Check Engine warning - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 08-11-2011, 07:47 PM   #1
Newb
 
Join Date: Oct 2010
Posts: 13
Check Engine warning

I have a 2005 Wrangler Unlimited. In response to the check engine warning, my dealer replaced all 3 of my oxygen sensors. Withing 24 hours the light was back on again. Interestingly I have one of those gas tanks that spews gas on fillups due to overlflow. Any connection to a faulty tank and the check engine light?

Monty is offline   Quote Quick Reply
Old 08-11-2011, 09:12 PM   #2
I am JD & It's my Dream

WF Supporting Member
::WF Administrator::
 
JDsDream's Avatar
 
Join Date: Jan 2009
Location: The Peach State
Posts: 26,969
Images: 4
Check for leaks in your exhaust system. I had the same situation and it turned out to be a leak at the manifold.

__________________
The kind of woman that when my feet hit the floor each morning the devil says "Oh Crap, She's up!"

To All Of Our Forum Veterans and Active Service Members.
Our Debt To You Is Greater Than We Could Ever Repay.
Thank You

Become a Supporting Member!
JDsDream is offline   Quote Quick Reply
Old 08-11-2011, 09:22 PM   #3
Jeeper
 
Join Date: Jun 2011
Location: Northern NJ
Posts: 261
Most of the time a dealership's first response will be "replace the oxy sensor" -- it's simple, it makes them a pretty good piece of profit, and it MIGHT work. The light goes off because they reset the system; if it goes back on (which it won't until you're back home), the problem is still there.

Of course if it DOESN'T work it's not their fault, and they go on to replacing the next thing until maybe they cure the problem.

The light can come on from any number of things - as JD said, an exhaust leak; it also can be a cracked vacuum hose, a leaky gascap, a dirty/corroded electrical connection on one of the other sensors, an intake manifold leak, or maybe even another sensor gone flooey.

With the gas-tank overflow, I wonder -- is there any way the charcoal canister can be getting slopped with gas? There might be a sensor there, too - I know there's one on my 'Yota.

Might be worth spending the money on a diagnostic-code reader.
PeteH 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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
Check Engine light will Not blink Code Bassett99TJ TJ Tech Forum 16 01-03-2011 08:02 PM
Spark Plugs Now Check Engine Light... Jon M TJ Tech Forum 15 12-21-2010 02:43 PM
check engine, and check guages, and a bunch of codes ellman605 TJ Tech Forum 1 12-13-2010 10:37 AM
check engine light on and then off again jasonbwell TJ Tech Forum 5 03-24-2010 10:11 PM
check engine code check? jasonbwell TJ Tech Forum 10 02-04-2010 08:38 AM



» Featured Product

All times are GMT -5. The time now is 07:29 AM.



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