2007 4900 western star AC

Discussion in 'Western Star Forum' started by down south, Aug 12, 2017.

  1. Aug 12, 2017 #1
    down south

    down south Bobtail Member

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    my rear air blows cold front. air blows air but not cold the expansion valve is cold on fire wall I don't have gauge here at truck stop cleaned condenser and evaporator in front it's not cold there
     
    down south, Aug 12, 2017
    down south, Aug 12, 2017
    #1
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  3. Aug 12, 2017 #2
    boneebone

    boneebone Road Train Member

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    Mar 13, 2009
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    Check the front A/C Blend Door, some are manually activated, some are electric.

    If it's not opening or closing all the way, you won't get the desired temperature you are seeking.
     
    boneebone, Aug 12, 2017
    boneebone, Aug 12, 2017
    #2
  4. Aug 12, 2017 #3
    down south

    down south Bobtail Member

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    6
    Nov 4, 2016
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    Are you talking the fresh air door
     
    down south, Aug 12, 2017
    down south, Aug 12, 2017
    #3
  5. Aug 12, 2017 #4
    Cetane+

    Cetane+ Road Train Member

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    Sep 29, 2013
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    Turn the valves off that come from the engine for the heater hoses. They are usually mounted on the engine.
     
    Cetane+, Aug 12, 2017
    Cetane+, Aug 12, 2017
    #4
  7. Aug 13, 2017 #5
    down south

    down south Bobtail Member

    37
    6
    Nov 4, 2016
    0
    They have been off
     
    down south, Aug 13, 2017
    down south, Aug 13, 2017
    #5
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