Question about 1997 Mercury Grand Marquis

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Hi, I have a grand marquis with 220,000 miles. It has just started to run like it has a fouled plug or bad wire. They were replaced 3 years ago. Now the check engine light came on flashing for about 3 mins then it stayed on. The car idols in park fine. Thanks

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I would say you need new wires and plugs they should be replaced every two years and more likely the plugs are fowled out

Posted on Sep 16, 2010

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