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I experienced this problem after my car was leaking motor oil due to old faulty gaskets that needed to be replaced. Apparently because of the oil spreading everywhere it reached the engine mount. The oil combined with the heat from usage caused to wear down the rubber portion of the engine mount. I noticed the rough idling was gone once that piece was changed. Side note: It also helps to make sure your timing belt is well calibrated to determine proper idling. ANSWER: Another posibility is a vacuum leak or an air leak between the MAF meter and the intake plenum.

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16y ago

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