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!

 
 
Thread Tools Search this Thread Rate Thread Display Modes
Prev Previous Post   Next Post Next
Old 10-16-2012, 08:01 PM   #22
nola mike
Registered User
 
Join Date: Jul 2011
Location: Richmond, VA
Posts: 56
My Ride: 2001 330 CiC
Quote:
Originally Posted by jfoj View Post
Do you have just a broken flapper or do you also have a blown vacuum diaphragm as well?

The DISA can play some crazy games with the intake performance, cannot say for absolute certainty that the broken DISA flap can and will cause a lean code on only one bank, but you need to get everything sorted out to continue to rule out specific issues.

Depending on mileage, not a bad idea to replace O2 sensors, recommended at 100k miles anyway, fresh O2 sensors usually do not resolve lean codes, they usually help you see how bad things really are regarding fuel mixture issues.
Well, after I reset the lights, I actually am now getting lean codes on both banks, and other numbers consistent with a vacuum leak (see my above post). I don't think the O2 sensors are the problem. They're both behaving the same, and as you'd expect for a lean condition. Also, my code scanner has a specific O2 sensor test that includes the response time. Cool. Also, DISA diaphragm appears to be working well. And the pivot arm was completely circular--I doubt it's been working for quite some time.

Anyway, as I dug deeper I realized a couple of things:
1) I didn't actually remove the CCV lower hose
2) My dipstick O-ring is shot
3) Found an obvious broken hose at the SAP--from what I've read though, this shouldn't cause a code?
4) While trying to inspect another hose (looks like it comes from the CCV?), I broke it taking it off. Don't know if it was already cracked.

I had to put everything back together, as I ran out of time to work on it. So I'll be ordering both CCV hoses, the DISA repair kit, dipstick o-ring, and I may just get some stock hose for the SAP hose. Still not sure that I found my problem, even though I'm finding problems
Attached Thumbnails
Click image for larger version

Name:	IMAG0538.jpg
Views:	61
Size:	132.5 KB
ID:	474223   Click image for larger version

Name:	IMAG0537.jpg
Views:	54
Size:	82.3 KB
ID:	474222   Click image for larger version

Name:	IMAG0536.jpg
Views:	42
Size:	62.2 KB
ID:	474221  
nola mike is offline   Reply With Quote
 

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 06:40 PM.


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