A/C Clutch Rattling. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-10-2010, 10:13 PM   #1
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Default A/C Clutch Rattling.

The A/C clutch has been rattling for about a year on the 97 Bonne Ei when I turn on the A/C the noise goes away. I don't have the clutch nor the knowledge to replace it at the moment therefore when the clutch dissengaged I spray it with WD 40 today and the rattle noise went totally away. Will this cause any damage until I have a new clutch and knowledge in hand, let'* say next year? I could spray it with silicone, lithium or other spray instead of WD 40.
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Old 08-10-2010, 10:38 PM   #2
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Sounds like all you need is to adjust the clutch. Here'* a write up.

https://www.gmforum.com/mechanical-134/adjust-ac-clutch-plate-278951/
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Old 08-10-2010, 10:51 PM   #3
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Thanks for the info Dan, only problem is I don't have that tool and I don't want to remove the compressor and open up the system since it'* giving me cold air. I don't have much luck with A/C.
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Old 08-10-2010, 10:56 PM   #4
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The toll is like $30 I think. You should be able to adjust it in the car.
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Old 08-11-2010, 09:16 AM   #5
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Thanks for the info Dan, In the meantime do you think it'* a problem if I keep spraying the clutch for now?
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Old 08-14-2010, 12:48 AM   #6
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Probably should not post this but here goes.

Years ago before I owned the proper A/C clutch pulling tools I had a clutch rubbing on my 86 Cutlass. I knew the clutch was just pressed on and only needed a small gap between the clutch and the pulley to stop the noise.
I picked up a thin bladed putty knife and a dead blow plastic hammer and taped the putty knife in between the clutch and the pulley. I rotated the clutch and taped the putty knife in all the way around.

That was the last time that clutch scraped when the compressor was off.
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