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A/C problem

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    #1

    A/C problem

    i had a problem with the A/C in my car it took me a while to get around to dealing with it. It had a bad compressor. Before refilling it I was table to vac it out.

    I'm not sure if that may have been the only problem as the AC as it takes a long time before getting cold just seems weak in general. I have checked the AC pressure and it looks good but i'm at a loss as to what next to look at. I did replace the blower motor a while back with a new one it blows strong. Any ideas??
    Tags: None
    #2
    Which refrigerant are you using? When you replaced the condensor, did you pull it into a vacuum again and let it set to be sure there were no leaks in the system?

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      #3
      R22a, I replaced the compressor and vacked it after the replacement. Do i need to look at the condensor?

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        #4
        Originally posted by ciscotech View Post
        R22a, I replaced the compressor and vacked it after the replacement. Do i need to look at the condensor?
        I really hope that's a typo and you mean R12a. If you used R22a, that's probably the problem. The basic principles of the system are the same, but R22a is not going to work in your car's AC.

        Now, assuming that you used R12a, when you vacced it down, did you leave it alone and make sure it held vaccum for 15 or 20 minutes? If it doesn't hold vacuum for that long, you've got a leak somewhere. If you can get one to the engine bay, a black light should show you where the leak is (most refrigerants are treated with UV dye just for this purpose).

        Semi-related story:
        My best friend who is also the guy that trained me for HVAC used to work for an apartment complex where some of the teenage kids were huffing refrigerant out of AC units. (NOT A GOOD IDEA AT ALL). He followed one home, told the kid's mom what was happening and that she was going to be charged for repairs to the condesning unit the kid had damaged.
        She got all shitty with him, told him to go to hell, her kid would never do anything like that, etc. My buddy asked her to call the kid to the door and when he got there, turned his blacklight flashlight on and the kids face and hands lit up like a lamp. You can't explain that one away.

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          #5
          correction, I converted it over to R-134a after replacing the compressor. i do notice is that the pressure seems to drop after turning the AC on. I was thinking on letting a professional redo the vac and refill.

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            #6
            Couldn't hurt. Most places will give you a cheap examination, then you can decide if you want to try to fix it or have them do it.

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