how 2 tell whats killing my battery?
04-03-2007, 09:26 PM
#2
3rd Gear Member
Join Date: Jan 2006
Location: North Carolina
Posts: 903
RE: how 2 tell whats killing my battery?
I discovered that my rear window defroster was killing my battery about a year ago. I would turn my car off and the next morning the battery would be dead or slow to start my car. I was cleaning my rear window one day in my garage and the window was hot and my car keys were in my pocket. I looked in the car and my defroster light was on. I just disconnected the two connectors in the rear window and took out the fuse.
04-04-2007, 10:51 AM
#3
2nd Gear Member
Thread Starter
Join Date: Dec 2006
Location:
Posts: 406
RE: how 2 tell whats killing my battery?
i heard something about putting a ohm meter on the battery and start pulling fuses.i just need to know what setting to put the ohm meter on and what draw should be with the key off.
04-04-2007, 10:46 PM
#5
4th Gear Member
Join Date: Sep 2006
Location:
Posts: 1,031
RE: how 2 tell whats killing my battery?
ORIGINAL: mariotraci
i heard something about putting a ohm meter on the battery and start pulling fuses.i just need to know what setting to put the ohm meter on and what draw should be with the key off.
i heard something about putting a ohm meter on the battery and start pulling fuses.i just need to know what setting to put the ohm meter on and what draw should be with the key off.
You have to put the meter in SERIES with the battery and it should be set to measure DC Current.
Then you start pulling fuses and see when it drops to the normal range which for most cars should be somewhere around 25 milliamps or so.
If it's more than 100 milliamps you have a problem.
Most fuses however control more than one circuit so now you have to figure out what circuits that particular fuse controls and troubleshoot from there.
If you have no idea what I am talking about, you might be better off having someone with electrical troubleshooting knowledge assist you because you can cause some very serious and expensive damage to your car.
04-05-2007, 02:31 AM
#9
2nd Gear Member
Join Date: Jan 2007
Location:
Posts: 351
RE: how 2 tell whats killing my battery?
ORIGINAL: undecided.steve
You have to put the meter in SERIES with the battery and it should be set to measure DC Current.
Then you start pulling fuses and see when it drops to the normal range which for most cars should be somewhere around 25 milliamps or so.
If it's more than 100 milliamps you have a problem.
Most fuses however control more than one circuit so now you have to figure out what circuits that particular fuse controls and troubleshoot from there.
If you have no idea what I am talking about, you might be better off having someone with electrical troubleshooting knowledge assist you because you can cause some very serious and expensive damage to your car.
ORIGINAL: mariotraci
i heard something about putting a ohm meter on the battery and start pulling fuses.i just need to know what setting to put the ohm meter on and what draw should be with the key off.
i heard something about putting a ohm meter on the battery and start pulling fuses.i just need to know what setting to put the ohm meter on and what draw should be with the key off.
You have to put the meter in SERIES with the battery and it should be set to measure DC Current.
Then you start pulling fuses and see when it drops to the normal range which for most cars should be somewhere around 25 milliamps or so.
If it's more than 100 milliamps you have a problem.
Most fuses however control more than one circuit so now you have to figure out what circuits that particular fuse controls and troubleshoot from there.
If you have no idea what I am talking about, you might be better off having someone with electrical troubleshooting knowledge assist you because you can cause some very serious and expensive damage to your car.
