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Re: A/C Belt chirps when compressor first engages [message #369567 is a reply to message #369566]

Tue, 26 April 2022 17:03

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma:

Senior Member

Richard,

You may not be aware that this is why early GM cars with A/C used the heater to temper the outlet temp as opposed to trying to cycle the compressor. It is also why the later A6 compressors all have that massive iron sheave to be a flywheel to get the compressor going.

Now that we have filled that in, you could probably tighten the belt enough to make it stop. I bet you don't have a belt tension gauge in your tool box and you can't find the app for it at the App Store. Try twisting the belt. If with bare hands, you can make it wind up more than 90°, it is too loose. That is worthwhile try, but only a possibility as the start slip you have been hearing may have already damaged the belt surface. It is still worth a try.

Another "cheap trick" would be to find a spray can of belt dressing. This stuff amounts to being spray on "sticky" that can improve the belt's traction in the groove.

I hope you have a boring drive home.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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[Message index]

		A/C Belt chirps when compressor first engages By: rjw on Tue, 26 April 2022 14:46
		Re: A/C Belt chirps when compressor first engages By: Matt Colie on Tue, 26 April 2022 17:03
		Re: A/C Belt chirps when compressor first engages By: rjw on Tue, 26 April 2022 18:34
		Re: A/C Belt chirps when compressor first engages By: Ken Burton on Thu, 28 April 2022 02:25
		Re: A/C Belt chirps when compressor first engages By: rjw on Thu, 28 April 2022 06:58
		Re: A/C Belt chirps when compressor first engages By: jhbridges on Thu, 28 April 2022 07:12
		Re: A/C Belt chirps when compressor first engages By: JohnL455 on Thu, 28 April 2022 07:38
		Re: A/C Belt chirps when compressor first engages By: jhbridges on Sat, 30 April 2022 07:45
		[GMCnet] Re: A/C Belt chirps when compressor first engages By: gmc-email-list on Sat, 30 April 2022 07:45
		[GMCnet] Re: A/C Belt chirps when compressor first engages By: powwerjon on Sun, 01 May 2022 10:22
		Re: [GMCnet] Re: A/C Belt chirps when compressor first engages By: blur911 on Tue, 31 May 2022 21:14
		Re: A/C Belt chirps when compressor first engages By: rjw on Tue, 03 May 2022 09:22
		Re: A/C Belt chirps when compressor first engages By: Scott Nutter on Tue, 31 May 2022 19:11

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