I installed a new battery cuz I thought it was the battery. I tightened all the belts. My A/C works but will kill my battery by the end of the day. If I jump start the car and dont use the a/c for a day or two, my battery is perfect. What the funk??? GRRRRRRRRRRR..please help

87 GXL

 

I would start to suspect the alternator. Have it checked at a local place like Checkers or Auto Zone. They do it for free.

Jarrett