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Heat & A/C vents

This is a discussion on Heat & A/C vents within the General Help forums, part of the LSx Technical Help Section category; Help! The rotary control that switches the heating / air conditioning vents doesn't change the air flow in my T/A! ...

  1. #1
    Member Fastcar's Avatar
    Join Date
    Dec 2005
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    Jersey Boy
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    Dark blue metallic
    2000 TransAm

    Heat & A/C vents

    Help! The rotary control that switches the heating / air conditioning vents doesn't change the air flow in my T/A! The A/C will turn on, but the air only comes out of the defrost vent on the dash and from the floor vents. The air flow doesn't change regardless of what position the switch is at. Is the switch bad? Do I have a vacuum leak somewhere?
    Last edited by Fastcar; 12-24-2006 at 06:48 AM. Reason: typo

  2. #2
    Senior Member
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    Jul 2005
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    Jacksonville, FL
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    2,725
    Yep, sounds like a vacuum leak. Look behind the intake/under the cowl area and follow the lines.

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