Question about 1995 Pontiac Grand Prix

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My car idles at 3 and the brake is stiff - 1995 Pontiac Grand Prix

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  • Richard Scordino May 11, 2010

    Check for a vacuum leak to the brake booster. Hose from booster to engine may have cracked or fallen off. Booster itself may have failed. If you block the end of the hose, see if rpm's go back down. (3thousand rpms or 3?)

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Sounds like you have a major vacume leak, Chk. line going to break booster. Do you hear a loud hissing or whiseling noise either comming from under the hood or under the dash especily when you apply the break? If under dash could be bad break booster, if under hood still could be booster or a break in the vacume line from engine to booster.

Posted on Sep 07, 2009

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