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Questions & Answers
Why is my car overheating?
You might have a clogged radiator. If so replace the radiator. I would first replace the thermostat as it might be bad. When they go bad they usually stay stuck in the closed position. When closed there is no flow of water to or from the radiator. You can check the thermostat by removing it, it is located on your upper radiator hose, the return hose. To check it boil a pan of water and and using a pair of pliers hold the thermostat in the hot water. If the thermostat is bad it will not open. Hope this helps.
My engine malfunction light has come on and I am losing revs in all gears
Could be a lot of things...but a common problem with the m series is the "cyclone valve", BMW' s fancy name for pcv valve. If you live anywhere it gets cold, they tend to freeze up and crack the diaphragm inside the valve. Of course they wear out as well. A symptom of this condition can be white smoke coming out of the exhaust, indicating fuel still being unburnt. You can also buy a winter package that consists of insulating wrap, tye straps and a bunch of other useful stuff.
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