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2002 Ford Explorer Air Conditioner vents

Tiny
BRANDONKELLY
  • MEMBER
  • 2002 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 76,000 MILES
When I run the A/C in the city, it works fine. But when I throttle up on the expressways the forward vents turn off when I exceed 50 MPH. Air stops flowing from the forward facing vents but still comes out the floor and window vents. What would cause this?
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Tuesday, May 25th, 2010 AT 6:18 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
In this case, you are looking for a vacuum leak. THe vents are actuated by vacuum. When you accellerate, the engine vacuum drops. If you have a leak, the direction of the vents will change.

Check under the dash and the hood for leaks. With the engine on, you may get lucky and hear a hissiing sound.

Let me know what you find.

Joe
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Wednesday, May 26th, 2010 AT 6:31 AM

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