1997 Dodge Ram Mode selector switch

1997 DODGE RAM
162,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
DORMSON
  • MEMBER
  • 1 POST
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
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
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
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.