smahon207

Figured it out at least for my problem.... Wound up being a bad oxygen sensor that wasn't throwing a CEL. If you want to check this you can unplug the front O2 sensor. If that fixes the problem then try replacing that. $150 for an oxygen sensor is better than $450 for the throttle body. let me know how it goes

alright so my car has been acting up lately and i think the TPS might be screwed and i'm gonna have to replace my throttle body. I did some data logging with my accessport when the car was running and i noticed the TPS Duty was jumping all over the place, whether i was idling, accelerating, or WOT. You can physically feel the car surging as if the throttle body is opening and closing. It also jumps around when the car is off and the key is turned to the ON position.

 

I also checked the TPS Voltage and the Throttle Position and they were exactly what they were supposed to be...

 

TPS Voltage - 0.7V at no throttle and increases to 3.9V at WOT

Throttle Position - 5% at no throttle and 100% at full throttle

 

Let me know what you think

 

..oh and car is a 2008 Spec-B