2000 TJ died and now stalls after being jumped - 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 04-20-2012, 05:12 PM   #1
Newb
 
Join Date: Mar 2008
Location: Laurel, Md
Posts: 10
2000 TJ died and now stalls after being jumped

My tj died on Wednesday night and wouldn't start. I had no dash lights or any lights coming on when turning the key. I jumped the car to try and get it home but the jeep would only start if your revved the engine and held the rpms above 1000. I finally got the jeep home and began testing the electrical system. The battery reads above 12 volts with the engine off so we assumed it was the alternator. I went and bought the upgraded 136 amp alternator from autozone and still have the same exact issues as before. Jeep will only start if jumped and feathering the gas pedal, but will dies if the rpm's fall below 1000. I checked and cleaned the battery terminals as well. I am getting stumped at this point. Anyone have any other ideas as the source of the problem?

Thanks in advance.

DBLee is offline   Quote Quick Reply
Old 04-20-2012, 05:27 PM   #2
Member
 
Join Date: Feb 2011
Location: Central Louisiana
Posts: 613
Well, first off...Your test of the battery only revealed half of it....

If it metered above 12 volts with engine off, then it should try to crank and all lights and accessories shoud work....12.8 volts is considered fully charged with engine off, but that's only half of it.

You had no business buying alternator before you started engine and retested battery...even if you had to jump it to start it, you should have then tested batt voltage again with it running even if you had to gas it to keep it running before buying alternator...So stop spendiong money swapping parts until you do some follw up testing.

Once running, even if you had to jump it, the readings across the batt terminals (in the center of the posts, not at terminal clamps) should meter out well above 13 VDC, up to 14.5.

If you get well above 13 VAC at center of batt terminals with engine running, then alternator is working and battery terminal clamps are tite and clean unfuff to recharge battery and start it.....If not, then shift meter probes to battery cable clamps...if the battery cable clamps show above 13VAC, then clean and tighten clamps where they attach to battery posts and if they or one is a temporary style clamp, then toss it and reattach new new clamp after cleaning and brushing cable wires to shiny clean.

There's more, but do that first

2002TJ is offline   Quote Quick Reply
Old 04-20-2012, 05:37 PM   #3
Jeeper
 
TOKKIE's Avatar
 
Join Date: Mar 2010
Location: Sonora, CA.
Posts: 414
I had my battery die in my 00 tj, jump started and would not idle. Quick post on hear and Jerry pointed out they will not idle with dead battery, trickle charge overnight and she was good to go. On another note the alternators are not internally regulated, they are controlled by the pcm, so if your not charging at 13+ does not mean it is a failed alt.
TOKKIE is offline   Quote Quick Reply
Old 04-20-2012, 05:38 PM   #4
Jeeper
 
530ktm's Avatar
 
Join Date: May 2010
Location: Southern California
Posts: 3,703
Images: 3
If the battery is weak the engine will not idle at low rpm. Also, if the terminals are dirty and bad connection, engine will not start and if jumped it will not idle. This has happened to me a couple of times and all it is is the battery terminal connections are dirty. 2002tj has good advise as well.
530ktm is offline   Quote Quick Reply
Old 04-20-2012, 05:56 PM   #5
Newb
 
Join Date: Mar 2008
Location: Laurel, Md
Posts: 10
Apologies for my ignorance and not checking the battery enough. I will give all that a try tomorrow and let you guys know how it turns out. Thanks for the help.
DBLee is offline   Quote Quick Reply
Old 04-20-2012, 05:59 PM   #6
Jeeper
 
hartattack's Avatar
 
Join Date: Jun 2011
Location: all over GOv Contractor
Posts: 370
Send a message via Skype™ to hartattack
Quote:
Originally Posted by DBLee
Apologies for my ignorance and not checking the battery enough. I will give all that a try tomorrow and let you guys know how it turns out. Thanks for the help.
On the bright side you now have a brand new alt ! Cross that part off the list for awhile
__________________
Must Go Faster!
hartattack is offline   Quote Quick Reply
Old 04-20-2012, 05:59 PM   #7
Newb
 
Join Date: Apr 2012
Location: Fort Worth
Posts: 2
Load test the battery. A battery can show adequate voltage because it is being charged but not have ANY power capacity. I have seen this happen to dry batteries and even AGM batteries that went dry.
Pkauf is offline   Quote Quick Reply
Old 04-20-2012, 06:03 PM   #8
Member
 
Join Date: Feb 2011
Location: Central Louisiana
Posts: 613
Yup, and you need to be REALLY careful right now while doing all this jumping or you WILL blow a good alternator.

Before jumping, take keys out of both cars...make whoever is assisting SHOW you his keys in his hands....And make sure vehicles are NOT touching....In other words do NOT have other car running or even ignition turned on when you connect cables or you can blow alternator diodes and not even know it till later when either or both cars won't charge.

Both cars off, not touching, now connect cables, grounds first preferbably to solid engine ground, then pos terminals, then start and rev assist car to well above idle for a few minutes before you attempt to crank yours.
2002TJ is offline   Quote Quick Reply
Old 04-21-2012, 07:12 PM   #9
Newb
 
Join Date: Mar 2008
Location: Laurel, Md
Posts: 10
So I tested my battery some more and found that in deed the battery was the culpert. Bought a new battery and the Jeep fired right back to life, just in time for a perfect Saturday cruise.

DBLee is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
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

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 Off
Refbacks are Off



logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 01:16 AM.



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