Question about 2000 Dodge Ram 1500 Truck

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Loss of a/c air through front vents

When accelerating, air stops coming out from front vents and switches to TOP vents-defrost vents.......what is up? I have the 2000 dodge 1500 Van 8 cyl 5.2L I have mostly the same problem but whihle we are driving the air switches from the floor to the middle and then to the windshield back and forth jsut started a fe days ago.


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  • Anonymous Mar 19, 2014

    when the fan is on the air only comes out of front vents

  • Anonymous Mar 27, 2014

    Heater on won't switch to defrost, upper vents, only comes out on the floor



2 Answers

Rams had a problem with the check valve not holding vaccum. Get a dodge neon check valve which is bigger to fix problem. Check valve is located above accumulator (drier).

Posted on Sep 11, 2008

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You have a vacuum leak. Engine vacuum is used to move the doors that control airflow for the heat and ac.

Posted on Aug 28, 2008


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