Cause of Drained Battery?
#1
Instructor
Thread Starter
Cause of Drained Battery?
I went to start my vette yesterday but the battery was completely dead. I had it out runnin excellent a coulple of weeks ago and it has never gone dead on me before. I have a brand new alternator that works excellent and a brand new die-hard gold. I never left the key on or anything like that.
Is it possilbe that there's something there drawing the juice now? Anyone else have this happen?
Thanks
Is it possilbe that there's something there drawing the juice now? Anyone else have this happen?
Thanks
#2
Burning Brakes
Member Since: Jan 2002
Location: many sticks land of mountains
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Re: Cause of Drained Battery? (StingRay327)
My 76 has this problem. I have it narrowed down to the fact that the ignition switch (where the key goes) is worn out. I can turn this when the key is not in sometimes. If the steering wheel is not locked, and I pull the key, my battery drains. So I think my problem is in the column or the switch.
good luck.
good luck.
#5
Safety Car
Re: Cause of Drained Battery? (StingRay327)
You sure it's a dead battery. It could be a bad connection not allowing full juice to go to your starter.
If it is that everything is dead- It could be your "new" alternator that has a problem with maybe a shorted diode.
If you still have a problem, you can hook up an ammeter (DMM on 10A or 2A scale) from your battery V- terminal to the disconnected negative cable and check the reading-after you charged up your battery.
If there is more than a 100 milliamps ballpark of current draw, you have something pulling current. You can start to pull fuses to see what circuit you can trace the draw to.
I have also heard of problems with the interior light timer relay box located behind the glove box area overheating-deforming-going bad and causing strange problems like this.
Good Luck
Brent...
If it is that everything is dead- It could be your "new" alternator that has a problem with maybe a shorted diode.
If you still have a problem, you can hook up an ammeter (DMM on 10A or 2A scale) from your battery V- terminal to the disconnected negative cable and check the reading-after you charged up your battery.
If there is more than a 100 milliamps ballpark of current draw, you have something pulling current. You can start to pull fuses to see what circuit you can trace the draw to.
I have also heard of problems with the interior light timer relay box located behind the glove box area overheating-deforming-going bad and causing strange problems like this.
Good Luck
Brent...
#6
Le Mans Master
Re: Cause of Drained Battery? (StingRay327)
Don't omit the battery as a problem.. I had three BAD die hards in six months. All of them had bad cells. A battery that alway shows a high charge rate is telling you that it is going bad. An alternator that charges all of the time will destroy the battery too.
[Modified by silvervetteman, 1:58 PM 2/10/2003]
[Modified by silvervetteman, 1:58 PM 2/10/2003]