rough idle and stalling - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 02-14-2011, 12:38 PM   #1
Jeeper
 
Join Date: Jan 2011
Posts: 112
Cool rough idle and stalling

Hey...im getting closer to figuring it out.my 2.5 l wrangler runs great till I turn on the headlights then it starts running rough and sometimes stalls when u push the clutch in. Then I turn headlights of and it clears up.sounds electrical to me but what?

kylep is offline   Quote Quick Reply
Old 02-14-2011, 01:27 PM   #2
Jeeper
 
Undead-89's Avatar
 
Join Date: Feb 2011
Location: Loveland, CO
Posts: 760
Bad Alternator, can't keep up with the current draw. Maybe also loading the engine if it has bad bearings.

Bad Battery,possibly but the Alternator should compensate.

The only other thing I can think of is a short to ground in the Headlight wiring that is drawing a ton of current when the lights are on.

Undead-89 is offline   Quote Quick Reply
Old 02-14-2011, 02:32 PM   #3
Jeeper
 
Join Date: Jan 2010
Location: Las Cruces, NM
Posts: 2,291
x-2
__________________
2013 WRANGLER SPORT 2 DR., V-6 ,AUTO,HARD TOP
(Sold)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights
Garyk is offline   Quote Quick Reply
Old 02-14-2011, 02:38 PM   #4
Jeeper
 
Join Date: Jan 2011
Posts: 112
Thanks I will start with battery and go from there.
kylep is offline   Quote Quick Reply
Old 02-14-2011, 02:42 PM   #5
Jeeper
 
Join Date: Jan 2011
Posts: 112
Im open for other suggestions to.couldn't figure out what was wront till I sat and thought long and hard after driving in the daylight all weekend and when it got dark it started again.I usuall only drive at nite caus I work so late.
kylep is offline   Quote Quick Reply
Old 02-14-2011, 02:54 PM   #6
Newb
 
Join Date: Feb 2011
Posts: 2
My 88 does the exact same thing. If you locate the problem please post it...Thanks
gweagley is offline   Quote Quick Reply
Old 02-14-2011, 03:09 PM   #7
Jeeper
 
Join Date: Jan 2011
Posts: 112
Have u checked out any electrical stuff
kylep is offline   Quote Quick Reply
Old 02-14-2011, 03:27 PM   #8
Jeeper
 
Join Date: Jan 2011
Posts: 112
By the way does urs feel like it starving for fuel when u take off when its at a rough idle
kylep is offline   Quote Quick Reply
Old 02-15-2011, 09:24 AM   #9
Jeeper
 
Join Date: Jan 2011
Posts: 112
Battery and alternator tested good.only other thing I could think of is the voltage regulator such is inside the alt.im going to get it fixed wednesday.
kylep is offline   Quote Quick Reply
Old 02-15-2011, 11:42 AM   #10
Newb
 
Join Date: Feb 2011
Posts: 2
rough idle

Yes it acts like it is starving for fuel. It doesn't do it every time. However it will sometimes act up with just the parking lights on.
gweagley is offline   Quote Quick Reply
Old 02-16-2011, 12:50 PM   #11
Jeeper
 
Join Date: Jan 2011
Posts: 112
I had alt and batt tested.I took alt to a specialist and he said nothing was wrong.I may try a new light switch.if u try 1before I do let me no.my wife is pisses im spending so much time on it.they bout 10 bucks I think
kylep is offline   Quote Quick Reply
Old 02-16-2011, 01:07 PM   #12
Jeeper
 
Undead-89's Avatar
 
Join Date: Feb 2011
Location: Loveland, CO
Posts: 760
Also check the Ground cable from the battery to the engine.
Undead-89 is offline   Quote Quick Reply
Old 02-16-2011, 01:26 PM   #13
Jeeper
 
Join Date: Jan 2011
Posts: 112
The post is loose but wouldn't think it would cause rough idle.but sure will do thanks
kylep is offline   Quote Quick Reply
Old 02-16-2011, 02:30 PM   #14
Jeeper
 
Join Date: Jan 2011
Posts: 112
All is good.ground to block is tight
kylep is offline   Quote Quick Reply
Old 02-17-2011, 07:27 PM   #15
Jeeper
 
Join Date: Jan 2011
Posts: 112
Question rough idle and stalling with headlights on

Rough idle when headlights on.battery and alt check out good.PLEASE HELP!!!!!
kylep is offline   Quote Quick Reply
Old 02-18-2011, 02:20 PM   #16
Jeeper
 
Join Date: Jan 2010
Location: Las Cruces, NM
Posts: 2,291
If the charging system checks out OK, I'd look at the headlights, start with the switch, it may be bad and drawing more than alternator can provide. I believe in these jeeps the switch carries the whole load and there is no relay.....Does the switch get hot?
__________________
2013 WRANGLER SPORT 2 DR., V-6 ,AUTO,HARD TOP
(Sold)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights
Garyk is offline   Quote Quick Reply
Old 02-21-2011, 09:43 AM   #17
Jeeper
 
Join Date: Jan 2011
Posts: 112
Don't think it does.I will replace it and see what hapens
kylep is offline   Quote Quick Reply
Old 02-24-2011, 07:24 PM   #18
Jeeper
 
Join Date: Jan 2011
Posts: 112
Headlight switch didn't fix it
kylep is offline   Quote Quick Reply
Old 02-24-2011, 07:42 PM   #19
Jeeper
 
Jeepin91YJ's Avatar
 
Join Date: Jan 2011
Location: Colorado Springs
Posts: 138
Images: 1
Do you have a volt/ohm meter?
Jeepin91YJ is offline   Quote Quick Reply
Old 02-25-2011, 11:03 AM   #20
Jeeper
 
Join Date: Jan 2011
Posts: 112
No but I can get 1
kylep is offline   Quote Quick Reply
Old 02-25-2011, 11:04 AM   #21
Jeeper
 
Join Date: Jan 2011
Posts: 112
Volt meter in jeep doesn't act up when it acts up

kylep 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Common stalling problem-any ideas? frankfarrell@hotmail.com TJ Tech Forum 8 09-21-2013 06:02 AM
Very Low idle..... 97'wrangler TJ Tech Forum 21 11-10-2012 07:42 PM
Recently developed rough idle and stall '87 YJ w/i6 Hardwater Kiter YJ Tech Forum 0 08-24-2010 08:53 PM
Idle/Cut out - A/C causes stalling or rise in idle speed britcay YJ General Discussion Forum 2 10-03-2009 11:33 AM
4.2 rough idle and stalling problem truemainer150 YJ Tech Forum 9 04-12-2008 05:10 PM



» Featured Product

All times are GMT -5. The time now is 06:14 PM.



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