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Low speed Aux fan not working


Tampa 735il
10-15-2010, 06:45 AM
88 735il

No fan operation at what point on the gauge does the hi spped fan cut on?
No fan operation with compresor on.

I have checked the fan works bypassed: Replaced the fan sensor and temp-2 sensor, coolent sensor works.
I have checked both relays hi and low both have voltage and fuses are good. It seems like the resistor maybe the issue I will check that today.

I never let the car heat up over 1/2 way which maybe why the hi speed fan does not come on unless bypassed.

Does anyone know what value resistor is?

Tampa 735il
10-15-2010, 05:10 PM
Resistor is bad it's open!

lincolnmaster80
10-17-2010, 01:59 AM
I was just going to say, sounds like a resistor failure...but you've already figured that out. :)

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