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2005 Columbia ac compressor problem

Discussion in 'Freightliner Forum' started by daledst, Apr 26, 2012.

  1. Apr 26, 2012 #1
    daledst

    daledst Bobtail Member

    1
    1
    Apr 14, 2012
    dobson nc
    0
    My 2005 Columbia has power going to the ac compressor all the time even with the switch off. Have even removed all fuses and relay's, unhooked climate control.
     
    daledst, Apr 26, 2012
    daledst, Apr 26, 2012
    #1
    kwswan Thanks this.
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  3. Apr 27, 2012 #2
    leftlanetruckin

    leftlanetruckin Road Train Member

    3,607
    3,163
    Mar 12, 2009
    Mo Via Blackpool,Lancs.
    0
    Tried putting the bunk into the heater setting on the temp knob?

    Martin
     
    leftlanetruckin, Apr 27, 2012
    leftlanetruckin, Apr 27, 2012
    #2
  4. Apr 27, 2012 #3
    dave26027

    dave26027 Road Train Member

    1,284
    804
    Sep 10, 2009
    Dallas, Texas
    0
    I've got an '05 Columbia too- sounds like you have chafed wiring- a wire with 12 volts of energy in it has rubbed through the sheathing and is energizing your compressor clutch. Chafed wires are common on this truck.

    Just a thought- your engine and trans might not be grounding any more because of corrosion- try making a sturdy ground wire from the compressor clutch to the frame or directly to the negative post on the batts.
     
    dave26027, Apr 27, 2012
    dave26027, Apr 27, 2012
    #3
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