I have a 2001 f150 with the 5.4 it starts up and idles fine when you drive the first 500 to 1000 feet it misfires really bad you can shut it off and start it back and it does good for another 500 to 1000 feet then does it again I have hooked a scanner up to it and it was reading misfire in number 1 cylinder changed plugs and coil packs also threw code for MAF sensor so replaced it as well it has me confused and im running out of options

 

Did your parts replacement resolve the codes ?

 

Yes, but still has misfire and a short distance of driving it, i have to shut it off and it will run good for a short distance it's like it does it under load at a idle it will rev up good untill it spits and spudders even in the act of it doing it I can put it in park and it still does it till I shut it off and restart it

 

Yes, but still has misfire and a short distance of driving it, i have to shut it off and it will run good for a short distance it's like it does it under load at a idle it will rev up good untill it spits and spudders even in the act of it doing it I can put it in park and it still does it till I shut it off and restart it

 

Sometimes the computer has to complete some drive cycles after repairs to adjust to the new parts. Mine was similar after a misfire. I replaced plugs and wires and it still ran rough for a day or so. The it just started running smooth after some driving. Look into drive cycles for more info.

 

I have been driving it for about 2 weeks now and its the same issue

 

Without codes it will be difficult to identify the source of the problem.
Could be anything from a fuel problem to an electrical problem.

You may need to take it to a dealer and have them do a diagnostic.

 

I will hook my scanner back up to it tomorrow and take a picture of the codes that is there and see if that helps

 

Do follow up. The computer doesn’t have to adjust to plugs or coils.

 

there are currently no active codes on it so now I'm lost with it