I have a 99 camaro V6 auto, that hesitates when accelerating. It all started a couple of months back, with a check enging light, which turned out to be MAF sensor, replaced it and light went away, the car still hesitated (stumbled), checked fuel pump pressure, was kinda low so i replaced fuel pump along with filter and FPR and new plugs and wires and since i was under the hood went ahead replaced PCV, still stumbled, took it to a mechanic he said it was TPS, went to local junk yard since a new one cost $700, picked up a couple of them cleaned them up tired each one, still stumbles, mechanic checked coils, ICM, said they were good. Could it be injectors, wouldn`t they give me codes? What esle could it be?

 

A TPS (throttle position sensor) is no where near the total you gave. A TPS runs around $40 but that wouldn't be the reason the motor stumbles.

 

The TPS on my camaro is one whole unit not like the ones on early models, this is a dealer Item. But what them would cause it to stumble?

 

no injectors do not throw a code. failing injectors should cause a code for misfires though. from what i am seeing the tb has to be replaced to replace the tps. rock has em for 450 bucks
RockAuto Parts Catalog

 

Thanks for the link,i`ll check injectors first.