1994 C Class 1.8 Espirit

[ericdanquah]

Hi Guys I Have Problem With My W202 1.8 When Ur Doing Say 20 Plus The Engine Temperature Is Stable But When The Car Becomes Idle And The Engine Is Running The Temperature Start To Rise To The Red Mark But As Soon As You Start To Drive It The Temps Comes Normal. Is Any One There Who Knows What Is Happening.
Moreover Sometimes When The Car Is On The Run And The Speed Drops Down Below 20 The Engine Dies Unless I Start It Again.
Any One There To Help Me ??????????????????????????????/

 

[Blobcat]

Is your fan working? if not as you drive the air flow through the rad is enough to cool the car but when you stop with no air flowing the car overheats.

 

[ericdanquah]

Fan Turns

YEAH THE FAN IS RUNNING ALRIGHT THOUGH , YOU KNOW SOME CARS WHEN YOU STOP AND TURN THE IGNITION OFF U CAN HEAR THE FAN STILL RUNNING BUT THIS DONT DO THAT.
ANYWAY WHEN U START THE ENGINE ONE CAN SEE THE FAN TURNING

 

[Blobcat]

I don't know if your fan is viscous coupled, but since you say it turns when you start the engine it sounds like it is. However the viscous coupling may have failed, the fan is just turning round and not drawing air through the radiator. Malcolm (TV) has posted a number of replies to this and has suggested the 'carrot' test for a viscous fan. Get the car up to temperature +85' the fan should running and be able to slice a carrot in half. Just be really careful when you try this.
Here is one thread;
http://forums.mercedesclub.org.uk/showthread.php?t=17830&highlight=carrot