Symptoms of a faulty TPS

[PASHN8]

As most of you know I have a VR4 4G63 in my GSR, and all is relatively well. One thing I have noticed is that sometimes, when the car is perfectly at normal temps after driving for 15mins or any time really..I can come to a set of lights, and the revs will rise to 2k - 2500 and sit there for no apparent reason.
One thing I was curious was that with the laptop plugged in, the Haltech seems to struggle to get a precise 'closed' 0% reading from the TPS, and fluctuates between 'fault' and 0%.
Could the TPS be faulty and thus causing the erratic rev spikes?

Dino.

 

[Entaran]

Mine did this, turned out to be some old wiring creating extra resistance. Apparently the wiring tract travels near some part of the engine that gets hot. I'd be checking connections first.

 

[GSR_BOY]

I'm pretty sure there is a function to re-calibrate the TPS so that no pedal travel will set it back to zero.
Doesn't sound like that would be the problem though. Any electrical interference could cause the resistance in the wiring to fluctuate, therefore, it may result in an unstable TPS signal.