Pre cat flange stud loose & o2 replace - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 06-07-2013, 09:39 AM   #1
Jeeper
 
Catnip 0_o's Avatar
 
Join Date: Sep 2012
Location: Warren
Posts: 99
Pre cat flange stud loose & o2 replace

2002 TJ 4.0L Hello all, I decided to replace my O2 sensors (both pre cat) yesterday because they haven't been changed in a real long time I'm sure and I have noticed a slight dip in gas mileage. When I went to install the sensors the rear O2 came out easily but the front has yet to come out, letting it soak in PB blaster for a few days.. Well while I was under there I noticed that the flange studs that hold together the precats were very loose, but I never had any codes come up on my CEL except for a large emission leak code that I got like a year ago and randomly went away, maybe this was the cause..? Regardless the studs were loose so I tightened them all and managed to get the rear o2 installed. Well when I started it up, I don't have any CEL or difference in performance but I can hear a new noise under the hood now. Almost like a puttering noise and it seems to be coming from where I tightened the studs. Has anyone else had this issue or know why I might have a noise now that I tightened the studs but before I tightened them I had no noise? Thanks

Catnip 0_o 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



logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid
» Rates
Get low rates on auto insurance in Canada!

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 10:07 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