driftin8ez

Ok just to give a background. My car is stock s5 n/a. I removed the acv but everything else is still there. Now here is the problem. My car has always sputtered at idle. Like if you put you hand my the pipes and listen you would here kindof like a pop and the pulse in the exhaust would get stronger for a sec. It is not regularly spaced so i pretty sure all my seals are ok. So here is the problem. Starting maybe 3 weeks ago if i would accel. slowly in say first or second it would buck a little from maybe 1500-3500. no buck deal but you could here the exhaust sputter a little. Now it has gotten much worse. Will cruising on the highway it bucks really hard in 5th gear in those rpm. If i put it to the floor i have no power and it wont accel. But i i floor it from a stop, it accelerates just fine no sputters. Also i was cruising home in fourth gear at a higher rpm and it didn't seem to sputter as much. What could it be? the TPS?

iceblue

1. grounding issue sounds most likely
2. TPS
3. Blown/chiped apex seal

driftin8ez

i made a ground wire kit made to the specs on Rotary Resurrections website. What is the best way to adjust the tps on an s5. Both short and full range read about 1k at closed and about 4.5k at wot.

iceblue

1kohm "or close to" at rest and nothing over 6kohm at WOT 4.5 is just fine.

Make sure all connections from the terminals are good on the grounds and power.

driftin8ez

thanx ill try and get it fixed after school. That is if i make the commute without breaking down.