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387 ac issues

Discussion in 'Peterbilt Forum' started by GreenMachine387, May 25, 2016.

  1. May 25, 2016 #1
    GreenMachine387

    GreenMachine387 Bobtail Member

    1
    1
    May 25, 2016
    0
    I have a 2005 387 with a CAT c15. Im having issues with my ac in the cab area. The fan blows on all 4 levels like it should, but it is not cold. But the ac in my sleeper is cold and working just fine. What could be the cause of this? Checked all fuses and relays.
     
    GreenMachine387, May 25, 2016
    GreenMachine387, May 25, 2016
    #1
    Road Killer Thanks this.
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  3. May 29, 2016 #2
    rick3305rick

    rick3305rick Light Load Member

    50
    21
    Sep 18, 2013
    0
    Ive got the same exact issue, well it just happened as I was parking it the other day for the weekend. My bunk was cold but the front wasnt, I got out and checked the compressor and it was engaged. I started to close my hot water valves then decided to open them back up because it worked before and should work again. I actually got back in and it was working again, maybe something was sticking and not opening or closing and I mightve just bumped something enough to get it to work, lol... Ill wait to see what happens here, my fan is actually only blowing on high, I havnt had a chance to look at that yet, im hoping its a fuse or breaker.
     
    rick3305rick, May 29, 2016
    rick3305rick, May 29, 2016
    #2
    Road Killer Thanks this.
  4. Jun 3, 2016 #3
    bavarian

    bavarian Heavy Load Member

    727
    781
    Feb 13, 2014
    Winnipeg
    0
    Your fan working on high only, it's the resistor.
     
    bavarian, Jun 3, 2016
    bavarian, Jun 3, 2016
    #3
    Road Killer and peterbilt_2005 Thank this.
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