2003 WJ Voltage around 29 volts at battery.. - JeepForum.com
 
LinkBack Thread Tools
post #1 of 8 Old 07-22-2014, 08:30 PM Thread Starter
afearlesshunter
Registered User
2003 WJ 
 
Join Date: Jul 2014
Location: Greenfield
Posts: 64
2003 WJ Voltage around 29 volts at battery..

I installed a new subwoofer amplifier in my new to me 2003 Wj with the 4.7l v8 and I noticed the amp was getting hot quickly. Tonight I checked my voltage (With the jeep running) and it read 29.2 volts.. What would cause this? is this normal?

afearlesshunter is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 07-22-2014, 08:32 PM
bessyboy
Registered User
2001 WJ 
 
Join Date: Apr 2013
Location: livonia
Posts: 358
That's impossible, your whole car would fry in a second!

-2001 WJ Limited, 4.7L V8, Thrush Glasspack muffler dumped before axle(no tailpipe), Spectra CAI,
Rusty's 2" BB
bessyboy is offline  
post #3 of 8 Old 07-22-2014, 08:34 PM Thread Starter
afearlesshunter
Registered User
2003 WJ 
 
Join Date: Jul 2014
Location: Greenfield
Posts: 64
I am very puzzled. I have a voltage meter installed in the inside 12v outlet that consistently reads 13.5-13.6v but on the battery terminals i get 29 something ..
afearlesshunter is offline  
post #4 of 8 Old 07-22-2014, 08:38 PM
bessyboy
Registered User
2001 WJ 
 
Join Date: Apr 2013
Location: livonia
Posts: 358
What does the gauge on the dash read?

-2001 WJ Limited, 4.7L V8, Thrush Glasspack muffler dumped before axle(no tailpipe), Spectra CAI,
Rusty's 2" BB
bessyboy is offline  
post #5 of 8 Old 07-22-2014, 08:38 PM Thread Starter
afearlesshunter
Registered User
2003 WJ 
 
Join Date: Jul 2014
Location: Greenfield
Posts: 64
Nvm im retarded . sorry guys.
afearlesshunter is offline  
post #6 of 8 Old 07-23-2014, 02:54 AM
5-90
Registered User
 
5-90's Avatar
1988 XJ Cherokee 
 
Join Date: Sep 2006
Location: San Jose, CA
Posts: 5,344
Quote:
Originally Posted by afearlesshunter View Post
I installed a new subwoofer amplifier in my new to me 2003 Wj with the 4.7l v8 and I noticed the amp was getting hot quickly. Tonight I checked my voltage (With the jeep running) and it read 29.2 volts.. What would cause this? is this normal?
You have a major problem.

However, is it a major problem with your charging system (29.2VDC is FAR too high for a 12V system!) or with the meter you used to check it?

Verify it with a second DMM.

Nominal voltage for automotive systems is 12.0VDC. Typical battery voltage is 12.4-13.0VDC, typical running system voltage is slightly higher (12.8-14.0VDC.) More than 14.0VDC is a problem, and engine running system voltage should always be higher than resting battery voltage, typically by at least 0.25V.

You can find a writeup I've posted on testing primary electrical components here, but make sure your DMM is properly calibrated and reading correctly first...

"recon" (sic - reckon)(tm) "hihgly"(tm) "seceed"(tm)
"Outback AIDS - Alcohol-Induced Dizzy Spells"
5-90 is offline  
post #7 of 8 Old 07-23-2014, 03:23 AM
MadderThanMax
Registered User
2001  
 
Join Date: Oct 2011
Location: Glasgow
Posts: 2,416
Wow! 29v that's Impressive... I guess you won't be posting on the HID light thread as yours will be jumping out they're sockets... Nice!
MadderThanMax is offline  
post #8 of 8 Old 07-23-2014, 06:08 AM
BIGBADWOLF
Registered User
2004 WJ 
 
Join Date: Aug 2012
Location: Charlotte
Posts: 719
If was 29 vdc at battery you would have to wear a gas mask. The hydrogen sulfide would either asphyxiate you or cause an explosion!
BIGBADWOLF is offline  
Reply

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.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome