1991 Chevy Corsica running rough at low speeds wont start a

I have a 1991 Corsica with the 3.1 engine. Lately it runs a little rough around town. It surges when I take off. And occasionally dies.

Last night I drove about 25 minutes. Parked it and did some shopping. Half hour later it ran but barely. I drove it about a block and it died and would not restart. It would fire and run for a second and that was it.

I tried some starting fluid and that didnt help. After messing with it for a while I cranked it over and pumped the gas pedal repeatedly. It started and ran very rough. I continued pumping and it cleared up and ran decent.

The SES light has not turned on once.

I had a similar problem a month ago and took it to a shop who replaced the fuel filter.

A good friend said its probably the module. Any ideas as to what it may be.

The car was used by little old ladies its entire life. I've put on 4000 miles in the last 4 months. Its had oil changes regularly. Mechanically it seems like a good car. Just an oil leak until this happened.

Help!