94 ford explorer help

my explorer seems not to get gas when you push on the gas petal to fast or when it's cold or even on the freeway also it will jerk in and out, kinda like a sputter.. but seems to do just fine when you push on the gas petal slowly, plus the check engine light is going on and off and sometimes just stays on... I changed the... throttle body sensor, the plugs, wires, coil did a fuel injection service, cleaned the throttle body, cleaned the idle air controller, but did not replace because engine is does not rev up and down..

Have you had the codes read on it? How about a new fuel filter?

I havent tried to hook it up to a computer yet.. but the only thing I could think of is the sensor in the crank