Ok the other day my car would not start. Jumped it off and it started. Everything was fine... figured I left the light on or something. Two or three days went by and it died again. Jumped it off and noticed my rpm's when I was at idel and had the a/c on they would run low and flutuate... when I say low I mean between 650 and 800. When I turned the a/c off it remained steady at 800rpms. I changed out the battery and it is still doing it.
I think It may be the alternator... My dad thinks possible the stupid fuel pump.
Fuel pump affects the rpms only when the a/c is on?? And fuel pump drains the battery??
Which do you think it is... or none of the above...
College student in despair