On top of the engine, next to the valve cover should be a sensor with one prong sticking out of it with a plug on it. If you unplug it while the engine is running, and short the plug end to ground, the fan should click in and start turning with the engine.
In my car, its the third sensor back, the front being one with two prongs, the middle has one prong but if I unplug it the engine slows down and almost dies, and the third one is the fan sensor - no effect on the engine when unplugged.
Try to short the wire to ground, if the fan runs, then its the sensor, otherwise trace the wire and see if that is the problem or the fan clutch itself.
Hope this helps.
-=>Raja.
Quote:
Originally posted by haasman
Chris
Can you hear the clutch work when you supply 12v? I just had to replace the three-pole switch on the 190. I was told they often get higher and higher resistance over time.
Haasman
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