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My car runs like S when moisture is in the air...fog, rain. '92 Grand Marquis, Are plug wires the problem?

2 Answers

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  • 6 years ago
    Favorite Answer

    Yup, the most likely cause is the plug wires shorting out when the air is wet. You may have a distributor cap that's cracked or carboned up. I would replace that too.

  • Anonymous
    6 years ago

    While it's not the only possibility, it's the most likely reason.

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