I have had my truck to 3 dealers and a private shop and after $4800.00 later I still have the same problem . I have had the coils (2 times) ,plugs ,ECM,and the computer replaced and the injectors cleaned. Guess what it still runs like . What can I do now aside from selling it . It missfires and bucks under a load or under 2500 rpm , if you floor it its not bad. can anyone help its a 2000 f150 5.4 with 114,000 miles on it

 

What codes are you getting?

 

Did they do a compression test on it? That be my guess, one or more of the cylinders is low on compression causing it to miss?? Bob

 

$4,800 without a proper diagnosis is scamming by me. Sounds like everyone just takes it in, guesses what it is and throws parts at it..
More details for the reason that particular work was done, check engine light? Codes?

MAF sensor been cleaned? Throttle body cleaned? pcv system checked? Fuel filter been changed? Has any of the techs checked fuel pressure? Compression? Something has to show its face

A service tech with the proper equipment should have ran it on some live mode 6 data under the same conditions in order to monitor what is going on.