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sqeaking A/C

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Old Jul 25, 2008 | 03:55 PM
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From: Woodbridge VA
Default sqeaking A/C

So I've been trying to run down a squeaking problem with my father-in-law's '02 Coupe for a few weeks now without any luck.

When he turns on the A/C, the car squeaks. If he turns it off, it immediately stops. We've WD-40'd everything, and it does nothing for the squeak. If it were one of the pulleys, I would expect it wouldnt go away when we turn off the A/C (as the pulleys all still seem to be still spinning away).

So, anyone have any ideas?
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Old Jul 25, 2008 | 04:02 PM
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From: Santa Fe TX
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Could be the blower/motor if it's interior nose. If exterior, compressor bearing?

Could also be a worn stretched belt. The compressor puts quite a load on it and it could be slipping under that load. IIRC the AC belt only turns the AC, the other belt turns everything else.

Could be some rust on crank or ac pulley. Could be runout on the crank pulley itself. Try some silicone on the "sides" of the AC belt.
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Old Jul 25, 2008 | 04:38 PM
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audible from both inside and outside the car
definitely coming from under the hood, on the passenger side

thanks for the tips, will try that
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Old Jul 26, 2008 | 11:35 AM
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we replaced the belt and the AC idler
no joy
it looks like the AC clutch...
no idea whats involved in that one tho
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