A/c and Heater always on windshield vents...

Discussion in 'Trucks [ Eighteen Wheelers ]' started by brenes-built, Nov 27, 2012.

  1. brenes-built

    brenes-built Light Load Member

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    Apr 14, 2011
    Vancouver, Wa
    0
    My heater/ a/c blows only up to the windshield. I've just replaced the selector which controls what vents the air blows thur. No luck. Is there any fuses? Thanks..
     
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  3. brenes-built

    brenes-built Light Load Member

    157
    15
    Apr 14, 2011
    Vancouver, Wa
    0
    By the way it's a 99 pete 379.. I think that info might help.. :0/
     
  4. bender

    bender Road Train Member

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    Jul 20, 2010
    Don't Kid Yourself
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    Things can fall down the defrost ducts and jam the blend door or the blend door motor can also cause this problem.
     
    brenes-built Thanks this.
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