All vac lines check out. Cleaned throttle body, installed new gasket. No change. IAC doesn't seem to function correctly, what controls the IAC? Also should I be able to rotate my injectors left to right at all. The one on cylinder 8 moves pretty easy. Swapped fueses around to see if anything changes and no dice. Should theTPS move the butterfly? Or does it just relay info. Just so you know I greatly appreciate your input with this. I'm going to order the GPS this pay day and keep fingers crossed.