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A/C Clutch constantly cycles

Discussion in 'Trucks [ Eighteen Wheelers ]' started by tonymathis, Apr 19, 2018.

Page 2 of 2
  1. Apr 21, 2018 #11
    tonymathis

    tonymathis Bobtail Member

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    Apr 19, 2018
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    I read on one forum that replacing a blower motor in the bunk system required going into the computer and resetting something. I've yet to find a way to access it through my DDDL software but I haven't spent a lot of time trying.
     
    tonymathis, Apr 21, 2018
    tonymathis, Apr 21, 2018
    #11
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  3. Apr 21, 2018 #12
    GrapeApe

    GrapeApe Road Train Member

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    Jan 7, 2013
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    If it's computer controlled, you'd need ServiceLink. I'm out of touch on Freighters these days, but I thought 2007 Columbia's didn't have chassis and cab controllers yet. Maybe I'm wrong.

    With the AC clutch cutting out at 150 psi, I'd guess that it's a temp switch doing it. I'd be back probing and monitoring each switch, 1 at a time, until I found the one that's kicking the clutch off and go from there. Then a temp gun could help you figure out of the switch is bad or is something like the evap core getting too cold and go from there.
     
    GrapeApe, Apr 21, 2018
    GrapeApe, Apr 21, 2018
    #12
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