Replaced Temperature sensor and thermostat, fan constantly runs.

TPALMER

MEMBER
1992 CHEVROLET
18,000 MILES

My 1992 Chevy K1500 PU appears to be overcooling, I have noticed that the clutch fan is constantly engaged. How do I check to ensure that the clutch fan is functioning properly?

Sunday, January 8th, 2012 AT 12:32 AM

7 Replies

RIVERMIKERAT

MECHANIC
6,110 POSTS

Do you see any fluid leakage on the fan clutch? Does the fan clutch wobble by hand? IS yes to either, replace the clutch.

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Sunday, January 8th, 2012 AT 1:05 AM

TPALMER

MEMBER
6 POSTS

No wobble, no fluid leakage, truck sat for approx. 60 days while I was out of town working. Could clutch fan be stuck or ceased engaged?

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Monday, January 9th, 2012 AT 7:23 PM

RIVERMIKERAT

MECHANIC
6,110 POSTS

Try turning the fan by hand, WITH THE ENGINE OFF. If you can't do it without turning the pulley, the clutch needs replacement.

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Monday, January 9th, 2012 AT 8:55 PM

TPALMER

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6 POSTS

I can turn the fan when the engine is off. If I hold the clutch part at the front of the fan blade stationary, should I still be able to free spin the fan, with the engine not running?

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Tuesday, January 10th, 2012 AT 2:49 AM

RIVERMIKERAT