e36 318 8v auto, over heating, any help?

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tomislav
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Post Tue Mar 13, 2012 11:02 pm

Hey people.

E36 318i (8v) auto compact on a W reg.

Overheating when in traffic. Fan not cutting in, but also, the fan wont cut in when the air con is turned on which i thought it should.

Can anyone advise whether this is a correct assumption and also, are there any fan control units to worry about complicating things?

Any advise greatfully recieved

Tom
'Assumption is the mother of all f**k ups'
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Billwill
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Post Wed Mar 14, 2012 8:11 am

Have you checked the fuses?

Fan should come on when the air con is turned on and there is normaly a two part temp sensor on the radiator that comes in at 92 degrees C to run the fans at low speed and then a second part of the sensor comes in at 99 degrees C to drive the fan at high speed.

I have a circuit diagram somewhere...I shall have to work out how to attach it here! :?