Heater Problems

2002 FORD EXPEDITION
130,000 MILES • V8 • 4WD • AUTOMATIC
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BEACHIN2009
  • MEMBER
  • 1 POST
My heater on my 2002 Ford Expedition blows out the defrost vents but not my front vents. What would cause this?
Dec 29, 2010 at 10:03 PM
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.
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Check for vacuum leaks under the dash. The vent doors are actuated by vacuum. If there is a leak, this will happen. When checking, start the engine and listen. If you are lucky, you may hear a hissing sound where the leak is located. NOTE: Make sure to do it in a well ventilated area.
Feb 7, 2011 at 7:52 PM
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