How does a 1991 crown Victoria 5.0 v8 engine fan clutch work?
As any fan clutch works, it is by the amount of heat. When the
engine is cool or below its temp. the clutch will free wheel, in
other words it will turn slowly with little force. As the engine
heats so will the water temp. then the clutch will pick up the heat
and start to engage. Which will start to turn the fan faster to
cool. If in the event the clutch stays on in full force all the
time, then it has to be replaced.