ummm.......it's hard to say where to begin. How does the car idle when it is running? Sounds like you may have a problem with your ignition coils, or your ignition module. (common GM problem). Another possibility is that your computer may need to be reset. The 93 Lumina's need to have their computer reset whenever you leave the batter dead or unhooked for a period of time. So, if you are aware that the battery has been disconnected for over a few hours, this is your problem. Otherwise I would take off your ignition coils and module and take them to your local AutoZone and have them checked. Hope this helps!