Okay, so I need some help. Never had much by way of electrical problems with my cars, so I know next to nothing about troubleshooting this stuff.
Today, my car wouldn't start. I got a jump and got going again. After the jump, the car was behaving a little strangely. The volt meter was pegged at 16, the door beep was going super fast, and the idle was shitty. It died when I got to my girlfriend's school. I got another jump and went home.
At home, I replaced the battery terminals, charged up a much newer battery, threw in that battery, and started it up. Ran great, volt meter looked good, door beep was the correct speed. I thought it was fixed.
About an hour ago, I went out to get cigarettes. The car drove fine there. When I got into the parking lot, it started to die. I flicked the lights off and was able to keep it going. I got home by keeping the revs above 1000. When I was in the parking lot and the car was acting up, it was exhibiting the same problems as earlier today: pegged volt meter, fast door beep, crap idle.
So, what this is telling me that something is draining the battery, the alternator is working overtime to compensate (No clue about the door beep). Whatever it is, it can drain the battery in just a couple miles, even while diving 40 mph.
So where do I start?