xboxundone

I have 2001 F150 Supercrew with 5.4L V8 I have had no issue with this truck what so ever.... untill about week ago It started like what seems like a mis fire/sputter or little jerk but it does it randomly.... Usually after sitting for a day start it up and start driving it usually within about 15 miles and usually around 30 - 50mpg will get what seems like a mis fire or sputter... maybe happens 2 times in a row then stop then may go the rest of the drive just fine... I know its not the transimission as it doesn't occurr around any shifting etc... As i can be cruising down road at say 50 and then it will just randomly do it.

I dunno if its a mis fire issue, injector, fuel .... I dunno

It has 72000 I have done no maintence EXCEPT oil changes and replaced the fuel filter.... Maybe its time for tuneup and change of spark plugs... think it would help?

Any suggestions???

calvin

coil pack???? get it checked out your best bet.

NGM

I agree on the coil pack. Pull the rear coil packs and look for water in the spark plug wells.

xboxundone

thanks for the tips. I will mention this to my mechanic... I don't work on my vehicles myself but know enough so that i dont get ripped off.

I will let yall know.

ford_anger 01

i want that kind of mpg hahahaha

sorry i saw it and had to do it!

xboxundone

*LOL* sorry meant MPH

I did talk with my mechanic his first suggestion was what yall reccomended I am bringing it to him tomorrow so we shall see.

underwoodr

let me know what was done to fix your truck im having the same problems

drivered

New guy here, let me know too as my 99 F-150 with the 5.4 has what sounds like a similar stumble to it. Alread replaced all coils and plugs

xboxundone

good news dealer replace4d the coil pack and fixed the issue.