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1989 while driving check engine light comes on and the car runs rough

(1990 Pontiac Bonneville)
in Medical Lake, WA on December 31, 2014
If I turn it off it comes back fine. Occasionally it will do it again after restart but not always
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Popular Answer
on July 01, 2015
check your plugs wores and look under car after it gets warm and see if your catalatic converter is glowing if it glows may need new one
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