BlindBatForumFailer

I tried cleaning the contacts on the blue connector, no help. The fan works, it goes on sometimes, just not when my AC wants to shut itself off. Any suggestions???

kday

This is a schematic for a radiator fan override switch that I made when I was troubleshooting my fan problem:
<img src="http://pictureposter.audiworld.com/66084/radfanov3.jpg">

The two relays are under the hood. The added switch is in parallel with the radiator temperature switch on the left lower corner of the radiator. The pins are right for my 94, your car may be different. For your purposes the LEDs aren't needed. You could just ground the pins on the radiator temperature switch to the same effect.

This would let you isolate whether the problem is truly AC related, or if it's the resistor pack and/or other fan wiring.

I don't recall how the AC system turns the fan on.

katit

Mine was fried inside one half.

Do this:
In a relay box - remove one of a relays that control fan (bigger or smaller - doesn't matter)

Looking from a side - short left and right terminals. Fan should spin. Try that couple times or short it and then try to shake that blue connector. If works - then you need to test A/C high pressure switch.

Do you have Bentley?

BlindBatForumFailer

and where is the relay box? Sorry for the dumb question...

katit

on a left side. Right next to windshield.

Open it - read sticker. It's one of the 2 first relays in a middle on a left.

Ether one would be fine for test. Basically, this is easy way to turn on fan without starting car.