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1997 Pontiac Grand Prix Air Flow

Tiny
BOB05
  • MEMBER
  • 1997 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 148,000 MILES
Hello. After replacing a battery on my wifes Grand Prix yesterday, she informed me that her AC was not blowing as hard as it should be. Air is cold but not blowing at normal velocity. Upon inspection I noticed that air was blowing from the floor vents as well as the dash vents. I adjusted dash controls from floor to dash several times but could not get air to dash vents only. Is there a vacuum or relay that controls the air flow? Could this have been caused by replacing the Battery? Where should I look?
Thanks!
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Wednesday, June 18th, 2008 AT 2:10 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Check the vacuum lines under the hood, there may be a vacuum resevoir near the battery that got disturbed or a line got cracked, now the vent control isnt getting good source vacuum
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Friday, June 20th, 2008 AT 7:59 AM

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