Engine/Transmission (1998.5 - 2002) Cooling fan clutch

[Ragain]

How much "spin" should a cooling fan clutch have @ cool/cold engine temps? The service manual suggests replacement if the fan freewheels 3 revolutions when spun by hand. Nothing is mentioned about minimal spin. My fan may only freewheel 1/8th of a revolution. Is this too tight? Seems this may be pulling alot of air when temps outside have been so cold lately. Also... A few years back I saw an aftermarket fan clutch that can be manually operated via an electric clutch. This would be great for "precooling" the coolant in the radiator just before a long pull on a mountain grade, and could allow the fan to freewheel when its cold and idling. Any info would be appreciated!

 

[BILLVO]

Sounds about right. But cold temp test is not as critical as warm if it free wheels after shutdown while it is at full operating temps,its a dead one. The best indicator is to look at the center section and see if any oil is leaking out and collecting dirt then it is starting to die.