it doesnt do it all the time mostly under accerlation it bucks and losses power act like
its down shifting almost but it jerky, feels like the u-joints are about to be knocked out, change tps sensor ,puzzled?clean fuel filter,serviced trans.checked for vacum leaks,I dont know were to go from here can any one help
I have a 99 f150 w/5.4 under normal conditions the truck will start to buck in overdrive or drive ?
check your electronic sensor on your distriburter.just had same problem.
I have a 99 f150 w/5.4 under normal conditions the truck will start to buck in overdrive or drive ?
my truck did the samething i took it in and told the guy that was working on it what was going on he took it apart and but in new cluches and it quit jerky when it shifted from over drive to drive or viceaversa
Sounds more like ignition breakdown under load. Have you tried plugs and check the coils and boots for arcing?? That's where I would start.
I had similar problem on my 99 F150. The problem was ignition. Maintenance shop corrected by replacing ignition wires.
