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1996 Dodge Ram 2500 Question: air vent close when i accelerate on freeway

 

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truck named bertha, 5.9L V8, Redondo Beach, CA, October 04, 2009, 19:44
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 Rookie

my air works good but i notice when i am on the freeway and accelerate quickly the vents shut until i let off the gas.

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  • Answer #1

    October 05, 2009, 15:31
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     Master

    This is indicating a vacuum leak in the climate control vent system. The airflow to the vents is controlled by vacuum controlled diaphragms, and if there is a leak, this is the symptom.

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