I cant figure out what is wrong with my car, When I put the key in and turn it to the on position all the electrical stuff works, the lights, radio, etc.... then when I go to start it, it will start but when I let the key click back to on then the engine dies. but if I leave it in start it stays running. Also if you turn the key back just so the starter turns off the car still runs but when it hits on it dies. I got it to work a couple times by strating it then clicking it back to on then jiggaling the key. I cant figure this out. I dont think that it is the ignition switch because everything else works in the car, I know its not the starter because it runs without the starter, and I dont think that It could be the fuel pump or filter, and I just replaced the alternater. Please help if you can I am pulling my hair out.