ughh hella misfire

[skyy_4life]

truck: 94, 4.0, 4x4.

so have replaced every single sensor except the following.

tps, iac, o2's, crank pos, cam pos.

the truck sometimes it WILL start misfiring in a open loop status.
it will run fine sometimes but run like shit within a few seconds.

cannot figure it out bro, getting pissed.

has a 70mm maf, bigger injectors, and a hypertech tuner.

im begginging to think the hypertech tuner or ECM is bad.

dont know were to go from here. help plz

 

[skyy_4life]

nvm, this has been diagnosed.

 

[kpilk43]

kpilk43

Hey, what was the diagnosis? I'm having a similar problem but without all the performance mods or the money to chase the problem especially with it being my daily driver with no back up.

 

[feellnfroggy]

If you want an answer then youll have to find him at the turbo ranger forums. Hes been here since 2008 and only 500 posts. He's not on here often, except when he needs help it appears.