1998 Expedition 5.4 misfires "stutters" upon mild acceleration and load

Asked by Jan 25, 2015 at 06:51 PM about the 1998 Ford Expedition 4 Dr Eddie Bauer 4WD SUV

Question type: Maintenance & Repair

The truck displays the symptoms of bad coils but no codes have generated.  Problem visible on scope as stutter (misfire) moves among the cylinders.  Replaced all coils about 9 months ago.  No spark plug carbon tracking.  Ideas?

2 Answers

2,535

Did you replace the wires? How is you Fuel Pressure at Idle and at a Higher RPM?

No didn't replace the wires

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