1994 Pontiac Grand Am defogger not working

Tiny
MROX5000
  • MEMBER
  • 1994 PONTIAC GRAND AM
  • 4 CYL
  • FWD
  • MANUAL
  • 205,000 MILES
When I switch to defrost or defogger nothing comes out the top vents by the windshield
Thursday, January 8th, 2009 AT 9:53 AM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
You will need to get to the lines at the back of the controller to test this. Start car, put selector in defrost, vacuum is not applied to blue hose. Move selectoir to any other position but defrost, vacuum should be applied through the light green hose. If not as described, repair vacuum lines or replace the defrost vacuum actuator or repair as needed
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Thursday, January 8th, 2009 AT 12:10 PM

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