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 > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 10-12-2012, 05:30 AM
Bafana Nkosi Bafana Nkosi is offline
Registered User
Location: Southern Africa
 
Join Date: Jun 2012
Posts: 4
Mein Auto: BMW 318 E46
Bmw e46 1999-2000 rough idling

Please help! Iam driving a BMW E46 1999-2000 Model Automatic in the morning when you start the car the idling is just horrible as it fluctuates and once engine is hot then it becomes normal. It does this even when the car has used and parked for while for instance an hr and you have to wait until it stabilise before you hit the road.

Regards
Mina
Reply With Quote
Advertisement
  #2  
Old 10-12-2012, 06:01 AM
gotrice415 gotrice415 is offline
Registered User
Location: San Francisco Bay Area
 
Join Date: Apr 2012
Posts: 66
Mein Auto: M3, 335Ci, X5d, 750i
Could be a few issues if happening when cold. One is the Vanos unit. Do you hear rattling type noise in the front o the engine when this happens? If so, most likely a Vanos unit. If not, I would check the idle control valve.

Another common col misfire could be collapsed lifters, but you would hear ticking type noise.

Good Luck!
Reply With Quote
  #3  
Old 10-12-2012, 06:48 AM
TannerT TannerT is offline
Officially Welcomed to the 'Fest
Location: Columbia, Missouri
 
Join Date: Mar 2012
Posts: 966
Mein Auto: 03 330ci 3pdl 89 325i
How bad is it? It could be the mischievous SAP. Hate that thing!

Sent from my PantechP9060 using Bimmer App
__________________
Formula SAE "Speed is Sexy"
Reply With Quote
  #4  
Old 10-12-2012, 03:04 PM
jdauria jdauria is offline
Officially Welcomed to the 'Fest
Location: Arlington, VA / NY
 
Join Date: Oct 2012
Posts: 763
Mein Auto: E39 ///M5
Clean your MAF, check lower intake boot for crack/tear

Hook up your e46 to a code reader, and provide codes please
__________________
2000 ///M5 ///M Registry (1 of 21 ever made)
Oxford Green Metallic II (430) | Caramel Nappa Leather (M3CR) | Brushed Aluminum "Stahlgrau"|
Square Style 65's - Pilot Super Sports
Tuning Tech Tune by Frank Smith (http://www.tuningtechfs.com/)
Tuning Tech IAT Kit
Supersprint Headers
SuperSprint X-Pipe
Eisenmann Race 4x83mm
DINAN Front Strut Brace
Storm Motorwerks Products

2006 X3 3.0i M-Sport | Silver Grey | Terracotta | AT | Navigation | Premium Pkg | Cold Weather Pkg | AFE |

Last edited by jdauria; 10-12-2012 at 03:09 PM.
Reply With Quote
  #5  
Old 10-13-2012, 03:36 PM
jcjdavis1 jcjdavis1 is offline
Officially Welcomed to the 'Fest
Location: Paisley Scotland
 
Join Date: Feb 2010
Posts: 165
Mein Auto: E46 2000 318ise
Hi. With the engine running take off the oil filler cap, if the rough idle is just the same you have a vacuum leak. I would change all your vacuum/breather hoses.
You will find all your hose in RealOEM, buy them from the dealer. Jim
http://www.realoem.com/bmw/partgrp.d...2&mospid=47631
__________________
The older I get the wrong bit gets stiff!!
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)
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 08:10 PM.


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