My temperature gauge will go past the 3/4 mark and even further if I let the e30 M3 idle for a long period. I have read that the auxillary fan is suppose to start up at some point (3/4 level). Is this true? Also, just to make sure, the auxillary fan is the fan in front (not behind) the radiator? If the auxillary fan does not come on when temperature gets to a certain level but works when AC is put on, where would the problem be? If it is the auxillary fan relay then where is that located? I have checked the fuses and they are all working. If the auxillary relay is the small box attached to the cover for the auxillary fan then do you have to splice wires when you replace it?
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