Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 12-15-2010, 08:37 PM
Member
 
Join Date: Jun 2009
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1912
setter91 is on a distinguished road
Battery Dying

Hope you guys can give me a little help. For the last couple of weeks, the battery on my 06 WK 3.7 needs to jumped. I've taken the battery in when it was dead and it tested fine and held a charge. That would leave me to beleive the alternator was bad. Every time I check the battery it is showing anywhere from 14.3 to 14.7. I took it back to Carmax who had it for 3 days and everything was fine. Any ideas?
__________________

__________________
Reply With Quote
  #2  
Old 12-15-2010, 09:06 PM
Scottina06's Avatar
JeepGarage Founder
My Jeep: 2014 6.4L SRT8 WK2
 
Join Date: May 2009
Location: Berea, Kentucky
Posts: 48,859
Thanks: 835
Thanked 825 Times in 636 Posts
Rep Power: 7717444
Scottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond repute
Garage
Re: Battery Dying

Quote:
Originally Posted by setter91 View Post
Hope you guys can give me a little help. For the last couple of weeks, the battery on my 06 WK 3.7 needs to jumped. I've taken the battery in when it was dead and it tested fine and held a charge. That would leave me to beleive the alternator was bad. Every time I check the battery it is showing anywhere from 14.3 to 14.7. I took it back to Carmax who had it for 3 days and everything was fine. Any ideas?

...could be a slow draw? Have you added anything electrical?
__________________

__________________
SCOTT
The HARDER you work...the LUCKIER you are!
2014 REDLINE red Jeep SRT "BLOODIED Edition" 1 of 1
Previous JEEP rides-
2013 Jeep Grand Cherokee SRT-deep cherry
2013 JKU 10th anniversary-white
2006 Jeep Grand Cherokee Laredo-inferno red



Twitter-The_Jeep_Guy
Instagram-thejeep_guy

Reply With Quote
  #3  
Old 12-15-2010, 09:12 PM
Long Live the Graphite Ghost

 
Join Date: May 2009
Posts: 13,409
Thanks: 55
Thanked 132 Times in 114 Posts
Rep Power: 542575
robpp has disabled reputation
Re: Battery Dying

i think we have seen this before. the battery TESTS GOOD but it truly isnt GOOD under load. if that the original battery its time for a new one.
__________________
Reply With Quote
  #4  
Old 12-15-2010, 09:25 PM
Member
My Jeep: 2006 5.7L WK
 
Join Date: Oct 2010
Posts: 397
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 30076
thex2 has a reputation beyond reputethex2 has a reputation beyond reputethex2 has a reputation beyond reputethex2 has a reputation beyond reputethex2 has a reputation beyond reputethex2 has a reputation beyond reputethex2 has a reputation beyond reputethex2 has a reputation beyond reputethex2 has a reputation beyond reputethex2 has a reputation beyond reputethex2 has a reputation beyond repute
Re: Battery Dying

Find a local auto shop that'll test your battery, starter and alternator for free. If those all check out, maybe it's corrosion between the battery and the leads? Post back, let us know when you figure it out.

EDIT: actually, if it starts with a jumper every time, then it's something with the battery or connection. Like robpp said, it could be bad when it's under load... depending on what type of battery test has already been done on it, you may already have the answer to that question. If it tests fine under load, then it's probably corrosion between the leads and the battery nipples.
__________________
White Chocolate is my hero: http://img26.imageshack.us/img26/470/epickz.png
Reply With Quote
  #5  
Old 12-17-2010, 08:17 PM
Member
 
Join Date: Jun 2009
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1912
setter91 is on a distinguished road
Re: Battery Dying

Thanks guys...the battery is less than a year old. In fact it is the second one that was replaced under warranty by Sears. It is to the point now where it only starts with a jump. I'm taking the battery back to Sears in the morning for testing. It they say it's good, back to the shop to figure out...again.
__________________
Reply With Quote
  #6  
Old 12-17-2010, 11:12 PM
fivespeed6's Avatar
Member
My Jeep: 2012 6.4L WK2
 
Join Date: Nov 2010
Location: East Coast
Posts: 195
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 1560
fivespeed6 is on a distinguished road
Re: Battery Dying

After the additional info about it being the second battery replaced, it looks to be like an issue with your alternator.

And if it is an issue with the alternator, most likely that has ruined the "new" battery to some extent.

Have you tested the voltage with the engine running?
__________________
Reply With Quote
  #7  
Old 12-18-2010, 01:43 AM
2005JGC's Avatar
Senior Member


My Jeep: 2005 4.7L WK
 
Join Date: Nov 2010
Location: Portland, OR
Posts: 2,751
Thanks: 51
Thanked 69 Times in 58 Posts
Rep Power: 1652922
2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute2005JGC has a reputation beyond repute
Re: Battery Dying

Quote:
Originally Posted by fivespeed6 View Post
Have you tested the voltage with the engine running?
Quote:
Originally Posted by setter91 View Post
Every time I check the battery it is showing anywhere from 14.3 to 14.7.


its alreadly all pretty much been hit... either another bad battery or you have a draw. I know for a time there was a draw cause by software keeping the sunroof module alive killing the batter... I dont know where that tsb went to to reference.

charge the battery up good, pull the negative battery cable off and use and ammeter from the post to the battery cable... you want the vehicle to fall asleep and be in the .020-.050 or so amps (20-50 milliamps). If it doesnt, start pulling fuses until it drops to where it should be, that will tell you the circuit to trace down and inspect.... or take it to a shop and they will do this all for you
__________________

__________________
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
HELP!!! Battery acid 08Hemi Troubleshooting/Problems Discussion 7 10-17-2010 02:22 PM
Battery jeepnjeep Grand Cherokee - WK 3 10-04-2010 01:13 PM
Battery Died Megatron Grand Cherokee - WK 7 09-14-2010 07:07 PM
Best WK battery? AcidCold Visual Modifications 37 06-25-2009 06:24 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 05:38 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community