Starting/Battery Problem - Update - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 07-07-2007, 09:53 PM   #1
Newb
 
Join Date: Jul 2007
Posts: 5
Starting/Battery Problem - Update

Hello All,
I wrote earlier about a strange problem with my Wrangler where the battery appeared to be very low and the ignition lights would not come and after I got it started with a jump it would not stay running without giving it gas.

I just tried to do some more diagnostic work on it and something really strange happened - a light came on when it was running that said check gauges. I looked at the voltmeter and it was pegged to the right at 19+ volts! I cycled the key off then back on and the engine died - no ignition lights - no power to the starter - and not even a small charge to the battery.

If this were my 69 Camero I would think that the ignition slide switch in the steering column was messed up - but I don't know if this 97 Wrangler has a slide switch that the ignition cylinder actuates. I now think the idle circuit is electircally controlled and I am not getting any juice to that circuit because of the Ignition Circuit.

Any thoughts or suggestions would be greatly appreciated.

Mikes97wrangler is offline   Quote
Old 07-08-2007, 12:38 AM   #2
Drives by Braille

WF Supporting Member
 
AzTJ's Avatar
 
Join Date: Dec 2006
Location: For-8-Oh!
Posts: 13,631
if the alternator is overcharging the batter(more than 14volts) it will fry the battery and kill. And if its pushing out that many volts, it looks like its the regulator... and sadly its built into the PCM.

I don't know what your ignition would have anything to do with it.

AzTJ is offline   Quote
Old 07-08-2007, 08:33 AM   #3
Jeeper
 
Scotty355's Avatar
 
Join Date: Aug 2006
Location: Freeland Pa.
Posts: 529
Did you get the battery checked yet? The charging system may try to compensate for a dead/shorted out battery.
At an idle the charging is at it's lowest and there might not be enough juice to run the computer, ignition , all electrical and charge battery therfore no run at idle.
At higher rpm the alt is putting out enough juice to run everything and try to charge battery which may explain the high voltage.
__________________
2006 unlimited, 2"BB, JKS disconnects, 33" BFG at
1996 Harley Davidson XL1200c
Scotty355 is offline   Quote
Old 07-13-2007, 08:01 PM   #4
Newb
 
Join Date: Jul 2007
Posts: 5
Starting/Battery Problem - Fixed!

It was the battery. It had a dead cell and only producing 10 volts. A new battery fixed the problem. It looks like my 69 Camero experience does not apply to a vehicle that has a computer. Not enough voltage was being produced at idle to keep the regulator working and therefore the entire ignition system. Fortunately I did check the battery as recommended instead of just replacing the PCM - at a price that would make Bill Gates envious!

Thanks for the help.
Mikes97wrangler is offline   Quote
Reply

Thread Tools

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
check engine light came on and speedo stopped working @ the same time. eric TJ General Discussion Forum 14 10-14-2013 12:05 PM
05 tj rattle problem fixed. JeepGuyLJ TJ General Discussion Forum 2 05-25-2011 01:00 PM
2400 miles on new jk having trans problem NTJeep JK Tech Forum 4 01-14-2009 01:03 AM
Shifting Problem lonerider6 YJ Tech Forum 6 06-01-2008 03:51 PM
Starting/Battery Problem? Mikes97wrangler TJ Tech Forum 6 07-06-2007 08:44 PM



Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 06:40 AM.


User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC