I have 1990 Daytona that starts, revs to 1800-2000 rpm then quits. If I try to crank it again, it just turns over without starting. If I turn the ignition off and then try starting it, it starts and then quits again. It did this a while back but I unlocked the drivers door twice with the key, as I was told this was the way to turn off the anti-theft. It's not working now. Is there another way to turn off the anti-theft or does anyone have any ideas?

Thanks