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1998 Dodge Durango wont change from defrost to vent

Tiny
ALLENPURCELL
  • MEMBER
  • 1998 DODGE DURANGO
Air Conditioning problem
1998 Dodge Durango V8 Four Wheel Drive Automatic

need to know to get off defrost and to vent it wont switch over and yess blower is working
Sunday, May 23rd, 2010 AT 8:54 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Chances are you are looking for a vacuum leak in this case. Check under the dash and the hood for leaks. The vent doors are actuated by vacuum. If the vacuum pressure is too low, it won't switch.

Let me know what you find.
Joe
NOTE: If you are lucky, with the engine running you may hear a hissing from a leak.
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Monday, February 4th, 2019 AT 6:11 PM

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