E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 07-18-2011, 12:03 PM   #1
UGuideme
Registered User
 
Join Date: Mar 2011
Location: NYC
Posts: 17
My Ride: 2001 325i
02 Sensor

Okay, Folks; I recently replaced the Pre-catalyst sensors and one of them is leaking exhaust. I place anti-seize to it and I torque it and am still having this issue. Suggestions Please!
UGuideme is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 07-18-2011, 12:14 PM   #2
Zchild
Registered User
 
Join Date: Mar 2006
Location: Columbia, Maryland
Posts: 1,774
My Ride: 2000 BMW 3XXi ZSP
Did you possibly strip the thread when you removed the old O2 sensor. If you did you will have to retread the socket. Just my two and a half cents worth...
__________________
V/R Zachary Pullins Sr.
National Capital Chapter BMWCCA
NCC Member Recognition Chairman
NCC High Performance Driving School Back-Up Registrar
NCC Auto-X BOD Liaison
DIY Senior Committee Coordinator
2006 E90 325Xi & 2000 E46 3XXi
" Vision without resources is just hallucination"
Zchild is offline   Reply With Quote
Old 07-18-2011, 12:40 PM   #3
UGuideme
Registered User
 
Join Date: Mar 2011
Location: NYC
Posts: 17
My Ride: 2001 325i
Cool in the manifold? "retreading" Its cheaper then buying a used Exhaust manifold. This calls for a job for El Shop!
Hey thanks Zchild
UGuideme is offline   Reply With Quote
Old 07-18-2011, 12:52 PM   #4
Zchild
Registered User
 
Join Date: Mar 2006
Location: Columbia, Maryland
Posts: 1,774
My Ride: 2000 BMW 3XXi ZSP
Cool

Quote:
Originally Posted by UGuideme View Post
Cool in the manifold? "retreading" Its cheaper then buying a used Exhaust manifold. This calls for a job for El Shop!
Hey thanks Zchild
No problem comrade, I had the same problem and had to rethread the O2 sensor threading because I waited too long to change my O2 sensors and one of them had rusted in place.
__________________
V/R Zachary Pullins Sr.
National Capital Chapter BMWCCA
NCC Member Recognition Chairman
NCC High Performance Driving School Back-Up Registrar
NCC Auto-X BOD Liaison
DIY Senior Committee Coordinator
2006 E90 325Xi & 2000 E46 3XXi
" Vision without resources is just hallucination"
Zchild is offline   Reply With Quote
Old 07-18-2011, 01:01 PM   #5
dmax
Registered User
 
dmax's Avatar
 
Join Date: Aug 2006
Location: NJ
Posts: 22,657
My Ride: '99 328i 1.04646 mu
Quote:
Originally Posted by UGuideme View Post
Okay, Folks; I recently replaced the Pre-catalyst sensors and one of them is leaking exhaust. I place anti-seize to it and I torque it and am still having this issue. Suggestions Please!
I don't know how experienced at working on cars you are...I'm not a mechanic, but play one here at times!

Anyway, I haven't done this for a long, long time, but there's a crush washer on the sensor, I'm sure...don't know if that comes on it (which I assume it does), but maybe small chance it didn't...or someone took it off...or maybe the old one might have been seized on and you didn't get it off?

Not sure if you scraped, cleaner area it came from, but it wouldn't take a lot to leak from there.

I don't know the torque, but feel for an issue with it being stripped before you try to make it tighter...and you know to keep the anti-seize away from the sensor, right?

If rethreading, then I suspect helicoil is okay, but time sert is probably better...not an impossible diy, but it's probably cheaper at good shop than buying the kit!

HTH
__________________


dmax on the radio--answering all your car questions as best I can!
watsonnwatson.com every Wednesday at 9 p.m. NYC time. Call in! (661) 449-9340 Click "Watch and Chat"
Please 'friend' me!
https://www.facebook.com/DMaxstandup
dmax is offline   Reply With Quote
Old 07-18-2011, 01:35 PM   #6
UGuideme
Registered User
 
Join Date: Mar 2011
Location: NYC
Posts: 17
My Ride: 2001 325i
Dmax; Thanks for the insight. I check the diagram and their seems to be a washer, However, Its for a model without converters I have a 325i 2001 with one.
UGuideme is offline   Reply With Quote
Old 07-18-2011, 03:49 PM   #7
LivesNearCostco
Registered User
 
Join Date: Jan 2010
Location: Silicon Valley
Posts: 767
My Ride: 2003 ZHP 6MT
I think most of the O2 sensors come with a washer on the threaded end of the sensor.
LivesNearCostco is offline   Reply With Quote
Old 07-18-2011, 04:27 PM   #8
UGuideme
Registered User
 
Join Date: Mar 2011
Location: NYC
Posts: 17
My Ride: 2001 325i
I pulled the 02 sensor out once again and behold their a washer. it has to be the manifold
UGuideme is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 On
Censor is ON





All times are GMT -5. The time now is 05:20 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use