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Thread: anyone ever replace ac compressor on a cavalier?

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  1. #1
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    drain all the oil out of the compressor and measure it. replace the orifice tube if it has one. If you see any metal in the lines or orifice tube then you'll need to flush the lines with a suitable solvent, don't flush stuff into the accumulater, remove accumulater and seal the ends off before flushing. Replace all seals with new ones for safe measure. Try not to blow moist compresser air through the lines. Add the correct weight a/c oil back to the compresser, same amount as you removed. I like to add one additional ounce. After reassembly its pretty much just pull a vacuum for 30 minutes, seal it off and recheck the vacuum level after 15 minutes to verify you don't have a leak. Next you're ready for the refridgerant.

    I know we have a couple a/c techs here online, just don't know if they're around today.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  2. #2
    Join Date
    Feb 2007
    Location
    Sallisaw OK
    Posts
    2,194
    ok awesome. i wasnt going to do the vacuum and recharge but i did want to replace it myself to save the $$. ill have to get a new compressor with a kit of seals and stuff.
    1996 gmc ext cab short bed
    6.6L 4l80e
    MY GARAGE

  3. #3
    Join Date
    May 2007
    Location
    Fort Worth
    Posts
    15
    Quote Originally Posted by RedHeartbeat View Post
    drain all the oil out of the compressor and measure it. replace the orifice tube if it has one. If you see any metal in the lines or orifice tube then you'll need to flush the lines with a suitable solvent, don't flush stuff into the accumulater, remove accumulater and seal the ends off before flushing. Replace all seals with new ones for safe measure. Try not to blow moist compresser air through the lines. Add the correct weight a/c oil back to the compresser, same amount as you removed. I like to add one additional ounce. After reassembly its pretty much just pull a vacuum for 30 minutes, seal it off and recheck the vacuum level after 15 minutes to verify you don't have a leak. Next you're ready for the refridgerant.

    I know we have a couple a/c techs here online, just don't know if they're around today.
    Red Heart Beat is dead on. However you could probably get away with just running the flush on the condensor as most metal collects there and at the orfice. If you have access to a lift it makes this repair much easier. I do alot of cavaliers at work and if its knocking its more than likely making glitter. Hahaha. Oh and after the repair check your cooling fans for proper operation, often times the heat/pressure is what kills the compressor. Sometimes they crap out on their own but I have seen cooling fans alot of times the root of the problem.
    Last edited by Slowpoke; 05-27-2008 at 11:08 PM.
    It's true I think RST does stand for Real Slow Truck.

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