b2500 van Defrost Fan

1996 DODGE VAN
196,000 MILES
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KINGCOBRA
  • MEMBER
  • 1 POST
heat and air works great. but when you switch to defrost mode fan still blows but it does not blow in windshield air went. it still blows on passanger and other wents. any help is apreciated. thank you..
Nov 14, 2011 at 5:30 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
the air vent doors are run by vacuum. If there is a leak, it can cause this to happen. check for vacuum leaks both under the dash and under the hood.
Nov 14, 2011 at 5:34 PM
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