Mcstick62406

So, i have a 2001 Mustang v6. I am currently having a problem where my battery drains dead if my car sits longer than oh 12 hours. I ve changed the battery, alternator good. Well anyways this has been going on for a year (about), Someone broke into my car, jacked up my driver side window to where it stays slightly sideways and the motor has apparently burned out when i was trying to fix it. Anyways the thiefs stole my radio also. I have neons hook up also (underbody) and some aftermarket headlights. I need to get my car running so im gonna put back the stock headlights, ive alrdy unhooked the subs, and im gonna unhook the neons to see if any of them are causing the apparent short. Also i've hooked up a volt meter to it while the care was off and it was pulling about 10 Ac Volts. So any ideas??? Some feedback will be greatly appreciated. Thank you

89MUSTANGCONVERTIBLE

In the fuse box start pulling one at a time to find out were the short is coming from.

corvetteguy

A car battery cannot "pull 10 AC volts"
The "AC" range on the volt meter will not
read on a DC battery.

You can measure the "DC VOLOTS" across the
battery terminals.
14.5 volts running
12 volts off.

You can disconnect the "+" battery terminal.
Set the voltmeter to "DC AMPS/MA" and
connect the black lead to the "+" terminal
and the red cable to the hanging red battery
cable.
What you read is the DC current draw. It
should be less than 100 mA or .1 A.

shortchange

I've been dealing with a similar problem on my 96 cobra. After hooking up a DMM I discovered a 205mA drain. I started pulling fuses out of the power distribution block under the hood and after pulling the audio fuse the amperage dropped to 75mA. Further investigating led me to the passenger side rear amplifier. After disconnecting it the current remained at 75mA (apparently the amplifier was bad and stays on). If I pull fuse 8 out of the I/P fuse block,the 75mA reading drops to4mA. Is 75mA an acceptable reading or do I have another problem? It would be nice to see what other cars are reading so I could establish a baseline.

colt1567

If you don't want to fix the problem right away, just hook the battery up to a trickle charger and leave it on until you need to drive it again. I do this on my dad's '69

phazkys

could be a bad relay pull all nite