I had the same issue with my 2001 Durango -- it would start after a jump, but would die when idle. Ended up being a bad battery. It was a Die-Hard and it ended up testing bad at Sears (I got a new one).
Advance Auto Parts and a few other places will test battery, alternator, and starter for free, too.
Monday, February 8th, 2010 AT 4:31 PM