HaV

I had a similar problem when my MAF was dirty as hell now that I think about it. Not exactly the same.. but pretty close.. I wasnt letting my filter dry long enough after I sprayed the cleaner stuff on it and it caused some build up on it. Took about 3 days before it threw a code.. took it of and cleaned them and cleared the code.. runs great since.

Brute03

actually i did run some injector cleaner through it and nothing changed, i don't think the IAC would cause it to hesitate. beleive or not TPS and MAF were my next guesses but i'm not sure how you go about cleaning the MAF (compressed air?) and i don't know how to set the TPS voltage

Dan04COBRA

Electrical contact cleaner is a safe way to clean your MAF. Something like Calgon if you have any...

Typically though, if it were your MAF, you would be having issues nearly all the time, but it does make sense it could possibly be your maf.

Brute03

i bought the car with the mid pipe in place and i didn't see any eliminators when i checked.

HaV

You have to pull it off the car as there are 2 reistors suspended on it. You will need a tamper proof torqe bit or torq allen wrench. I can run out and see what size mine is real quick if you want.. but its probably different on yours. should run you 9 bucks. A q-tip is how you clean it.. least thats how i did. Just do it softly.. You could probably get away with rubbing alch as well also... just use one side with that on there, then wipe it off with the other side of the q-tip...
EDIT: 9 bucks for a set of the allen wrenches..

Dan04COBRA

Safest way is with the q-tip BTW.

It's extremely easy to destroy the wires, you have to be really careful.

Brute03

ok i think i'll try that tomorrow. you guys think it could be the TPS too?

Dan04COBRA

Quite possible the TPS, but typical TPS symptoms disapear after you go WOT. They are usually only evident when you initially hit the throttle.

Brute03

well when i hit the throttle it hesitates, but if i roll into it it accelerates smoothly

Red99Vert

I'm having the same issues on my 99 GT vert. If I jam the pedal/throttle it hesitates just a second before the engine revs. If I get on the gas smoothly - no problems at all.