Question about 1997 Mercury Grand Marquis

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1997 Mercury Grand Marquis check engine light came on took it to AutoZone they said # 1 cylinder miss-firing now light is flashing is this a serious problem please help?

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  • The Bad Chad May 11, 2010

    How about whens last time you did the Spark plugs and wires thats when mine came on the wires were bernt and the plugs were fould out. Change all that and give me thumbs up if that fix it i bet it will, And another thing makes the light comes on when you O2 censors foul out. buts your sounds like just wires and plugs should fix it.



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If you don't address it, it will be more serious as in burnt valves, burnt up converter, possibly more engine damage. Get it repaired. Probably needs just a tune up, but needs to be checked to be sure.

Posted on Jul 29, 2009


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O<--Coil packs-->O


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