I got my car back with a new engine and then later just after a 40 minute drive I couldn't start my car back on for some reason, had to get a boost, now it seems fine. Dave pointed to a dead battery.

Battery is stock from the factory, been in since early 2002.

 

was your engine replaced through warranty?

 

Check your alternator wiring for loose connections, loose belt, low dilectric battery level, etc.