dahveed wrote:how am i able to track down whats draining my battery? i've deduced that this is the problem and not a starter, because whenever i jump the car with my portable battery thingy, it starts off, albeit a little sluggish sounding. as soon as i connect the cables, my clock turns on and everything electrical goes on.
I'm not sure if maybe this problem was solved, but I had a similar issue, and it wasn't fun, so I decided to post this:
You need an ammeter to measure amperage (multimeters need be set to read amps)
1. Disconnect the negative cable from your battery
2. Connect your meter between the negative cable and battery post with the positive side on the detached cable, negative side touching the negative post of your battery.
3. Maintain contact between the points. IN OTHER WORDS MAKE SURE YOU HAVE CONTACT THE WHOLE TIME. I say this because it will take a few moments for your car to return to "rest mode". (connecting the meter will "wake up" some electronics, then return to "rest mode" shortly.)
4. Hopefully your reading is now basically nothing. 25-50 milliamps and up is too much power being drawn.
5. If you have a high reading, or if you know you have a drain already, the super scientific process of elimination begins. You need to start pulling fuses, while maintaining the connection. This usually entails a second person helping. When you pull the fuse from the culprit circuit the reading will jump down instantly.
I suggest logical choices first. IE: I had issues with interior lights, and when I got to the fuse marked "DOME" it jumped to nothing.
Realistically though, this just shows you which circuit has an issue. And does NOT show which component within that circuit is faulty.
To determine that you need to know what loads are on that circuit, determine if the issue is on the ground, or load side of things, etc. etc.
OR: pay someone to do so, or luck out with some electowhiz friend/s.
Best of Luck to all in doubt.