Quote:
Originally Posted by reinvent
I dont think there is anything wrong with your original fan clutch. They start off very stiff until the oil warms up from the fan rotating. They are on all the time as far as I know. If you drive around for awhile, your fan has more free spin. (when engine turned off). The fan clutch has a bimetal strip on the front which causes the fan to get tighter as temperature goes up but i think this only happens when hood down and temperature quite high.
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The fan clutch is more loose when it's cold, and gets tighter as the vehicle heats up. The inside is filled with hydraulic oil that expands when it heats, pushing the clutch together. It should still have good resistance when it's cold, if not there's likely no hydraulic oil in the clutch anymore. That's wierd that changing the fan clutch made the noise go away.