Battery Drain!! Going Crazy!! - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > Battery Drain!! Going Crazy!!

Savvy/Currie Aluminum Control ArmsROCK BOTTOM prices on LIFT KITS at Rockridge4wd!! WANT TO December Specials at Jeephut.com

Reply
Unread 07-17-2013, 11:25 AM   #1
CityMoto
Registered User
 
Join Date: Feb 2011
Location: Harrisonburg, VA
Posts: 3
Battery Drain!! Going Crazy!!

Hello all! I am a small independent dealer in VA. I specialize in Wranglers. I have sold a lot of Jeeps and of course have owned several and love them!
I now have a Jeep that has me very puzzled! This is a 2004 Rubicon. It is a 5 speed and has small lift. It only has 54,xxx miles on it. It WILL NOT hold a charge. The battery will last for about 2 day and then is as dead as a stick!! Again, I have been selling Jeeps for about 15 years. This one has me stumped. I have had several techs look at this with me. No one can figure it out. Here is what I have done so far.....
Took meter to battery and removed every fuse one at a time looking for a spike. Did the same for every relay. Replaced alternator. Replace battery twice with new battery. Took battery out of another jeep in stock and swapped, the battery performed well in the other Jeep. Replaced AIC. Swapped starter to another Jeep.
NOTHING WORKED!! Please help guys! I am considering a new Engine Computer (PCM/ECM/ECU) from All Computer Resource inc. If this is the next step, has anyone installed a new PCM?
Thanks in advance for your help!

CityMoto is offline   Reply With Quote Quick reply to this message
Unread 07-17-2013, 11:44 AM   #2
Ferrachi
Registered User
2003 TJ Wrangler 
 
Join Date: Jan 2012
Location: , MN
Posts: 414
Is there aftermarket lighting, winch, etc? I had the same problem on a RZR and it turned out to be a faulty aftermarket light. Otherwise, I would be looking for draws with my multimeter, as it sounds you're already doing that. Hopefully someone else will chime in.
Ferrachi is offline   Reply With Quote Quick reply to this message
Unread 07-17-2013, 12:42 PM   #3
CityMoto
Registered User
 
Join Date: Feb 2011
Location: Harrisonburg, VA
Posts: 3
No aftermarket equipment.... Thanks anyway... hopefully someone with know something lol
CityMoto is offline   Reply With Quote Quick reply to this message
Unread 07-17-2013, 12:48 PM   #4
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California, California
Posts: 60,882
What type of meter are you using to look for that 'spike'? If you're using a volt meter, that won't happen. You're looking for an amperage draw 'spike' which can only be detected by an amp meter inserted in series with either battery connection.

Remove all the fuses, then insert the amp meter in series with one of the battery leads. Installing certain fuses will cause an immediate small battery drain like those that provide power to the ECM and clock radio. Look for an amperage jump from different circuits from those.

Did the previous owner install anything like a big stereo amp, a battery isolation relay, etc.?
__________________
Getting Savvy...

Coolest offroad magazine ever! CRAWL Magazine

When you have a choice, buy American.


TJ
HOLIDAY THEMED GIVEAWAY!
Jerry Bransford is offline   Reply With Quote Quick reply to this message
Unread 07-17-2013, 03:37 PM   #5
CityMoto
Registered User
 
Join Date: Feb 2011
Location: Harrisonburg, VA
Posts: 3
We used a multimeter. It was looked at my to other ASE techs. I am not sure what they used but the last one narrowed it down to the IAC or the ECU. We replaced the IAC and 2 days later the Jeep was dead again. I am afraid we are down to the ECU unless there are other ideas. There was no aftermarket stereo. Thanks for you info.... any other advise??
CityMoto is offline   Reply With Quote Quick reply to this message
Unread 07-17-2013, 03:41 PM   #6
Jerry Bransford
Administrator
 
Jerry Bransford's Avatar
2004 TJ Wrangler 
 
Join Date: Jan 2003
Location: Escondido, California, California
Posts: 60,882
Yep, make sure your tech knows how to use a multimeter and its amp meter function. If he just used the volt meter, it wouldn't have helped. Multimeters include a volt meter, amp meter, and ohm meter.
__________________
Getting Savvy...

Coolest offroad magazine ever! CRAWL Magazine

When you have a choice, buy American.


TJ
HOLIDAY THEMED GIVEAWAY!
Jerry Bransford is offline   Reply With Quote Quick reply to this message
Unread 07-17-2013, 03:53 PM   #7
1HUNTS69
Registered User
2004 LJ Wrangler 
 
Join Date: Oct 2010
Location: , NEW JERSEY
Posts: 21
Had the same issue for about three months, dumb as it sounds come to find out the under the hood light was coming on. My jeep is not my daily driver one night after I came home from work saw a glow under my jeep looked under to see the light on disconnected it never a problem since.
1HUNTS69 is offline   Reply With Quote Quick reply to this message
Unread 07-21-2013, 09:21 PM   #8
PhulesAu
Registered User
1985 VJ 
 
Join Date: Jun 2006
Location: Texas Gulf Coast
Posts: 1,928
Optima instruction state that KEY OFF drain should be about 25 mA , 100 mA is considered "excessive".
PhulesAu is offline   Reply With Quote Quick reply to this message
Unread 07-21-2013, 09:52 PM   #9
AtomicDog
Registered User
2004 TJ Wrangler 
 
Join Date: Jan 2012
Location: Oak Ridge, TN
Posts: 158
Connect an ammeter to the battery and cable then disconnect the cable. You want to see the draw when everything is in the normal off state. The other option is to connect the ammeter between the battery and cable then let it settle down. The hood light is a good item to check. Just disconnect it if nothing else. If there's a drain on the battery you will see it on the ammeter. Pulling fuses works if you can see the drain and want to see what pulled fuse makes it go away. Kind of the opposite of a spike.
__________________
Warranty and customer service won't matter if your equipment fails during a zombie attack.
Torture numbers long enough and they'll tell you what you want to hear.
cq cq KI4DOG
AtomicDog is offline   Reply With Quote Quick reply to this message
Unread 07-21-2013, 09:59 PM   #10
MoparMech
Registered User
1995 XJ Cherokee 
 
Join Date: Jul 2013
Location: GRAND FORKS, North Dakota
Posts: 87
You might have to disconnect every module that is on the bus. But if your tech narrowed it down to the PCM. I would replace the pcm. I'm a Chrysler certified tech and It pisses me off when the managers don't listen to us. So listen to your techs.
MoparMech is offline   Reply With Quote Quick reply to this message
Unread 09-20-2013, 03:04 PM   #11
jtholst66
Registered User
1990 YJ Wrangler 
 
Join Date: Sep 2012
Location: Jupiter, FL
Posts: 24
I'm having the same problem. Brand new battery and brand new battery cables. Alternator checks out fine. I disconnected the negative battery cable and measured 12.75V from negative post to negative cable. Then, I started pulling fuses and measured the voltage after each pull. I noticed voltage drops on the radio and MSFW fuses, With all fuses out, I read around 3.1V, is that normal with all fuses pulled out? When I started putting the fuses back in, the MSFW fuse caused the voltage to jump to a 9+. Took that back out. The radio fuse caused a jump to 12.75V. Same with the Access 2 fuse and ASD fuse. It takes 2-3 days of absolutely no driving for my battery to drain. Any idea what is going on? I was hoping I would be able to narrow this down to a single circuit but this method made me more confused!
jtholst66 is offline   Reply With Quote Quick reply to this message
Reply

Tags
battery , dead battery

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.