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Squeal from AC

09-14-2011, 11:28 AM
I have a '92 4 cylinder. I've noticed recently that when I first start it, if the AC is on, I'll get a loud squeal. If I turn it off right away, or it isn't on to begin with, no squeal. I can drive it for a few minutes, and then turn the AC on, and it won't squeal. Could this be a bad belt, ac compressor going bad, or what else?

Mike Gerber
09-14-2011, 12:11 PM
My guess would be a loose belt. The extra load of the a/c causes it to squeal when cold. As the car is running for a few minutes, the friction of the belt running over the various pulleys produces heat, causing the belt to expand a bit. Once expanded, the belt can handle the load required to turn all the pulleys. Inspect the belt. If it is loose, tighten it. If it is glazed and loose, replace it.


09-14-2011, 08:43 PM
yea definitely sounds like a belt issue to me too. Do not for the love of god put belt dressing on the belt, do it the right way and tighten it if its in good condition and inspect the tensioners and pulleys as well.

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