1993 honda accord lx acting weird...plz help

I was driving my car when it stalled at a light. There's gas in the tank and battery is fine. I started it again with success to have it shut off again. I did this about three times and drove it. while driving it would stutter and the rpm would go up then drop. It starts but would shut off. I'm thinking its the fuel injector or pump but I'm not sure.