I need urgent help have no idea what the problem is. I have a 1994 F150 5.0 4x4 E40D tranny with 235,000 miles and a three year old rebuilt transmission. I recently had the fuel injectors cleaned and also replaced the the throttle position sensor. My problem is the truck jerks and bucks at any speed when I put it into reverse or drive it like slams into the gear it is also ideling real high and has almost no power going up hills sometimes it will not get passed 20 to sometimes 40 mph if i can even have the peddle to the floor and it takes forever. Please help what could this be I am out of ideas.

 

Do you have any codes? Why did you replace the TPS? Checking codes is your first job.

Craig

 

No codes, recently fixed and egr problem, replaced the throttle position censor was suggested by a friend that could be the problem it is not.

 

LOL you might want to check your ignition coil go test it at the auto parts, they should do it for free. To me it sounds like you got some really weak spark and the bucking might be the motor misfiring. Keep in mind that an unloaded coil vs a loaded coil (in gear) will behave differently if it is on it's way out!

 

Have you checked your fuel system for good pressure, fuel pump, clogged
fuel filter, my truck was acting like yours and it was a clogged filter.