Car sputtering when giving it gas?

So my 1993 ford tempo 2.3 liter has a sputtering problem. It started when I was really low on gas one day, and it still does it. It happens usually only after driving for a couple minutes and will stop after awhile. Whenever it happens, I floor the gas pedal, and that helps for a short while. It happens usually after I'm idling, like sitting at a red light. Is it the fuel pump? Any filters? Transmission? Any help would be greatly appreciated.

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