1996 Other Plymouth Models ENGINE STOPS WHEN IN MOTION

I am using a Plymouth neon 1996, I have used it for
three years now;just recently I notice that when drive , the engine stops, and start again, I was ask to change my fuel filter and pump. Which I did;again the engine still goes off; now when you start start the engine it will not
start, I was ask to check the engine control module, and change it. Now the engine still goes off.
when the car is moving the engine stopped.