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 > 7 Series / 8 Series > 7 Series - E38 (1995 - 2001)

7 Series - E38 (1995 - 2001)

Reply
 
Thread Tools Display Modes
  #1  
Old 09-14-2012, 05:09 PM
beemer1804's Avatar
beemer1804 beemer1804 is offline
WAR MACHINE
Location: Pennsylvania
 
Join Date: Feb 2012
Posts: 162
Send a message via AIM to beemer1804 Send a message via Yahoo to beemer1804
Mein Auto: 95 740IL
Rough idle

My 95 E38 idles rough when under 1500rpm, do anybody know why its like that? Any answers or suggestions are welcomed bmw bretheran.

War Machine
Reply With Quote
Ads by Google
  #2  
Old 09-23-2012, 03:14 PM
BMWFatherFigure's Avatar
BMWFatherFigure BMWFatherFigure is offline
Old School
Location: Perth, Western Australia
 
Join Date: Aug 2012
Posts: 2,144
Mein Auto: E23;E30;E38;E32;E34 +
Looooooooong list. Vacuum leaks, fuel pressure, TPS, Air Mass device, Fuel filter, Spark plug(s), Coil Packs; CPS; Throttle Body settings; VANOS problems; What Codes are being displayed/stored?; Blocked exhaust; Blocked Air Filter; Fuel pump; Loose wires on the EMC loom - That should do as a start
__________________
Good - Fast - Cheap: Pick any two.
Current:
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
Previous:
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
Reply With Quote
  #3  
Old 09-27-2012, 05:55 AM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 20,412
Mein Auto: 02 BMW 525i M54 auto 130K
Quote:
Originally Posted by BMWFatherFigure View Post
Looooooooong list
Believe it or not, over a period of a few years, I tried to compile the COMPLETE list of what SOLVED rough idle misfires over here in the E39 bestlinks (all of which should apply equally well to the E38):
- How to diagnose a BMW E39 engine misfire (1)
__________________
Each repair should invariably add to our knowledge base by the process of inexorable incrementalism.
Your job, in return, is to read the suggested threads, where the best people will always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
Reply With Quote
  #4  
Old 09-23-2012, 03:23 PM
beemer1804's Avatar
beemer1804 beemer1804 is offline
WAR MACHINE
Location: Pennsylvania
 
Join Date: Feb 2012
Posts: 162
Send a message via AIM to beemer1804 Send a message via Yahoo to beemer1804
Mein Auto: 95 740IL
Only codes displayed were o2 sensor then a few weeks later it said lambda, i checked for air leaks and nothing, i always knew that my fuel filter was bad, i was actualy gonna change that already, and of course my o2's. Hopefully something changes.

War Machine
Reply With Quote
  #5  
Old 09-23-2012, 03:30 PM
beemer1804's Avatar
beemer1804 beemer1804 is offline
WAR MACHINE
Location: Pennsylvania
 
Join Date: Feb 2012
Posts: 162
Send a message via AIM to beemer1804 Send a message via Yahoo to beemer1804
Mein Auto: 95 740IL
How do i check the vanos? And can my fuel filter cause war machine to shake, im guessing it effects my fuel pressure?

War Machine
Reply With Quote
  #6  
Old 09-27-2012, 05:58 AM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 20,412
Mein Auto: 02 BMW 525i M54 auto 130K
BTW, this tool (or an equivalent) is indispensable for troubleshooting rough idle misfires:
- Cheapest CAN OBDII scanner on the net that reads DTCs, pending codes, & clears codes
__________________
Each repair should invariably add to our knowledge base by the process of inexorable incrementalism.
Your job, in return, is to read the suggested threads, where the best people will always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 09-27-2012 at 12:27 PM.
Reply With Quote
  #7  
Old 09-27-2012, 07:50 AM
beemer1804's Avatar
beemer1804 beemer1804 is offline
WAR MACHINE
Location: Pennsylvania
 
Join Date: Feb 2012
Posts: 162
Send a message via AIM to beemer1804 Send a message via Yahoo to beemer1804
Mein Auto: 95 740IL
I thought 95 740il doesnt have vanos?

War Machine
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E38 (1995 - 2001)
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 Off



Forum Jump


All times are GMT -7. The time now is 05:18 PM.


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