l just got a Duralast TPS because l wanted it today. We'll see how it holds up, didn't install it yet. LT warranty.
Duralast is said to be made by NTK/Wells.
Still having Issues!
2001 Grand Prix with a 3.1-liter motor, started idling high after good and warmed up. No codes at the time. When motor would idle too high, 4T65E trans would shift super late under light throttle. About 25 MPH and 2,500 RPM before it would hit 2nd. gear. Was OK the next day.
3rd. day, high idle and late shift again!
This time the check engine light did come on. Code P0121. Scanner TPS angle percentage at idle shows 0 sometimes, and sometimes 0.39% and ~ 100% at WOT. One time while sitting there idling fine, ~ 700 RPM, all at once the idle kicked up to ~1,300 RPM all by itself. I looked at the scanner, now TPS angle percentage went up to 2.75%.
From my scanner readings, it looks to me like the sensor IS receiving the 5V reference, and my ground is good, and my reference voltage is changing and being sent back to the ECM. My voltmeter is at my buddy's garage right now, so I could not do any voltage testing at the TPS connector.
I'm ready to take a chance based on my findings, and just install a new TPS.
Still having Issues! Already replaced TPS.
SOS if not worse, now with a Pending P0101 code.
Can anyone of you all look at these screen shots from Torque Pro and see if you all can make any sense of any of them?
RPM TPS% Temp and MAF are shown. All RPM readings are with accelerator pedal at rest.
KOEO with accelerator pedal at rest TPS % Is 0%.
KOEO with accelerator pedal at WOT TPS % Is 100%
I have a DVOM meter now too.