TPS Code
TPS Code Recent tune, but now getting terrible surge and dead spots in the powerband. SES light comes on and throws code P0121 TPS. It also drops to about 400 RPMs and wants to die when I stop, then returns to normal idle. I have cleaned my MAF, which was filthy but had same outcome. Also, I can unplug my battery and it will run fine until the SES light comes on immediately followed by my TCS light after about 45 min of drive time. I have read the gear chatter post but dont have access to a vacuum meter or scan tool to do the troubleshooting. I do have a multimeter. I have always researched and found all of the solutions to my problems but need help on this one. Thanks for any input.
Last edited by birdman7601; Sep 4, 2010 at 12:14 PM.
You should be able to diagnose this one with your volt meter. First, with the ignition on, ensure you are getting 5V at the gray wire on the TPS. If yes, check the voltage at the blue wire. It should range from approximately .7V at closed throttle, and go up to 4.5V at WOT.
Report back with your findings.
Report back with your findings.
