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ac problems

Discussion in 'Trucks [ Eighteen Wheelers ]' started by blazer_72, Jul 17, 2020.

  1. Jul 17, 2020 #1
    blazer_72

    blazer_72 Bobtail Member

    20
    4
    Nov 18, 2015
    Louisiana
    0
    I drive a 2003 freightliner Coronado, I have a weird problem, my front ac blows hard idling but barely blows while driving have cleaned all the filters and checked the blowers but with it blowing hard sitting still I don't think it's a blower issue. While driving the highest setting feels like the lowest. Any ideas?
     
    blazer_72, Jul 17, 2020
    blazer_72, Jul 17, 2020
    #1
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  3. Jul 17, 2020 #2
    David42

    David42 Bobtail Member

    11
    4
    Jul 4, 2020
    0
    How long your car ac isn't working?
     
    David42, Jul 17, 2020
    David42, Jul 17, 2020
    #2
  4. Jul 17, 2020 #3
    truckdriver31

    truckdriver31 Road Train Member

    6,986
    8,340
    Sep 18, 2013
    0
    maybe a blend door issue. is the blower blowing high or is it set to high and blowing low
     
    truckdriver31, Jul 17, 2020
    truckdriver31, Jul 17, 2020
    #3
  5. Jul 17, 2020 #4
    blazer_72

    blazer_72 Bobtail Member

    20
    4
    Nov 18, 2015
    Louisiana
    0
    it's set to high and barely blows but this only happens while going down the road sitting still it blows hard.
     
    blazer_72, Jul 17, 2020
    blazer_72, Jul 17, 2020
    #4
  7. Jul 17, 2020 #5
    HopeOverMope

    HopeOverMope Road Train Member

    1,801
    3,208
    Feb 25, 2016
    I-20 LOUISIANA
    0
    There’s probably a jumper harness that goes into the blower motor with a plug. Each plug will probably have about 3 to 5 electric lines going into it. Maybe check the plug to make sure the pins are making good contact. The female side could be displaced and road vibration is making the male side barely not make contact for the fan speed your on?
     
    HopeOverMope, Jul 17, 2020
    HopeOverMope, Jul 17, 2020
    #5
  8. Jul 18, 2020 #6
    David42

    David42 Bobtail Member

    11
    4
    Jul 4, 2020
    0
    That's a very good point. I hope this could be helpful for the OP.
     
    David42, Jul 18, 2020
    David42, Jul 18, 2020
    #6
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