Problems with Idle RPM way too high. - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > Problems with Idle RPM way too high.

Artec Holiday Sale!Bead Lock Wheels! Raceline, Trail Ready, & Trail-GearROCKRIDGE4WD Introduces a NEW Jeep Wrangler JK *led* tail

Reply
Unread 02-11-2012, 04:56 PM   #1
Cjonck1774
Registered User
1997 TJ Wrangler 
 
Join Date: Feb 2012
Location: Lubbock, TX
Posts: 1
Problems with Idle RPM way too high.

I've had my Wrnagler TJ for about 4 years now, and when ever it gets cold here in TX my Idle RPM's are about 1500. In trying to fix this problem I haveput on a Brand new TPS and IAC on the throttle body. After doing so the jeep now starts off Idleing fine when the engine is cold but as it warms up it will climb to close to 2000 RMP when out of gear, and when its in gear and moving it will go back down to lower RPMs until you hit that red traffic ligh and it jumps up agian. I dont know if it effects anything but it also has a AEM intake that has been there since i bought it... Again this usually only happens during the winter. Does anybody have any suggestions as to what the problem might still be?

Cjonck1774 is offline   Reply With Quote Quick reply to this message
Unread 02-11-2012, 05:01 PM   #2
tac426
Registered User
2001 TJ Wrangler 
 
Join Date: Jul 2010
Location: nashville
Posts: 13
try unhooking the battery for 10 minutes or so, then hook it back up the computer may fix it as it goes through its startup sequence.
good luck
tac426 is offline   Reply With Quote Quick reply to this message
Unread 02-11-2012, 05:03 PM   #3
Barcus
Registered User
1998 TJ Wrangler 
 
Join Date: Jun 2010
Location: Daphne, AL
Posts: 755
check the bolts on your exhaust manifold and check for any leaks in your exhaust. if you have an exhaust leak, you will idle higher. typically, if any bolts are going to be loose, they are the two closest to the firewall. when I had your problem, they were only finger tight.
__________________
[FONT="Franklin Gothic Medium"][SIZE="3"]98 TJ Currie arms-RC 2.5 coils-RC 2.0 shocks-1.25 BL-TF rear track bar-custom bumpstops-mud-scratches-gas.[/SIZE][/FONT]
Barcus is offline   Reply With Quote Quick reply to this message
Unread 02-11-2012, 05:04 PM   #4
colaman24
Registered User
1999 TJ Wrangler 
 
Join Date: Jan 2011
Location: orange park, florida
Posts: 57
Check for a vacuum leak, 2 to 3 lines come off the intake. If one gets old and cracks, it leaks am and will accelerate your rpms
colaman24 is offline   Reply With Quote Quick reply to this message
Unread 02-11-2012, 08:16 PM   #5
guy.griffin
Registered User
1999 TJ Wrangler 
 
Join Date: Sep 2006
Location: Roscoe, Illinois
Posts: 268
also check injector seals. Get some throttle body cleaner spray around injectors while its running the idle drops as your spraying than you have bad seals
guy.griffin is offline   Reply With Quote Quick reply to this message
Reply

Tags
idle , rpm , throttle body

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com 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 e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
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


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.