P0121.. Throttle Position Sensor A Circuit Range/Performance

**juiced99ws6** · 09-05-2007, 04:00 PM

Ok I have read up to the best of my ability on the problem and have done a few things and cannot figure out what the hell is causing it. I have read symptoms that people have had and said that they experience a surging idle from it and that the car will bog down real bad to the point of barely running and then pick itself up again and go like normal. My car is doing both of those and also is getting horrible gas mileage which again is a symptom so the problem is definatly there is what im getting at. This is the only code I get and I have already replaced the Throttle Position Sensor. I have also checked for continuity to groud and checked for the 5 volt referance signal and everything is there. Also on my Predator I checked the TPS after installing the new one a few days back and the throttle angle seems to register from 0-100% just fine going slowly or quickly. Does anyone have any other ideas on what I may be able to check.

**juiced99ws6** · 09-05-2007, 04:56 PM

ok it is now paired with a P0122 Throttle position sensor circuit low input

Edit:
Ok I am going out on a limb here and saying that I just tripped that code when I was checking wires since I had the TPS disconnected with the car on so I just need advise about the first problem for now if possible

**juiced99ws6** · 09-07-2007, 04:47 PM

Ok I have done tons of reading on this now, I guess I finally lucked out and found a good batch of links for this topic and it seems to me that it could be a tuning issue that wasnt resolved in my initial dyno tune. Hopefully I can have it fixed relatively easy tomorrow. I will report back on here afterwards and let everyone know if it fixes the problem.