very low idle then dies. -
LinkBack Thread Tools
post #1 of 4 Old 05-20-2010, 10:59 PM Thread Starter
Registered User
2004 TJ Wrangler 
Join Date: Jul 2008
Location: Scranton PA
Posts: 22
very low idle then dies.

I have a 2004 wrangler unlimited (LJ) with a 4.0 and just today out of the blue.... On the first crack all the gauges on the cluster maxed out then came back with no starter... tried again and got it to crank for 5 seconds with no start. after a few cranks it started. I gassed it. rpm's rose. when i released accelerator it just dropped off again. next start it would idle at around the first dot above zero. and move slightly up and down then die after awhile or if i hit the gas and let it go it seems like the engine just lets it fall and die. beside the idle it seems to run fine i just need to keep the engine running with a little gas applied. this is the only problem i have ever had with my jeep. i did not recently get gas. The only think that worries me is the way the gauges seemed to freak out the first time then the problem started.

Thanks for the help in advance.

failure2stop is offline  
Sponsored Links
post #2 of 4 Old 05-20-2010, 11:06 PM
Registered User
2005 TJ Wrangler 
Join Date: Jul 2007
Location: Charleston
Posts: 724
hmm.. check the battery and make sure your wires from the alternator are secure and nothing is shorting out to the body.
Could be that you're losing power from your alternator somewhere.
Check your battery is 12v. If you have a voltmeter you can check that your alt. is up to spec.
ohtenwillys is offline  
post #3 of 4 Old 05-21-2010, 06:59 AM
Registered User
robncar's Avatar
2005 TJ Wrangler 
Join Date: Nov 2005
Location: La Verne
Posts: 8,492
Does it throw any codes? Once you check the battery and connections as recommended above, you may want to clean the throttle body and IAC (I-dle A-ir C-ontroller). The IAC is responsible for maintaining idle.
robncar is offline  
post #4 of 4 Old 05-21-2010, 09:22 AM
Registered User
1997 TJ Wrangler 
Join Date: May 2010
Location: Milford, CT
Posts: 176
I would have to second the alternator. My old car, a Nissan maximal same systoms and it was the alternator
calabrate2 is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


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

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
200 RPM idle and dies, 4.0L chainsaw620 TJ Wrangler Technical Forum 17 11-11-2009 07:07 PM
carb on 4.2 dies at idle 90yjdude YJ Wrangler Technical Forum 13 09-28-2009 01:18 PM
Help! 4.0 dies when in idle 4LiterFury2010 TJ Wrangler Technical Forum 2 08-17-2009 03:15 PM
88 almost dies when idle pgatherum YJ Wrangler Technical Forum 15 08-04-2008 06:12 PM
need help jeep won't idle just dies damian H YJ Wrangler Technical Forum 5 06-17-2007 07:06 PM

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