1991 Pontiac Firebird 1991 Firebird turns over but won't st

1991 Pontiac Firebird 6 cyl Automatic 116000 miles

I was driving and my car began to lose power, it almost shut off but then it kept going. I drove a little further and my car died on me. I started it up again and drove a little further, and then it died again. This happened 4 or 5 more times until I made it to a gas station. I put in gas because I saw on the gas gauge that I was low, but after I put in gas my car wouldn't start, it just turns over. If I step on the gas peddle as soon as I turn the key my car revs up but it dies immediately. I listened for the gas pump and I can hear it whirring. Someone told me it was either the gas pump or that some kind of alarm had been triggered by the chip in my key.