'93 Prelude throttle/idle problem
I have a problem with the idle speed on a '93 prelude SI with a 2.3 liter 5 speed. I know there have been many threads regarding idle issues with Gen 4 preludes but my problem has some unique symptoms. Idle is perfect when the car is standing still. If the car is moving at all it will idle between 2,400 and 3,000 RPM if you put it in neutral or press in the clutch. As long as the car remains rolling it will stay at this very high RPM. It remains at this high RPM until the car comes to a COMPLETE stop for about 2 or 3 seconds. Then the idle will return to normal, about 900 RPM. I have replaced the Fast Ilde valve. the IACV and the TPS. I assume the car is getting a signal from the ABS system that it is moving but why is it trying to control the idle speed when the car is moving? Any help would be greatly appreciated.
Steve P. in NC