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AC air problems

Tiny
DUPPIE28
  • MEMBER
  • 1994 CHEVROLET LUMINA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 52,245 MILES
1994 euro. My ac works fine under 1800 rpms. When I accelarate air comes out at the floor. When I let off gas it comes out of vents. Could it be the vacuum cannister? If so where is it located?
Monday, August 22nd, 2011 AT 4:32 PM

3 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Definately sounds like a vacuum leak. Probably a split/loose hose in the HVAC system. The vacuum reservoir is usually a black plastic ball shaped unit under hood somewhere try under battery or around fenders.
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Monday, August 22nd, 2011 AT 7:40 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Also try looking under left headlight.
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Monday, August 22nd, 2011 AT 7:43 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
I use brake cleaner to find the leak. Spary the hose sys. When the idle changes when your spraying. Thats where its sucking air. Gl
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Monday, August 22nd, 2011 AT 10:14 PM

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