Another a/c question

Discussion in 'Peterbilt Forum' started by roadwork, Jun 15, 2014.

  1. roadwork

    roadwork Bobtail Member

    11
    0
    Apr 21, 2010
    Center, Tx
    0
    When idling I leave my fan on. Once the clutch on my compressor kicks off, my bunk blows hot air. Is this a bad expansion valve? I just replace it, my orfice tube, drier, and front condenser. Had a good vacuum pulled on it
     
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  3. jbee

    jbee Medium Load Member

    664
    619
    Jun 3, 2011
    NC
    0
    Sounds like you may have a freon leak.
     
  4. windsmith

    windsmith Road Train Member

    7,296
    6,028
    Sep 2, 2011
    NEPA
    0
    Turn off your engine coolant loop valves that feed the bunk. Under the hood on the passenger side. Small hoses.

    Also be sure to run the A/C fan in the dash as well.
     
  5. roadwork

    roadwork Bobtail Member

    11
    0
    Apr 21, 2010
    Center, Tx
    0
    I have the valves closed for my rear heater in my bunk. I don't have a leak, if I had a leak I wouldn't be able to cut the ac off for 3 or 4 minutes then turn it on and it blow cold again!
     
  6. beemergary

    beemergary Light Load Member

    229
    112
    Apr 11, 2014
    0
    This may be a dumb question but are the coils or anything freezing up.
     
  7. roadwork

    roadwork Bobtail Member

    11
    0
    Apr 21, 2010
    Center, Tx
    0
    As soon as the line frost's up the clutch kicks off on the compressor
     
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