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  1. #1
    Member 1st TA's Avatar
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    Jul 2006
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    Pewter
    02 WS-6 w/ Ram Air

    heater duct control

    My boy has a 94 Z. When he is on the gas a little heavier the air coming out of the ducts will change outlets. Then when he backs out of it it changes back to where it was. What should I be looking for?

  2. #2
    6SpeedZ
    Join Date
    Aug 2005
    Location
    Virginia
    Posts
    54

    Medium Patriot Red
    1993 Camaro

    A new car?

  3. #3
    Junior Member
    Join Date
    Jul 2006
    Location
    NC
    Posts
    35
    the a/c vent controls are vaccum operated. I believe there is a check valve inline to keep the changing manifold pressure from affecting the vents until you actually change the switch. Also check your vaccum lines and make sure you don't have cracked a line or tore a boot

  4. #4
    Member 1st TA's Avatar
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    Pewter
    02 WS-6 w/ Ram Air

    If I start the car to get the vac. going then unplug the hose to the check valve should the check maintane the vac. if its good?

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