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1996 Ford Expedition decreased A/C performance

Tiny
WILSONS
  • MEMBER
  • 1996 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 93,000 MILES
Our 1996 Ford Expedition has recently developed an a/c performance problem. The a/c basicly shuts down when ever I depress the gas peddle. It come right back if I stop depressing the gas peddle. What could be causing this problem.
Thursday, July 29th, 2010 AT 9:01 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,173 POSTS
When you say it stops, do you mean the air flow changes direction?
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Friday, July 30th, 2010 AT 12:14 AM
Tiny
WILSONS
  • MEMBER
  • 2 POSTS
The air flow does change from the normal vents up to the "defrost" vents. However, the "cold" air stops.
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Friday, July 30th, 2010 AT 6:47 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,173 POSTS
I feel confident you are dealing with a vacuum leak. The vent doors and blend door are actuated by vacuum. If there is a leak, that is what happens. Check under the dash and hood for vacuum leaks. If you are lucky, with the engine running, you will hear a hissing sound.

Let me know what you find.

Joe
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Friday, July 30th, 2010 AT 11:30 PM

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