Our e32 has started to overheat. It has not overheated in the past. After about 10 minutes at idle, it's maxed out. Driving doesn't make it any worse, or better.
There is plenty of coolant. We put a new thermostat in when we changed the belts & seals. Is it possible that the thermostat is bad? Opening the bleed screw does not release air.
Is there a way to test, on the car, the thermostat? In our subaru it's possible to remove the cap, start the car, and watch the coolant be moved. In the bmw -- this doesn't seem possible.
Also; the fan clutch looks newer (ie: replaced) but still free-spun once the car overheated. Could this cause the car to overheat this quickly?
Lastly; the car is "chipped" -- Could this possibly cause the car to overheat? I can't see how this is possible; but that's the only non-standard thing I can think of.
Thanks
-josh
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