my car stalls at point of acceleration on 1991 Chevrolet Caprice

Car turns on stays at idle once I test drive it stalls after I stop and accelerate again. Check engine code indicates it could be camshaft actuator position sensor. My car is not equipped with that particular sensor. Need help any suggestions.

Asked by for the 1991 Chevrolet Caprice
poss idle air control valve.
I have replaced idle air and coolant temp sensor will check connections thanks.