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2013 587 Peterbilt A/C problem

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Franola, Jul 11, 2017.

  1. Jul 11, 2017 #1
    Franola

    Franola Bobtail Member

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    Nov 28, 2016
    0
    I had my A/C charged last night. I've got cold air in the sleeper but it's blowing hot in the cab. Anyone experienced this before or know what's wrong?
     
    Franola, Jul 11, 2017
    Franola, Jul 11, 2017
    #1
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  3. Jul 11, 2017 #2
    Belials

    Belials Light Load Member

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    Jun 10, 2014
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    Get your actuators checked.
     
    Belials, Jul 11, 2017
    Belials, Jul 11, 2017
    #2
    Jmans Thanks this.
  4. Jul 11, 2017 #3
    Franola

    Franola Bobtail Member

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    Nov 28, 2016
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    Actuators where are they located
     
    Franola, Jul 11, 2017
    Franola, Jul 11, 2017
    #3
  5. Jul 11, 2017 #4
    Ridgeline

    Ridgeline Road Train Member

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    Expansion valve is bad or orafice tube is plugged, need to go to the shop, get it flushed and new parts put in.
     
    Ridgeline, Jul 11, 2017
    Ridgeline, Jul 11, 2017
    #4
  7. Jul 11, 2017 #5
    Jmans

    Jmans Light Load Member

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    Sep 3, 2013
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    Actuators are usually the cause on this.
    Even on cars. They are located usually below the cabin under the steering wheel.
     
    Jmans, Jul 11, 2017
    Jmans, Jul 11, 2017
    #5
  8. Aug 14, 2017 #6
    Lazman

    Lazman Bobtail Member

    25
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    Aug 13, 2017
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    I would go with expansion valve , clean lines (flush)
     
    Lazman, Aug 14, 2017
    Lazman, Aug 14, 2017
    #6
  9. Aug 14, 2017 #7
    pushbroom

    pushbroom Road Train Member

    1,779
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    Sep 1, 2012
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    There will be an actuator controlling the hot/cold air to the cab. More then likely its stuck on hot. Depends what year of 387 but it should be accessed on the firewall as it is attached to the heater box.
     
    pushbroom, Aug 14, 2017
    pushbroom, Aug 14, 2017
    #7
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