The problem could be the linkage is adjusted wrong. That car has to see a response from the accell pedal and a matching signal from the ASR components. If the throttle cable is a little too tight, the system gets the signal from the engine side, but not from the accell side. Check the cable adjustment at the rear of the air filter assembly. A small amount of freeplay is all that is needed. If not that, see the dealer.
Turbo herb