Why is the car acting like its missing or surging while driving

Asked by darla_white83 Jun 12, 2015 at 09:06 AM about the 1998 Mercury Grand Marquis 4 Dr GS Sedan

Question type: Maintenance & Repair

It does not do it when I stop or take off I changed fuel filter and its still doing it

1 Answer
5,295

Trippmeister answered 8 years ago

Others may know more. I'd check the fuel pressure (regulator bad?), and use a scanner and get the diagnostic codes. That might tell you something. Maybe the fuel pressure is too high or erratic? You've got to get those codes.

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