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ac fan will not come on 200 1991

posted by  flip2122 on  Sat Jun 30 13:39 CST 2007
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last visit: Sat Jul 28 16:01 CST 2007
[RELATED]

Before you replace any parts, realize that the fan only comes on when the pressure on the high side hits a certain point, not when the compressor switch is on (like many other vehicles).

On my '91 I was concerned that the fan was not working so I taped a thin strip of tissue paper to a fan blade and the bracket so I could tell if it activated. The fan did not come on until temps were in the 90's and I had been in stop and go traffic for 30 minutes. Since then I have heard it cycle occasionally, but only on high temp, high humidity days or after extended use.

It shouldn't be to much of a job to wire the fan to run when the compressor is turned on, but I don't think it is necessary as long as your temps (both A/C and coolant) are OK. A clean condenser and radiator along with a functioning fan clutch are much more important than the aux. fan in my experience.

-Sean
--
1991 244 218,000+ mi.






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