|
Your car should be fitted with the 92degC. the 87 is for very hot climate and turbo I believe and 82 is for carberettor cars (to prevent pre-ignition etc - old school).
The temp guage is not really a reliable sensing device as they can go wrong (see archives on temp compensation board... should find a lot about loose contacts etc).
Assuming your cooling system works correctly, is clean and thus has sufficient cooling capacity the temperature of the engine outgoing water should be 90-94 deg C subject to load, typically the radiator should give a temp drop over the radiator of 10 deg C. With a clean system and a new good quality termostat, my experience is that everything is just fine, but the guage does not function correctly. There is a testing methode were you put a fixed ohm resistor in place of the sensor which should give a certain gauge reading. I would have to look up the value.
The correct temperature is important as the engine management system is tuned for 92 deg. It does sense the temp and if it is too low it will enrich the mixture, creating higher gas mileage and more wear on the cat etc.
I had a 87degC fitted in my B200F and found it run better with the 92degC, especially more even coasting and better mileage.
It is a common fault, you should be able to find al lot of info on the board to help you out.
Reg,
Jorn 92 240 B200F M47 175kmiles
|
