lost throttle and seems to be misfireing

strokin09

strokin09

diesel nut
Joined
May 13, 2009
Messages
163
like the title says i lost throttle then cel came on also i have replaced the icp ipr but it still seems to missfire or loose power for just a sec but continues to do it when throttle is in a constant place doesnt do it when excelerating or slowing down. about 55 is the worst.
 
not code scanner a scan tool one that can actually read what the engine is doing
 
possibly the high pressure oil pump or maybe you have a bad injector.
 
Possibly check the under valve cover harness. The plug is known to come loose under the valve cover. Ford acually makes a shim to fix this. Or you can cut the edges off a quarter and use it. Much cheaper. Find someone that can do a injector buzz test. That will tell alot too.
 
problem solved took it to the local stealership and they said they are gona try and reflash pcm but is not i have to get a new one thanks to all who helped
 
If the CEL came on then there should be a code, I would bet a CPS if it dies and refires going down the road but without being able to look at the pcm data your are just throwing parts at will
 
Id say fuel system.. bif:Cheer:

Just to clarify... What year and style is this truck?
 
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