I was recently in an accident in which I was hit from behind. After assessing the damage, I started my '02 Taurus and attempted to take off. The engine sputtered a bit then cut out. I tried to restart the car, but to no avail. Since then, I have tried to start my car. It will crank, but won't turn over. The check engine light comes on when I do this. My friend's father thinks it could be a killswitch, maybe the neutral safety switch. If so, what would I need to do in order to get the car up and running again? Any and all help is appreciated. Thank you.