2000 TJ 4.0L Idling Issues - JeepForum.com
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 > General Technical Discussions > Engines & Drivetrain > 2000 TJ 4.0L Idling Issues

FS: Jeep Fog Light LED Bulbs! Several Brightness Options! Stainless Steel Door Hinge PinsPoly Door Hinge Bushings

Unread 10-14-2013, 07:24 PM   #1
Registered User
2010 JK Wrangler 
Join Date: Dec 2006
Location: N.E. Oakland County, Michigan
Posts: 257
2000 TJ 4.0L Idling Issues

My engine has 130k miles and it is starting to idle fast on its own. It will reach normal operating temp and idle nice and smooth. Then, it will take off and rev high for 60 seconds or more.

A co-worker stated the engine controller may have cracked soldering that is causing poor idle.

Has anyone experienced any of this?

Goose346 is offline   Reply With Quote
Unread 10-15-2013, 03:29 AM   #2
Registered User
1992 XJ Cherokee 
Join Date: Oct 2012
Location: umatilla, florida
Posts: 1,960
Try taking it to autozone have them check for codes. Sounds like a bad sensor
uberxj92 is offline   Reply With Quote
Unread 10-15-2013, 12:09 PM   #3
Registered User
Join Date: Jul 2013
Posts: 13
I agree check the crankshaft sensor, just a thought.
pstewart is offline   Reply With Quote

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.