92 Chevy suburban that has a replacement motor
Question:
I have a 92 Chevy suburban that has a replacement motor out of a 91 Camaro truck hesitates at a low idle from10 to 30 mph runs great at other speeds. i already replaced the tps ,plugs ,cat con. What could it be? The timing is dead on its a 305 replacing a 350 truck stumbles cold or hot but again it runs great if you are at highway speed or if you hammer on it.
Answer:
You will need to replace the computer chip, as it is getting it too much fuel at lower rpms!!

