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  1. #1
    Newbie jdmack0208 is a glorious beacon of light
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    Default A/C Problem in 94 Silverado

    I have a 94 Silverado with a 5.7L 350 V8 in it. I am trying to isolate the problem with my air conditioner to see if I have a bad clutch or if I need the whole compressor. When I turn the A/C on I hear a click which I presume is the relay turning on from the low pressure switch but the clutch on the compressor does not spin. I think it is supposed to turn which is what makes the compressor work right? Any help I can get on this would be greatly appreciated.
    1994 Chevy Silverado

  2. #2
    Sr. Mechanic bill190 is a glorious beacon of light
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    Default

    Check your fuses. And check the A/C refrigerant pressure.
    92 GMC Sierra 2500

  3. #3
    Master Mechanic tattooed4life is a splendid one to behold
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    Default

    Definantly check the pressure, if there isn't enough it won't do anything except click.
    1997 Chevy K3500
    4x4 X-Cab Dually
    454 Dual Exhaust

  4. #4
    Newbie jdmack0208 is a glorious beacon of light
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    Default

    Well I jumpered the connector going to the pressure switch to eliminate the freon from being my problem and still no go. I will check all the fuses again hopefully it's something that easy but I doubt it. I just need to know if that clutch is supposed to turn or not so I can eliminate that as well.
    1994 Chevy Silverado

  5. #5
    Legend Jimmiee has a reputation beyond repute
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    Default

    The clutch has 2 wires power and ground. If it has battery voltage and you supply the ground it should engage. If it doesn't then the air gap is too big or the clutch is bad.
    Jim

    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows



    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser


 

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