Today at the bank my 93 dx would not start back up. Actually it starts but dies immediatly. It has done the same thing when I park on an incline with low fuel. I have had the car for a year and despite having 180,000 it has never once hessitated to start for me besides being parked on a incline. First off I put 3 gallons of 93 octane in it seeing as my car was close to empty, and the last fuel in the car was from a ****ty gas station. Still wouldn't stay running. So I changed the fuel filter in the parking lot of the bank, in the pouring rain. Still no luck. I have a 9:40 class tommarrow and need my car. What needs to be done?

Thanks in advance.