Check Engine & Maintenance Required Light - Page 2 -
LinkBack Thread Tools
post #16 of 17 Old 11-16-2001, 02:19 AM
Registered User
2005 TJ Wrangler 
Join Date: Oct 2001
Location: Alabama
Posts: 165
Hey I had the same problem. Bought my Jeep and the idiot light (Maint Required) Light was on. Drove the wife nuts. After researching this subject, courtesy this forum, I determined nothing was wrong. Its a automatic light. Comes on at a predetermined mileage. Older Jeeps (pre 91) had a mechanical sensor located near the accelerator pedal. Jeeps strating at 91 had it built into the computer. If your Jeep is running ok and passes emissions dont waste your money, forget about replacing the O2 sensor. Just unscrew the 2 screws that hold the cover for the warnig light panel and remove the Bulb. Trust me it works. If the o2 sensor is going bad you will know it. You will lose power at highway speeds and the engine will run like crap.

"If It Aint Broke, Fix It Till It Is!!!!!"
05 TJ Rubicon, 4.0L, 6 Speed.
07 Ram 1500 Quad Cab
Sarge37 is offline  
Sponsored Links
post #17 of 17 Old 11-16-2001, 08:45 AM Thread Starter
Registered User
Join Date: Aug 2001
Location: Westland, MI
Posts: 148
Well the engine is running like crap and I'm assuming its the o2 sensor becasue everything else seems to be in working order and the sensor is original. I also can smell some unburned fuel in my exhaust which leads me to believe the engine is running a little rich. So if the sensor doesn't solve the problem then I'll be back to ask more questions. Thanks to everyone for all the advice

1992 YJ, 2.5L 4-banger, 2" Lift, 31x10.5 BFG Mud Terrain, K&N Filter, Restrictor Removed, Hi-Lift, Custom bumpers, More to come...
JeeperJay is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


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
maintenance required light onlyjeep YJ Wrangler Technical Forum 18 09-19-2009 08:46 PM
maintenance required light please help slmcook YJ Wrangler Technical Forum 10 02-26-2005 07:37 PM
Maintenance required light came on? DevilDogJeep YJ Wrangler Technical Forum 9 01-07-2005 12:34 AM
Help...maintenance required light a204600 YJ Wrangler Technical Forum 7 01-04-2005 03:25 PM
Maintenance Required and Check Engine light are on!?! b33r00 YJ Wrangler Technical Forum 5 02-09-2003 07:32 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