1998 mercury marquis still running bad after new wires and plugs

Asked by Carolyn Aug 07, 2015 at 04:50 PM about the 1998 Mercury Grand Marquis 4 Dr GS Sedan

Question type: Maintenance & Repair

changed plugs and wires but car still running bad, what could be the problem, check engine still on. What could be the problem?

2 Answers
157,735

Bob answered 8 years ago

Go to Autozone or similar store and get the trouble codes read and post them here. This is usually a free service.

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