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Thread: AC Question

  1. #21
    Jr. Apprentice
    Join Date
    May 2011
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    Stockton, CA
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    Click image for larger version. 

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    Sorry it took an extra day to post the picture.

  2. #22
    Legend
    stephan's Avatar
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    Far West, Oregon USA,
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    Zamble, that looks suspiciously like your high pressure switch, not the low. Kind of hard to tell from the pic cuz it's so close, but that looks like the high pressure line & the one beyond it is the low. The larger diameter line will be your low press line. Also it will run from the compressor to the firewall.
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


  3. #23
    Jr. Apprentice
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    May 2011
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    Stockton, CA
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    So the low pressure switch, is that going to be on the side of the accumulator?

  4. #24

    Cool

    It sounds to me like you need to check the one on the accumilator. With the A/C on, unplug the switch on the Accumilator. take a peice of wire and bridge the contacts on the wireing harness. This should engage your clutch. If it does, your switch is bad and it is an easy fix. If it doesn't, something else is wrong. Hope this helps.

  5. #25
    Jr. Apprentice
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    I tried that, after I realized that was the low pressure switch. And the compressor still would not come on.....

    It's funny how frustrating it is. The compressor works, but some small thing is preventing it from working.

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