1997 Ford F150 No air flow at floor

145,000 MILES • V8 • 4WD • AUTOMATIC
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DDHLITITZPA
  • MEMBER
  • 1 POST
I'm unable to get heater air flow at the floor vents. The blower works in all speeds. I can select defrost only and panel only and get plenty of air where its supposed to be. When I select panel and floor combined I only get panel - nothing at the floor. When I select defrost and floor combined I only get defrost - nothing at the floor. When I select floor only I only get defrost. I'm able to change temperature from hot to cold - just can't get air out of the floor vents.
Sep 29, 2009 at 1:57 PM
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BMRFIXIT
  • ✓Experienced Mechanic
  • 19,053 POSTS
System and doors controlled by vacuum
check vacuum source from under the hood and into the firewall
Sep 29, 2009 at 2:37 PM
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