rough idle for 5 or 10 minutes... - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ 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 04-02-2008, 11:00 AM   #1
Jeeper
 
Jonny15's Avatar
 
Join Date: May 2007
Location: Dover, New Hampshire
Posts: 839
rough idle for 5 or 10 minutes...

Hey everyone, ive got something for you all to figure out. I usually garage my jeep but the past week or so i've had it with me at college. Now i let it sit for about 5 days without running it in good weather (no rain). When i got in to start it up after these 5 days it ran fine.

So i left it again this time for about 2 days of steady rain. I get in to start it up yesterday and it idled really rough. When i put it in gear it was almost about to stall until i got it over 2000 rpm, then it ran perfectly smooth. But as soon as i let off the accelerator and dropped the rpms below 2000 again it wanted to stall out on me and ran extremely rough.

This whole problem only lasted for about 5 or 10 minutes, then this problem just vanished and it ran and idled smooth as ever. I've never had this problem before but my dad who has driven it a few times has had that happen twice to him. Again my jeep is usually garaged so it never sits out overnight in the rain. My dad only drives my jeep when its snowing out, so again its back to wet weather.

I'm thinking that this problem has something to do with moisture somewhere but i dont know where. Again this problem went away within 5 to 10 minutes and it ran perfect after that. I also started up this morning after leaving it in the garage (i came home for the night) and it started up and ran just fine. It just seems to have a problem idling and running below 2000 rpms for about 5 or 10 minutes after leaving it out in rain or snow overnight.

Any ideas??

Jonny15 is offline   Quote Quick Reply
Old 04-02-2008, 12:33 PM   #2
Jeeper
 
jeeperx2's Avatar
 
Join Date: Feb 2006
Location: Des Moines, Iowa
Posts: 353
what year is it? does it have distributor?

__________________
2004 TJ
4" suspension lift
sye/TW driveshaft
NTH degree c/a
2" body lift
aussie locker
Rancho rs9000 shocks
tube bumpers
winch
33x12.50 firestone's
cold air intake
throttle body spacer
rear led's
sony MEX5DI deck
big ol amp
infinity speakers
-------------------> http://miobi.org/main.htm
--------------------> http://www.jocci.com/
jeeperx2 is offline   Quote Quick Reply
Old 04-02-2008, 01:26 PM   #3
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 32,026
Images: 2
How is your battery? A very weak battery can make the engine run roughly since the alternator can't put out its full output when the battery is very weak.
__________________
Remember that having a different opinion doesn't also require one to be a jerk when expressing it.

When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 04-02-2008, 02:12 PM   #4
Jeeper
 
Jonny15's Avatar
 
Join Date: May 2007
Location: Dover, New Hampshire
Posts: 839
The battery seems to be fine, it's never given me any problems. And yes it does have a distributor, which is the main culprit on my list of possibilities right now, as i know that if there is a crack in it somewhere and water gets in it'll run rough like that.
Jonny15 is offline   Quote Quick Reply
Old 04-02-2008, 02:26 PM   #5
Jeeper
 
Join Date: Sep 2006
Location: pahrump Nevada
Posts: 1,241
every morning I have rough Idle when I start the jeep but only for about 30-60 seconds
I have changed the throttle pos. sensors but its still there I think its the Idle air control sensor
but thats on my jeep
mr4x4 is offline   Quote Quick Reply
Old 04-02-2008, 07:34 PM   #6
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
how old are your wires? try sprayng ignition wires w/ spray bottle full of water. if it acts up after you spray wires, or you see arcing, tune up time. wouldn't be a bad idea if you haven't done it anyway.

__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave 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:
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
Runing rough, idle rough, cylinder #4 misfire spdrcrpete TJ General Discussion Forum 13 06-02-2008 01:32 PM
Rough Idle BIG DAVE TJ Tech Forum 4 05-30-2008 09:14 PM
4.2 rough idle and stalling problem truemainer150 YJ Tech Forum 9 04-12-2008 05:10 PM
rough idle spanky TJ Tech Forum 9 04-08-2008 04:25 PM
I noticed rough idle after lift. bpowa TJ Tech Forum 11 07-31-2007 12:13 AM



» Featured Product

All times are GMT -5. The time now is 12:25 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