Thread: Jerking/skipping

reply:

Sure he has 5four? 5fours don't use plug wires.

I don't think its the battery. -Does he lose his pre-sets once in awhile?

I don't understand his description in bold. He may want to re-write that part. I got everything else. So,- Mainly upon acceleration or under power would be the fuel filter IMO.

If shes missing under normal acceleration and at its worst right after the shift into OD, - that points to a bad coil and a low grade misfire.
Have him throttle up normally thru the gears and let us know when the misfire is most noticeable when doing so.

That's really all you have as far as determining the problem part easily without a DTC or just taking it in to a dealership and having them pull up cylinder history (mode 6) to determine the problematic cylinder(s).

Also, if he purchased new ebay coils, coupled with a half ass install, that COULD make this type of problem an even worse one. He may have to start over depending upon products used and how he went about the install.

I'd start with fuel delivery first tho. New filter/fuel pressure check.

Ur right I have no wires idk why I even stated. That lol an yes it's a 5.4 and not a tranny issue gears change smooth the jerking hoping just started today again around 40 mph with easy acceleration it's like I'm hitting the gas then not hitting the gas pedal then hitting it ect ect it's like a stop n go as u would say its not throwing anymore cel's oh yeah 150k miles

Btw I'll try n do a video

Have you ever changed the fuel filter?

How do you "check" a fuel filter?

Id change out spark plugs first, and rule that out. Then move to COPs (Coil on Plug)