Stealth_SUX_

We had a problem of the battery dieing and we had to jumpstart. So we just got a new battery and well 2 days later it wont start. The car wasn't started for 2 days after the battery was installed, it was all tested after the new battery and worked fine, but 2 days later it needed to be jumpstarted. No lights or anything we can find is left on. Some of u may think the alternator is gone, but like a said, it wasn't driven. So why does the battery keep dieing.
Thanx

palindromelol

There is only ONE reason why the battery is dying.

Only ONE.

Ya got a closed circuit draining it.

Ok so the question is which circuit is draining the battery? AIRBAG circuit (just kidding)

The Glove box light or a door lock switch or an electric window motor.... bonnet lamp... trunk light, rear window defogger... just about anything that runs on electricity.

That friggin radio has a short in it in mine... It makes a horrible noise sometimes with the key out and knob off. I gave up on it for now.

Funny thing about unplanned short circuits, they are damned hard to find.

All I can suggest is to find it by systematic patience.

Pick a group of devices that you can kill at night. Yank the fuses. Do this with the same fuses each night for 3 nights.

The fastest way to a solution is by binary reduction.

Count up the number of fuses and take out half. 3 nights

If you have a battery after that, then the short was in the fused circuits you pulled. If you have no battery then it is in the ones remaining.

After 3 nights pull half of the fuses in the group that contained the fault. (1/4) of the total fuses. Do it for 3 nights.. etc etc

After 15 days (5 iteration) and 3 dead batteries you will know which circuit it is for absolute certain. (1 out of 32 fuses)

(on average your battery has a 50/50 chance of dying with this method. There is the remote chance that you will deduce the short circuit with never killing the battery)

This is garranteed to work. Anyonw have a DC current meter?

Stealth_SUX_

we have a aftermarket jvc radio in, and this incident happened after that was installed, so what do u think, could it be that, if so what would be happening and how would u fix

palindromelol

That so weird. The only quiky electrical thing I have left is my radio blaring noise at me when it is not even on. It is like it has ghosts. I never traced the issue because it is rare and intermittant.

ocham's razor....the simplest answer is usually the correct one.

Can you pull the fuse on the radio for now to confirm it is the problem. Just do it for a couple nights until you are convinced it is the radio that is the problem.