Question about Buick LeSabre

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My surges as I go up a hill,in cruise. But not if I put it in 3rd gear. Whats wrong?

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This sounds like it has a vacuum leak. The reason it doesn't happen in 3rd gear, the motor is turning faster.
Do any other vacuum controlled items stop working at the same time? Like change to the defroster, or from floor vent to dash vent.

Posted on Jul 22, 2008

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