| Re: A/C Belt chirps when compressor first engages [message #369568 is a reply to message #369567] |
Tue, 26 April 2022 18:34   |
rjw
Messages: 697
Registered: September 2005
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Senior Member |
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Matt Colie wrote on Tue, 26 April 2022 18:03
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.
Matt
I used to do the 90 degree twist thing back in high school and college until it was pointed out to me that it depends on hand strength. I used to wrestle in college and pretty strong hands. Back then a friend suggested between my hands and a normal girls hands the ability to go 90 degrees or more could depend on gender and/or hand strength. Probably by now my hand strength is the equivalent or less than a kindergarten age girl. So how good would not going to 90 degrees be as an indicator of belt tension? I better get another tool. One can't have too many tools.
Any way I tighten the belt as tight as I could go with a pry bar my son had in his garage. We will see if that is tight enough. The belt looks pretty good with no obvious signs of damage. I really didn't run it that much after the chirping started when the ambient temperature went down under 80. Higher than that the compressor didn't cycle that much. It only chirped at high way speeds when the clutch first engaged.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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