Thermal fan clutch operation - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jim_PA · 11-01-2009, 04:06 PM

I was breaking in a new cam today, and at start-up, of course the fan was locked for the first 20-30 seconds. It disengaged, and stayed that way... Engine temps crawled up to 210, and the clutch never got tight.

Is it because I was just sitting in the garage with RPM's up, and no hot air moving?

I would have thought that just sitting there, things would have been hot enough for it to start working...

Maybe time for a new one? This one only has a few thousand miles on it.

Thanks

11-01-2009, 04:06 PM	#1
Jim_PA Registered User Join Date: May 2005 Location: PA Posts: 2,696	Thermal fan clutch operation I was breaking in a new cam today, and at start-up, of course the fan was locked for the first 20-30 seconds. It disengaged, and stayed that way... Engine temps crawled up to 210, and the clutch never got tight. Is it because I was just sitting in the garage with RPM's up, and no hot air moving? I would have thought that just sitting there, things would have been hot enough for it to start working... Maybe time for a new one? This one only has a few thousand miles on it. Thanks



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