roadsleeper

Anyone else running PMO ITBs? The throttle position sensor on mine is giving my Motec and I issues.

Basically, I think the potentiometer might be a bit dirty or faulty, and it is giving a false reading to the Motec. When the throttle is at 0 (i.e., butterflies shut), the pot sometimes gives a reading of 10 degrees open (shows on the Motec readout), but when I work the throttle through it's full sweep a couple of times and restart, the sensor is recalibrated to 0.

Has anyone else had this problem? The TPS is a GM part, so I'm inclined to point the figure at it, haha.

Geoffrey

The GM sensors that fit the PMOs are known to do that with age. Buy a new sensor.

roadsleeper

Great... It's less than a year old... Do you know of any better parts?

roadsleeper

Bumping this thread back to life...

TPS #2 has died, so it seems that the lifespan for these things is around 12 months... Super...

The car is at the workshop so I can't check myself, does anyone happen to have the GM part # for the TPS by any chance?

My options are apparently 1) replace the current TPS (i.e., repeat process in ~12 months), or 2) have a special mount fabricated and use a Porsche OEM/Bosch sensor (i.e., $$$).

Geoffrey

How is it wired? Do you have 0v (not ground), 5v, and a sensor signal lead?