throttle problem

[ShotCaller]

sup fellas

Ive got an interesting issue with the throttle and I dont know for sure if its electrical or mechanical.

The problem starts after the car has warmed up to normal operating temps, when it is cold there are no problems.
The throttle no longer responds, its sort of tough to explain but I will do my best, it does it both while driving and when at a stop.
So I will use parked as the control set.
If you press on the gas pedal the engine will rev only 300-400 RPMs and then cut out and if you give it full throttle and hold it down it will rev then cut then rev then cut over and over infinately, the position of the throttle doesnt seem to matter at all. The car is undrivable because of this problem.
All the fuel injectors have been replaced previously, and the car operated normally after.

I was thinking electrical, perhaps the throttle positioning sensor, or the cam position sensor, or the power transistor unit, do any of these sound like a possibility and if not what could it be?

[evildky]

step one would be to check the ecu for codes and to verify that the car has a stable idle on all 6 cylinders, I would suspect the tps or mas

[GerryO]

Would also look into things temperature change related, using some of the information that can be found here, including the section about vacuum leaks.

http://home.swipnet.se/e-solutions/IdleTech.html

http://home.swipnet.se/e-solutions/IdleTech2.html

http://home.swipnet.se/e-solutions/Vacuumleak.html