Air conditioning

Tiny
RCOLCLEA
  • MEMBER
  • 2003 FORD F-250
  • V8
  • 2WD
  • AUTOMATIC
  • 157,000 MILES
I have a 2003 Ford F-250, when I have the A/C running and increase my Rpms to 2000 or above the air that is blowing through the main vents switches to the defroster vents, why does this happen?
Sunday, June 19th, 2011 AT 4:27 AM

2 Replies

Tiny
DANLESABRE
  • MEMBER
  • 230 POSTS
Is it gas or diesel?
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Sunday, June 19th, 2011 AT 5:40 AM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Suspect vacuum feed line check valve faulty
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Sunday, June 19th, 2011 AT 8:31 PM

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