Ok My problem is that my car will not idle any longer. It has been idling ok at about 1600 RPM but would not any lower without falling on its face and dying. Now It simply will not idle in any fashion and when driving it does fine on acceleration but will die when you let off the accelerator. I can hear it when downshifting the tone changes until you push on the gas a bit then it cracks back to life.



This is a 2nd gen with Half bridge motor, Tso4 turbine, 550-1600 injectors. 9.4 Rotors.No BACV or dashpots. Motor is bare bones track only. I have the idle control turned off on the PFC and the idle values set to 0. I have tried everything I can think of. I am suspecting the TPS but then again it should attempt to idle even if it is bad right? I did swap in another one I had lying around and the problem did not really change. I do not have any vac leaks that I can find and this car is MAP sensor so it should idle up and not just die. All voltages for sensors etc are withing spec.



Somebody help me.