I would start by checking for vacuum leaks. Also, the engine should idle at 900 RPS in park and about 700 in gear. When you put the rear defrost on, it is putting enough load on the alt to kill the engine at such a low idle. If I had to guess, I would say there is a problem with the throttle position sensor, but I can't guarantee that without a check engine light and code. Since you are not getting that, I would check for vacuum leaks.
Also, the car has a 5 year 50K 100% warranty on emission components, so any sensor or emission component is covered parts and labor. Maybe you could ask them to replace the TPS under warranty. Also, if the car keeps dieing on you, it is a hazzard. If you purchased the car new, they have 3 chances to repair a potential dangerous problem. If they can't fix it, it may qualify for the lemon law.
Check for vacuum leaks and see if they can bump the base idle up to the RPM I mentioned. If there is a vacuum leak, usually you can hear a hissing sound.
Tuesday, February 24th, 2009 AT 6:18 PM