1997 Dodge Ram Mode selector switch

1997 DODGE RAM
162,000 MILES • V8 • 2WD • AUTOMATIC
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DORMSON
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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?
Mar 20, 2010 at 9:30 PM
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JACOBANDNICKOLAS
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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
Mar 26, 2010 at 9:30 AM