1998 Dodge Dakota Trouble idling, missing, sputtering

Having trouble starting the truck, keeping it started. Have to restart it, then keep pedal depressed, otherwise, it's like it's not getting gas. Even with this procedure, often have to restart it several times - and always keep pedal depressed to keep engine from stalling. Usually put in low gear to start out, because this seems to help keep engine from stalling. Sometimes the issue doesn't present itself. Other times, after I'm going down the road - regular - the engine will sputter, acts like even tho the gas pedal is depressed that it's not getting gas. Sometimes, after I've had trouble keeping it started, but have got it going and gone a couple of blocks, the engine will idle fine while parked.