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1996 dodge air conditioning problem

Discussion in 'Ram Trucks' started by plowmaster07, Aug 11, 2009.

  1. plowmaster07

    plowmaster07 Senior Member
    Messages: 438

    Hi everyone,
    So for the past year now, my a/c clutch has been broken, and I finally replaced the compressor 3 days ago. After fully charging the system, the compressor still fails to start. Here is what I checked.

    The coil in the compressor
    The high pressure port, both sides
    The a/c clutch relay
    The vehicle side of the low pressure port.

    Wondering if anyone knows where to find the wiring diagrams for the a/c unit, or has any possible ideas that can help.

    Thanks,
    Aaron
     
  2. GPS

    GPS Senior Member
    from MA
    Messages: 268

    If the original AC clutch coil was shorted, it probably popped the fuse in the PDC (underhood fuse box).

    If you jump the low pressure cut-out switch wiring, does the compressor clutch activate (engine needs to be running)?
     
  3. plowmaster07

    plowmaster07 Senior Member
    Messages: 438


    The original clutch coil was not shorted, but the spring snapped that engages the clutch, Is that the fuse box right behind the battery? I have tried jumping the low and high pressure switch, and it doesn't kick on.

    Thanks,
    Aaron
     
  4. GPS

    GPS Senior Member
    from MA
    Messages: 268

    If I remember correctly, that's where the PDC is on that year Dodge. I'd definitely start there.
     
  5. plowmaster07

    plowmaster07 Senior Member
    Messages: 438

    I already checked the a/c clutch relay, it is not bad, I swapped it with the horn relay, and still I had no a/c clutch. other thoughts?

    Thanks,
    aaron
     
  6. GPS

    GPS Senior Member
    from MA
    Messages: 268

    With the engine running, and AC selected, you should have power to the AC relay terminals that correspond to pins 30 and 85 marked on the relay. The terminal that goes to 86 on the relay should be the ground feed from the PCM to latch the relay.
     
  7. plowmaster07

    plowmaster07 Senior Member
    Messages: 438

    I will check it out in the morning, I appreciate the help alot, thanks! where abouts in MA are you located, im out of ashburnham.

    Thanks,
    aaron
     
  8. GPS

    GPS Senior Member
    from MA
    Messages: 268

    Aaron,

    I'm out in Grafton. Hope we can get this resolved for you. I'll try my best to answer any questions.


    Ken
     
  9. lotec25

    lotec25 Member
    from Florida
    Messages: 47

    I know this is an old post. But i have the service manual in PDF for the dodges. If you or anyone needs it let me know and i can put it someplace you guys can download it
     
  10. plowmaster07

    plowmaster07 Senior Member
    Messages: 438

    Well it's only an old post because I haven't had the time to look into the a/c more. But that would be awesome if you can help me out with that. Either you can send me a p/m for my e mail address or try and post it up here.
    Thanks,
    Aaron
     
  11. lotec25

    lotec25 Member
    from Florida
    Messages: 47

    PM sent with the link. just pass it on, has helped me a few times. If anyone else needs it let me know.
     
  12. plowmaster07

    plowmaster07 Senior Member
    Messages: 438

    Awesome! Thanks again!
    Aaron
     
  13. lotec25

    lotec25 Member
    from Florida
    Messages: 47

  14. plowmaster07

    plowmaster07 Senior Member
    Messages: 438

    yeah I got it off the first one that you posted from the msg you sent. It works amazing.

    Thanks again!!
    Aaron