Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > Z Series > E36/7 Z3 (1996-2002)

E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

Reply
 
Thread Tools Display Modes
  #1  
Old 12-28-2012, 10:11 PM
senikc senikc is offline
Registered User
Location: Milledgeville, Ga
 
Join Date: Oct 2012
Posts: 76
Mein Auto: 1994 Mercedes E320
Service engine soon light

Old subject which seems to be a constant problem with Z3
1999 Z3 2.5 Liter. Peake code reader E3 & E4 O2 sensor adaptation limit cyl 1-3 & 4-6
Have changed, CCV Valve and hoses, O2 pre cat sensors, fuel filter, done a leak test on hoses, no leaks evident.
Could it be the fuel tank emissions, charcoal canisiter, vent lines?

Any suggestions what to check next?
Reply With Quote
Advertisement
  #2  
Old 12-29-2012, 06:31 AM
FZbar FZbar is offline
Officially Welcomed to the 'Fest
Location: Chevy Chase, Maryland
 
Join Date: Aug 2004
Posts: 280
Mein Auto: 2002 Z3 2.5 Roadster
A repeated problem with my 2002 Z3 2.5 liter was the exhaust camshaft position sensor. It happened three times.

It could be related to an oxygen sensor error.

Good luck.
Fred
Reply With Quote
  #3  
Old 12-29-2012, 05:15 PM
Blacklane Blacklane is offline
Officially Welcomed to the 'Fest
Location: Springfield, Ohio, USA
 
Join Date: Jun 2011
Posts: 1,082
Mein Auto: 1998 Z3 Roadster
I was thinking Mass Airflow Sensor. An unknown reading from that would cause mixture problems, but normally, you would expect a few other codes for this condition, such as P0170 Fuel Trim.
I have also heard of the post-cat O2 sensor causing pre-cat O2 sensor tests to fail, but normally the efficiency tests, not the limit tests.
I did a quick forum search on "E3" and came up with dozens of hits. Maybe you should look over those, as well as "E4."
It might be worth the expense to have more diagnostics done. A well-equipped shop could tell you the oxygen levels in the exhaust, read the various sensor levels, and quickly eliminate a lot of unknowns.
Reply With Quote
  #4  
Old 12-29-2012, 05:59 PM
morrieschoice's Avatar
morrieschoice morrieschoice is offline
Officially Welcomed to the 'Fest
Location: birmingham,al
 
Join Date: Oct 2006
Posts: 386
Mein Auto: 2001 3.0 Z-3 ROADSTER
MAF Sensor

I got same codes on my car...thought it was the MAF sensor...bought one & same codes still came up. I did NOT check the boots (there are 2 of them) connected to sensor from engine side...found a tear in the boot connected to the sensor. Now I have a new "in box" MAF sensor f/sale...
Reply With Quote
  #5  
Old 12-30-2012, 07:59 PM
senikc senikc is offline
Registered User
Location: Milledgeville, Ga
 
Join Date: Oct 2012
Posts: 76
Mein Auto: 1994 Mercedes E320
Thanks for the information and suggestions, I will post results when and if I resolve the problem.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > Z Series > E36/7 Z3 (1996-2002)
Today's Posts Search
Thread Tools
Display Modes

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



Forum Jump


All times are GMT -7. The time now is 10:46 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms