ok so my battery light has been comeing on, and my car died today... so we jump started it and i ran fine... till the car would just die even driveing it... so i figured it was the alturnater, so i raplaced it with a spare i had and threw in a new battery... and we jumped it, it ran for like 2 mins and it seems to have plenty of charge now, but it died after 2 mins... and it wont start at all now even with a jump... and it turns out im not getting any spark at all now?!... so do any of you have any ideas of how to fix this? is it just a bad alturnater? and would a bad alturnater cause this? plz help... thx