2002 Mitsubishi mirage won't run. We replaced both the battery and the alternator. If we jump start it, it will run for a few minutes and then die. I'm at a loss, any ideas? This is my roommate's car, and I'm new to mitsubishi.

could be any number of things, is it throwing a CEL? if it is, take it to a shop and have them run a diagnostic on it.

I'll take it off his hands. Let me know