I have a 2006 s2000 with 69k miles on it. I have caused my car these problems by stop and go traffic. I got a new job where I would have to drive 20 miles a day in stop and go traffic. After a couple of weeks of this the problem came with my car. The car was fine before my new job and this stop and go traffic. The car one day out of nowhere just kept accelerating when I let my foot off of the gas pedal. I would put it in nuetral and the revs would just keep going up in revs at a constant rate. The only way I can get the revs to drop to idle is by jabbing the gas pedal continuously or by putting it in the next gear and just letting go of the clutch where It drops 4000rpms to the next gear by force. Would this be damaging the transmission or clutch?

The car doesnt act up like this all the time. Generally, when I first start the car and for the first couple miles the revs wouldnt get stuck when I push the clutch in. They drop which creates a smooth shift. I also seem to think at really cold weather it doesn't act up as well as much. But about 90% of the time whenever I push in the clutch, the revs just keep going up like im accelating the gas pedal.

My question is would this be something with the clutch not disengaging out of trans properly?

I cleaned the original throttle body because I thought it was sticking. Next, I thought it was the tps which comes with the throttle body in dbw. I bought a used throttle body online from a reputable auto parts store, it is guaranteed to work. Same results..

I hooked up a scanner tool and the readings i got were:
Map sensor: 3 off, 1 at idle
Tps- Idle 0.8
Accelerator pedal position sensor- 112% when gas pedal all the way to the ground. *This is what I think is wrong* -I think it is supposed to be at 100% when fully opened?

The only other thing I can think of is the throttle body that I got used also has a bad tps in it. But the chances of that are very slim I would think.

This is my daily driver and I am really messing up the clutch on the car, it is starting to make this noise whenever it engages to the next gear like a "chattering" noise, and it is running really bad (wasting bunch of gas) with this problem that I am having. May god bless all of you that have taken the time to read this. Any opinions or thoughts would be appreciated. If someone could give me insight into what I should look at under a scanner tool or if you believe you know what is wrong please help.

 

i did some research and found a very bad 02 sensor, IACV or cruise control could be the problem. Also the TPS could have something to do with it. But my TPS is faulty and doesn't do that, it only gives me jerky acceleration at a certain rpm.

 

Did you check to see if your pedal sensor is good?

 

I think pedal sensor as well

 

Thanks for the reply guys. Now in regards to the o2 sensor or tps, wouldn't that pop up a check engine light?

I have checked the pedal sensor and it is 0% when off the throttle, 112% when throttle is engaged all the way.

Im thinking im going to replace the pedal sensor and see what happens?

Much appreciate the responses guys, thank you.