FAN CLUTCH for SURE???? - Chevrolet Forum - Chevy Enthusiasts Forums

FAN CLUTCH for SURE????


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dmhoo29's Avatar
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April 23rd, 2009, 8:35 AM   #1  
FAN CLUTCH for SURE????

Okay, How can I be 100% sure my fan clutch is good or bad?
When I cold start it the fan starts out already making noise as if I had driven it on a hot day. After driving it 1/2 to 3/4 miles it returns to normal.
Should this be the norm? Should it be just opposite due to the cold start?

Thanks in advance.

 
EvansBlue's Avatar
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April 23rd, 2009, 10:47 AM   #2  
Most of the time the fan will engage for a little while on start, but usually by the time you get on the road, it clutches out.

 
Mike Sigmond's Avatar
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April 23rd, 2009, 10:57 AM   #3  
My truck does the same sometimes, Isnt there a temp sensor that controls it?

 
dmhoo29's Avatar
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April 24th, 2009, 2:33 AM   #4  
Not sure. Let me know if you find out.

 
MDTAHOE's Avatar
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April 24th, 2009, 7:25 AM   #5  
It is normal. The viscus fluid in the clutch settles at the bottom of the clutch when it sits. As long it goes away it is normal

 
in2pro's Avatar
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April 24th, 2009, 7:38 AM   #6  
There shouldn't be any leakage from the clutch,
don't confuse it with a water pump leak, as both fluids can be slippery to the touch.

There should be very little to no lateral movement at the bearing

There should be no roughness when you rotate the fan manually (with engine off of course)

 
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