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Old 08-10-2002, 01:23 PM
Kestas Kestas is offline
I told you so!
 
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,791
It could be the vent doors that distribute the ventilation are moving when they shouldn't. Some cars have a check valve in the vacuum system to maintain vacuum during acceleration, in order to keep the doors in position. If you notice a real effect during acceleration that wasn't there before, I'd suspect a vacuum check valve went bad.
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