Thread: metal shafing noise goes away when turning on a/c

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  1. #1 metal shafing noise goes away when turning on a/c 
    GT Level Member RideWithPride's Avatar
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    On idle sometimes i hear a metal shafing sound but it goes away when i turn on the ac it goes away, is this my a/c clutch or what and i can kind of smell electrical burning.
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  2. #2 Re: metal shafing noise goes away when turning on a/c 
    GrandPrix Junkie gtpeddie's Avatar
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    happened to me before i took the belt off and sprayed wd-40 on the AC compressor that noise went away never came back but now my AC compressor is going. probably not from what i did. take your belts of check all the pulleys

    97 GTP DD, 1952 Ford F-1 Resto Project, 2006 Mustang GT "UnDeR CoNsTrUcTiOn", 02 GPGT SOLD!, 98 GTP Parted/Scraped
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  3. #3 Re: metal shafing noise goes away when turning on a/c 
    Moderator dsmuts's Avatar
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    Sounds like your compressor its in rough shape.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  4. #4 Re: metal shafing noise goes away when turning on a/c 
    GT Level Member chicagochuck's Avatar
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    I'v had this problem on a 96 olds cutlass. I also sprayed WD40 on the compressor and It would quiet down. I ended up changing the compressor, it worked fine but it was shaving metal and loud.
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  5. #5 Re: metal shafing noise goes away when turning on a/c 
    GT Level Member GMCustomerService's Avatar
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    Quote Originally Posted by RideWithPride View Post
    On idle sometimes i hear a metal shafing sound but it goes away when i turn on the ac it goes away, is this my a/c clutch or what and i can kind of smell electrical burning.
    As the other members have posted, the compressor is a possibility. If you would like, PM me the last 8-digits of your VIN and I'll check my resources for any additional information.

    Louis
    GM Customer Service
    Check out the NEW Owner Center at: My.GM.com
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  6. #6 Re: metal shafing noise goes away when turning on a/c 
    GTX Level Member colindunn's Avatar
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    yup. compressor on its way out. what your hearing is probably the a/c clutch when it is dissengaged. once the a/c is turned on it connects the clutch to the pulley which operates the compressor which causes the sound to stop.
    Green Comp G. Headers. Intake. Tune. Pulley. Intercooled.

    SE fascia. Dual chrome tips. Debadge. Retrofit. Lowered.
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  7. #7 Re: metal shafing noise goes away when turning on a/c 
    SE Level Member 99XC600's Avatar
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    Mine actually gets louder when I turn the AC on
    2004 Ivory White Pontiac Grand Prix GT1 - Bone Stock and my 80 mile daily driver.
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