Engine Performance problem
1985 Ford Bronco 6 cyl Four Wheel Drive Automatic

I have a 1985 ford bronco 2. it will start and idle fine but when in gear if you press the accelerator lightly it stalls. if you floor it it will run but poorly. when idling if you punch it then let off it will stall. i already replaced the fuel pump and filter. No mass air flow sensor on this vehicle and is carburated.