original plastic impellers. While you're there, replace the thermostat with a 12 degree cooler one and drill 2 3/16" holes 180 degrees from each other in the thermostat.

2.8L motors are sensitive to overheating. you can bust a head gasket this way in no time. Also warp that long cylinder head.

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don't get one of those cheap *** plastic impeller water pump for sissies. Get the metal impeller one. get a cool running thermostat and drill two 3/16" holes in it 180 degreess from each other. you may have installed the t-stat backwards.

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I am having overheating problems with my BMW 316i...The heating in the car has now been working for some time now but about 4 days ago...the car started to overheat...within minutes of starting the car...


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check if the water is circulating as you might have a blockage in the header tank. this can be checked by opening the radiator cap and check if the water is circulating on top.

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You actually need the thermostat in to pressurize your cooling system or the coolant won't cyle through the radiator, it'll just cycle around the engine. Most people think without the thermostat in the coolant will just pump freely through the engine and radiator, but it doesn't.

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