My 03 with 6mt sat for a few months and wouldn't start. The battery was dead and wouldn't take a charge so I replaced it. I then drove it eight hours home with no incidents. I drove it for a week and then suddenly it was hard to start. The issue seemed to be the camshaft position sensor. I went to a shop and they hooked up their diagnostics to the car and it was indeed. They cleared the codes and today it drove fine. Now the car won't even turn over. The lights flicker and it acts like there is no battery at all. So I guess I have to replace the sensor now?

 

Yeah, that would be my next fix. Those sensors go sooner or later.