2008 pontiac g5 2.2l
I have recently had a new to me engine swapped into my car. The engine was out of a 2008 g5 2.2l so same engine and wiring harness. After the new engine was in it had no power so I put a new battery starter altinator serpinte belt and now it starts and runs for a few minutes then shut off. The battery light us coming on so it is running off the battery I beleive. Anyone have any ideas what could have caused this?