I made a down payment to purchase a 2002 Hyundai Elantra and while viewing the car when the battery was disconnected with the car running the car died. Does that mean it's the alternator? Because if I'm not mistaken that would be the only way that would happen. But the tow yard I'm purchasing it from claims that it's something electronic with the car's computer from the battery being dead. Is that possible or am I being treated as a fool?
If the cars battery is physically disconnected after the engine is started and it dies then it is definitely the alternator, its job is to provide electrical power to run the engine and recharge the battery. I'd get your down payment back because the tow yard is obviously duping you. Who knows what else they may try and snow you about. Good luck.