car runs ok for month or two then starts sputtering and losing power. Egr valve has soot in it.
Egr valve is clogging with soot. Car runs ok for a month or two then loses powe on 1996 Saturn SL2
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WHAT ARE THE ENG CODES IF ANY?
autozone diagnostic said egr valve faulty. bought new one and no "check engine" lights are on. thanks also replace spark plugs