1999 WJ 4.0 Problem - O2 sensor - JeepForum.com

 
LinkBack Thread Tools
post #1 of 5 Old 01-03-2011, 11:15 AM Thread Starter
scarrskey
Registered User
1999 WJ 
 
Join Date: Jun 2010
Location: Cameron Park
Posts: 537
Wj 1999 WJ 4.0 Problem - O2 sensor

About 6 months ago half the time I would start up my Jeep it would start to shake and have trouble getting out of first gear. After initially getting into second there would be no problems, they would only occur during startup. I decided to have my tranny checked out and flushed and there was no issues there. After a while the check engine light came on with codes P0152, P01611, and P0141 all pointing to o2 sensor problems. I had all of them replaced and the problem went away.

Now, 6 months later the problem seems to be coming back. Check engine light just came on with code P0141. I wanted to see if someone could provide some knowledge of what could be causing the trouble. Read in other forums that it could be the governor pressure sensor/solenoid. Any help would be great.

scarrskey is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 01-03-2011, 12:33 PM
Kolak
Vendor
 
Kolak's Avatar
 
Join Date: Jun 2004
Location: Phoenix, AZ
Posts: 6,245
That code points to a heater malfunction in the bank 1, sensor 2 sensor. What brand of sensor is this? It may still be under warranty.

Kolak Performance and Offroad
Member: Specialty Equipment Market Association
Telephone: 480 998-3661
kolak@aol.com or kolak@kolakperformance.com
Kolak is offline  
post #3 of 5 Old 01-03-2011, 01:39 PM
rm2001wj
Registered User
 
rm2001wj's Avatar
2001 WJ 
 
Join Date: Aug 2005
Location: Memphis, TN
Posts: 3,229
Some posts by 4.0 owners mentioned having O2 sensor problems due to a portion of the wiring harness that contacts a bolt at the rear of the engine which wears away insulation on the O2 sensor wires. I can't say exactly where to look, but it would probably be worth while to try checking that out to see if that could be your problem.
rm2001wj is offline  
post #4 of 5 Old 01-03-2011, 01:48 PM Thread Starter
scarrskey
Registered User
1999 WJ 
 
Join Date: Jun 2010
Location: Cameron Park
Posts: 537
Thanks for the replies. I will try to find out exactly which sensors were replaced and what brand they were replaced with.

Does the shifting problem seem like it would be related to the sensors?
scarrskey is offline  
post #5 of 5 Old 01-03-2011, 06:13 PM
nickblack
Registered User
1999 WJ 
 
Join Date: Dec 2010
Location: bridgewater
Posts: 739
I cannot emphasize enough the importance of using ONLY Mopar sensors on the WJ. Not just 02 sensors, all sensors. For some reason this truck is very finicky when it comes to sensors and I have encountered numerous problems with after market sensors of all kinds. Of course Mopar are more expensive, but in the long run you will save money because eventually you will buy them anyway.
nickblack is offline  
Reply

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.



Email Address:
OR

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.




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
How to change a speed output sensor on a 1999 Jeep Grand Cherokee w/pics. 99JGCWJ WJ Grand Cherokee Forum 14 08-20-2014 01:01 AM
1999 GC: idle and transmission sensor problems... Not sure what's going on! WillisW WJ Grand Cherokee Forum 7 07-19-2010 06:00 PM
How do I change a cam sensor on 1999 jeep grand cherokee lowside WJ Grand Cherokee Forum 5 05-10-2010 03:46 PM
1999 XJ stuck on oxygen sensor esco1402 WJ Grand Cherokee Forum 2 04-11-2010 07:56 PM
1999 2.5td limited Air Con problem charlcherokee WJ Grand Cherokee Forum 3 09-07-2002 06:23 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