sounds like the mechanic pulled one over on you

 

Had the same problem for a few months - tried everything. Turns out it was the speedcal I put in for the 4.10 gears; if you're using one rip it out and give vmp a shout.

 

No he didnt "pull one over" on me, I just cant find the paper work on it. It was 2 sensors and coil pack mainly, and I bought the best plugs and wires they could order and had them put it in. I called about a dozen shops, this guy does great work for less than most and quick.
I do know what your saying though, especialy when I named a sensor that the car doesn't have.

 

just to let ya know your sig is WAY over sized than your alowed to have. forum rules are a max of 500x250 for pictures.