the car wouldnt start at all so i thought it was the battery or the alternator so i had the alternator checked and it was good so i got a new battery. I installed the new battery and that didnt help so i got new battery cables. Now the car starts but when im driving the car will just shut off and i have to put in in neutral or take the key out to start it again... i donno what the hell is wrong with it HELP PLEASE!!!!