What else beside fuel pump and fuel filter could problem be?

What is your question?

First van started cutting off during acceleration, had similar problem with same model pickup, so I changed fuel filter. So it ran about the same cutting off a few times, then after a short stop at store, van would not start. Thought it must be fuel pump. But as I prepared to change it I checked gas line at filter and have a strong stream with switch on. Need some ideas?