1997 Dodge Ram Mode selector switch

Tiny
DORMSON
  • MEMBER
  • 1997 DODGE RAM
  • V8
  • 2WD
  • AUTOMATIC
  • 162,000 MILES
On my 1997 Dodge Ram, the blower mode switch does not change the vents the air somes through. When I turn the fan on it only blows through the top of the dash (defrost vent) and the floor vents. It will not blow through the dash vents no matter what setting it is on. It only blows through the defrost and floor vents at the same time, all the time. Any clue why this is?
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Saturday, March 20th, 2010 AT 9:30 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
In this case, you are looking for a vacuum leak. The vent doors are actuated by vacuum. If there is a leak, it will stay in a defalt mode (defrost / floor). Check under the dash for leaks. With the engine running, you may hear a hissing.

Let me know what you find.

Joe
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Friday, March 26th, 2010 AT 9:30 AM

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