93 grand marquise

390

Asked by Oct 14, 2014 at 02:53 AM about the 1993 Mercury Grand Marquis LS Sedan RWD

Question type: Maintenance & Repair

93grand marquise missfires at idle but when accelerated runs fine could it be
spark plug gap

1 Answer

2,955

Could be plug wires, but not sure since it's only at idle.I'd replace them just because it eleminates a variable, and they do go bad eventually.

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