cold start problems

My 1991 mirage when started cold starts and idles ok, but when the accel is pressed it wants to stall. Once i drive it a mile its ok for the rest of the day. there are no codes in the computer and no check engine light.
i changed the cap and rotor wires and throttle position sensor
1991 mitsubishi mirage
1.5 ltr 62,000 miles
auto trans fuel inj mpi