Quote:
Originally Posted by A930Rocket
After starting it, the fan was very loud, and I assumed the clutch was shot. Looking at it more, I realize it has couple of wires going to it that engage the fan clutch. I’m not sure what sensor tells it to turn on, though.
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There should be a thermo switch in the coolant loop somewhere. That's the way it used to be when things were easy. Maybe the ECU or the specific controller or whatever also uses the head temp sender if it has one. Maybe if there is a discrepancy in sensors, the fan is told to run all the time for safety.
Yeah if you unplug the clutch it should idle quietly. Sounds like bearings or clutch not dis-engaging. Whack it with a hammer
Has the belt hardened up and gotten tight?
IDK the electronics these days. Check with the Ford forums which would probably know.