BG87z

My car will not start randomly. But its becuause the battery will not charge. I think that i need a new battery since its four years old. But the next day after it has had time to cool, the battery charges and starts the car till I get on it or the car gets very hot. Is the heat of the engine doing somthing to my charging system. Its really annoying. Somedays when i really get on it for a short time and come home the battery is dead. I tested the alternator with a voltometer and it tested fine. Im completely confused on this. If someone can give me some help i would appreciate it.

1986redbird

check the replys in the Tech/general section.

P.S. double posting usually pisses some of the people off around here, just word of warning.