GPM30236

Have a 427 with a procharger that has been on the car for about 8k miles now, got it back last fall and have driven it a lot. Since the weather has gotten warm it has been throwing the codes above, when checked the codes it lead to the accelerator position sensor sensor as malfunctioning, This was replaced by the dealer. The codes are still being thrown and the engine immediately goes into reduced power mode. The situation only seems to happen when the ambient temperature is above 90, the builder / tuner says he can't find a reason for this , does anyone know of a possible solution, love the car but am reallly frustrated having reduced power message happen 5 times this afternoon alone.

Thanx

wrencher

iTrader: (2)

The TAC (throttle actuation control) system needs to be diagnosed, something is obviously wrong.
First thing I would be looking into is all the powers & grounds into the PCM & the TAC module. (The 2 next to each other in the lower portion of the passenger fender)
Any one familair w/ GM TAC systems can likely figure this out.
It does sound like either a intermittant connection or a faulty module.

GPM30236

Thanx for the suggestion , will do that this afternoon, the car was disassembled for almost a year while it was being redone. have also considered the throttle body, Its aggravating to go to reduced power unpredicably, multiple times in a row when driving at highway speeds.