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AC high pressure

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Samot, Jul 15, 2020.

  1. Jul 15, 2020 #1
    Samot

    Samot Bobtail Member

    44
    7
    Mar 5, 2009
    Georgia
    0
    I have a 2004 Pete 357 and the high pressure is at 350. The fan doesn't shut off at all, I've changed the fan switch, orfice tube, accumulator and blew all lines out but condenser. Am i missing something ?
     
    Samot, Jul 15, 2020
    Samot, Jul 15, 2020
    #1
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  3. Jul 15, 2020 #2
    jamespmack

    jamespmack Road Train Member

    19,148
    207,281
    Mar 25, 2014
    OH
    0

    Over charged or blockage.
     
    jamespmack, Jul 15, 2020
    jamespmack, Jul 15, 2020
    #2
    Dino soar and Rideandrepair Thank this.
  4. Jul 15, 2020 #3
    Goodysnap

    Goodysnap Road Train Member

    3,502
    8,382
    Jul 12, 2017
    0
    Radiator blocked with debris? Does it hold a rag?
     
    Goodysnap, Jul 15, 2020
    Goodysnap, Jul 15, 2020
    #3
    spsauerland, Dino soar and Rideandrepair Thank this.
  5. Jul 16, 2020 #4
    Ironmyke

    Ironmyke Bobtail Member

    39
    25
    Jun 18, 2017
    Kansas
    0
    That doesn’t say much, you didn’t mention the ambient temperature and humidity. However, you could put a set of gauges on there check the static pressure as soon as you turn it off. It should not take no more than 5 minutes for both the high and low sides to equalise. If I takes longer I would replace the TXV ad dryer.
     
    Ironmyke, Jul 16, 2020
    Ironmyke, Jul 16, 2020
    #4
  7. Jul 16, 2020 #5
    spsauerland

    spsauerland Road Train Member

    4,296
    10,879
    May 31, 2010
    West Harrison, In
    0
    Shoot temp gun on condenser, sounds restricted.
     
    spsauerland, Jul 16, 2020
    spsauerland, Jul 16, 2020
    #5
    Rideandrepair Thanks this.
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