corvette744
2004 Z-71
My problem sounded the same and i replaced my clutch fan and solved the problem.Go see if your fan spins freely when its been off and cold.
AC Performance
- Thread starter Tonyrodz
- Start date
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Tonyrodz
Resident Resident
I just checked it. It does. Truck never runs hot tho, wouldn't it run hot if it was bad?
live2pull
Full Access Member
Yes, one would think. When the clutch starts spinning faster with engine speed, and engine tempurature. If your engine temps are normal, and not seeing an increased temp at idle, I suspect it is fine. It should also freely spin when the engine is cool to allow engine temp to increase more rapidly.
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Tonyrodz
Resident Resident
It spins freely, so I guess that isn't my issue. I almost wish it was so I could just fix it and have cold air again.
live2pull
Full Access Member
If only it were that easy.
corvette744
2004 Z-71
My clutch fan spun easily and was told it should not do that-should have alot of resistance when off and cold.I would get a second opinion on that bet thats it.I was also told to get the oem gm brand as most aftermarket ones are junk.My tahoe did not run hot or overheat either.
David Kriss
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When you clean your condenser, get a can of condenser cleaner from Home Depot, Lowes or similar place. It's a spray can and can be found in the HVAC department for less than $10. You spray it on the condenser, let it sit then hose it off. It does a much better job of cleaning than just using a hose. I cleaned both my cars last spring and I noticed an improvement on both cars. Neither had been cleaned in years.
the clutch fan should not just spin freely it should spin a little and brake, the hotter it is the less it should spin free, even if it is cold and you give it a spin it shouldn't just go and go like it was on a ball bearing.
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Tonyrodz
Resident Resident
No, it wasn't free spinning like that, there was some resistance to it.
live2pull
Full Access Member
Freely spin may have been a poor choice of words, light resistance may have been better. At any rate, the fan clutch is designed to spin the fan at lower speed when the engine is cool and faster when it is at operating temp, and with engine speed. I also agree with using the condenser cleaner from Home Depot/Lowes/Ace.
