misfire or lack of fuel when reaching 2500 rpm

[95ReaperGT]

Have a question for ya 04 mustang gt 4.6 hesitatesand misses when u hit about 2500 rpm ...... have changed coils , plugs, fuel filter, air filter, fuel pump , tps sensor, egr, clean out throttle and plenum , changed injectors,tps sensor, IACsensor, Maf sensor also fuel filter and fuel pump. while I put it on a snap on machine tells me everything is wrking fine they way it should so I dk what else it could be have u ever had this problem....

 

[Jrgunn5150]

It hesitated and missed, then you did all that work?

 

[duff daddy]

I know you said the scanner said "everythign is fine" did it have any stored faults?

 

[dutman98]

My car is doing the same thing after my PI swap, but it misses all the way up to 4,000rpms. It is driving me nuts. I cleaned maf, checked plugs, checked wires, and the tps. No luck as of yet. This sucks and I feel your pain man. :BangHead: Let us know if you figure things out.

 

[lilredstang97]

i had this happen to me when i replaced my intake mannifold found out i had something hanging out with the spark plug in its hole and wasnt allowing the wire to hook up with spark plug. but my car threw a miss fire code so idk something to look into though.