Cooling Fan Viscous Coupling

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Author Message   Jim Macklow (Macklow) New Member Username: Macklow Post Number: 1 Registered: 03-2003 Posted on Thursday, June 05, 2003 - 09:22 pm:    How difficult is it to turn the viscous coupling when hot? I've been driving around in 100 degree (F) weather here in Las Vegas, and my temperature gage never goes above the mid-mark. However my fan is as easy to spin cold as when the engine is hot. That is, when I push on it I can rotate the fan, but there's too much friction for it to free-whweel. Is my coupling shot, or perhaps my engine never gets hot enough? I did replace the thermostat a few months ago (old one was stuck open). This is on a 1995 Disco with 138,000 miles.   JPinson (Jeffro0502) Member Username: Jeffro0502 Post Number: 51 Registered: 02-2003 Posted on Thursday, June 05, 2003 - 09:36 pm:    I'd say if you run it at idle after a while you will hear your fan come on....i mean engage, and you start to hear a low roar. Also on start you should most of the time hear a roar for a bit and then it will go away since your engine is cold. Also my temp gauge on my 96 never goes above the 3 quarter mark.