PeachParts Mercedes-Benz Forum - View Single Post

JamesDean · #2 05-25-2012, 07:20 AM

Are you talking about a 190E 2.3? or 2.5?

Are you talking about the fan on the inside of the engine bay attached to the engine? Or is it mounted on the outside of the engine bay on the radiator/ac condenser?

There are many model and each will have a different style of fan.

If you've got the 2.3, the engine side fan, then you've got a magnetic clutch style fan. The fan should kick on at a certain engine temperature. You should be able to trip the sensor to test and see if it works. I'm not certain of the sensor location so someone else will have to chime in. If that fan is not working then that might be a cause of part or all of your problem.

If you've got the 2.5 diesel, the engine side fan has a liquid clutch that will engage when it reaches a certain temperature.

The outside fans mounted to the a/c condenser have a dual purpose. They have a low speed that kicks on when the a/c system reaches a certain pressure and they have a high speed that kicks on engine the cooling system reaches a certain temperature (115-120C I believe)

Normal operating temp is just at 80C for these cars.

Either its your radiator clutch fan, radiator itself, or possibly the water pump.

Whats the engine normal operating temp?
Whats the engine temp at speed/on the freeway? with the ac on?