03 Exp misfires

[Expeditionchuck]

I have a 03 Expedtion with 5.4L motor, with 134,000 miles on it. The transmission is a rebuilt one about 3 years old. It has started to miss or "stutter" for a split second while driving at a constant speed. Most less than 55 mph. No drop in tachometer, no engine lights, no shaking. Accelerates w/o problem. They are getting more frequent. Nothing shows on the OBDll. Thanks for your help.

 

[markanthony]

I am saying its a coil or plug missing. Replace coils and plugs.. their also is a angle rubber peice on the back of the motor for the evap systems. sometimes it cracks and brakes. replace that as well.

 

[Expeditionchuck]

Thanks, I will check on those things. It is overdue for a plug change and a coil has gone out before. Have a good one