HVAC Recirc - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-28-2009, 08:26 PM   #1
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Is the Recirc mode on the standard HVAC system in 1997 supposed to use 100% interior air only? When I use Recirc I still get blasts of exhaust from other cars. I have confirmed that the recirc door opens. I can see it open so I know it is using recirculated air when I look behind the heat vents on the floor. However, outside smells (exhaust, skunk, etc) still get in.
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Old 09-28-2009, 11:02 PM   #2
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Odors can sneak by old gaskets and seals. If the vent'* are working correctly, start checking to see what the condition of the outside air vents gaskets are.
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