AC/heater control

Tiny
HJONES
  • MEMBER
  • 1995 DODGE CARAVAN
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 105,000 MILES
Turning the ac/heater control nob will not move the air to defrost or floor. It only comes out the vents. Why?
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Tuesday, December 28th, 2010 AT 2:03 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
It sounds like you have a vacuum leak under the dash. The airflow vents are actuated by vacuum. If there is a leak, it won't shift positions. Check under the dash and the supply hose from the intake. IF you are lucky, you may hear a hissing sound from the leak with the engine running.
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Thursday, February 10th, 2011 AT 6:16 PM

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