You should probably get that checked by a mechanic.
catylatic converter is plugged
engine
If you are saying the engine starts and runs for 15 seconds and dies and then starts again for another 15 seconds and dies . . . the distributor seems to be doing its job. You might want to check if there is a fuel restriction somewhere (filter or pump).
It's probably your IAC.
you use the key that you start the engine with
It means that there is something wrong with the engine and not the battery
did you ever fix the problem ,i have the same problem
Diagnosis: Engine Won't Start or RunCheck related link below
Check the sensors, mine did the same thing and it was the sensors
i have a 1988 Ford Bronco XLT 5.0 4x4. The truck will start and idle for about 15 to 30 seconds then acts like it has no fuel and dies.
it dies and is hard to start ,just keep turning it over about 20 to 30 seconds at a time and it will start back
I would guess, it is starving for fuel. Start by replacing the fuel filter. If that does not help, suspect the fuel pump.