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06-12-2018, 02:02 PM
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#1 |
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Registered User
 
Join Date: Jun 2004
Location: On The Beach, S C
Posts: 613
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Compressor "chirp"
I have Vintage Air on my truck with about 5k miles (in 5 years) on it. I rarely drive my truck. The compressor (Sanden model S6668) works but started "chirping". I can turn off the a/c and the chirp stops. I checked the belt. Any ideas on what to do other than drive it more?
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4oldcars Driving: 1971 Jimmy w/68 Chev front clip, 1953 Bel Air 2 dr hdtp, 1996 Roadmaster wagon, 2000 Eldorado The ones I let go: 1931 2 dr sedan, 1935 pick up, 1938 2 dr sedan, 1962 SS 454, 1963 409 wagon, 1970 short bed, 1972 short bed, 1972 sub, 1976 short bed, 1986 long bed, 03 short bed |
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06-12-2018, 02:20 PM
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#2 |
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Registered User
Join Date: Nov 2011
Location: Williamsburg, VA
Posts: 960
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Re: Compressor "chirp"
I had a similar issue with my ac belt chirping. I could not get it to stop. I did some reading and came upon a product called 303. I picked it up at advance. I conditioned my belt with it about a month ago and the chirp has not came back. It doesn’t gum up a belt like dressing and it will actually help the belt last much longer.
Last edited by jessemthompson; 06-12-2018 at 02:38 PM. Reason: Spelling error |
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06-12-2018, 03:08 PM
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#3 |
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Registered User
Join Date: Oct 2016
Location: Dallas Texas
Posts: 3,155
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Re: Compressor "chirp"
You could also use a bar of soap to dress the belt(s) as a test.
-klb
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67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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06-14-2018, 09:03 AM
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#4 |
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Registered User
Join Date: Jun 2004
Location: On The Beach, S C
Posts: 613
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Re: Compressor "chirp"
Thanx - sounds like an easy fix - how unlike what usually happens to me
__________________
4oldcars Driving: 1971 Jimmy w/68 Chev front clip, 1953 Bel Air 2 dr hdtp, 1996 Roadmaster wagon, 2000 Eldorado The ones I let go: 1931 2 dr sedan, 1935 pick up, 1938 2 dr sedan, 1962 SS 454, 1963 409 wagon, 1970 short bed, 1972 short bed, 1972 sub, 1976 short bed, 1986 long bed, 03 short bed |
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06-14-2018, 06:21 PM
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#5 |
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Registered User
Join Date: Feb 2003
Location: Santa Ana, CA
Posts: 2,191
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Re: Compressor "chirp"
Are you running the correct width belt? If you run a belt that is too narrow, it will go all the way to the bottom of the pulley V-groove, and make contact with the flat bottom of the groove. No amount of tightening of the belt will get rid of the noise now that the belt tension is no longer controlled by the tapered side of the pulley groove on the side of the belt, but rather the flat bottom of belt against flat bottom of groove. I had this issue with a custom built alternator, and swore up and down that the alternator had a bad bearing. Put a wider belt on it that didn't touch the bottom of the pulley groove and it has been silent ever since.
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06-14-2018, 07:08 PM
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#6 | |
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Senior Member
Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,811
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Re: Compressor "chirp"
Quote:
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