milleniumm6z28

iTrader: (1)

Having an issuse with my tps sensor....car ran fine and randomly i started it and it had a high idle around 2k.. hook up the scanner to find that my tp was showing 20% at idle.....with the car off and manually sweeping the throttle the tps goes from 20%-60% at WOT...i unplugged the tps and the car idles fine.....replaced the tps and still the same problem. Next i check for a 5v to the tps and found that i was only getting about 2.6v at so i move back to the pcm and same thing there my 5v is about 2.6.... could this be a bad pcm?? the only codes i got from the car were p0121 and a p1122 any input aprreciated

2xLS3

iTrader: (3)

Depending on what year and model you have, some of them also have the ABS tied in to the TPS, so that might be loading down the 5 volt output of the PCM
Remove the gray wire from pin #8 of C1 on the PCM and see if the voltage goes back to 5 volts on the pin