"Service Engine Soon" - BMW Forum - BimmerWerkz.com
5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 08-17-2003, 12:23 AM
5th Gear Member
 
CosmosBlack's Avatar
 
Join Date: Jul 2003
Location: Florida
Posts: 1,289
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute
(Thread Starter)
Thumbs up

I have a "Service Engine Soon" light on my instrument panel. My technician ran thru' the diagnostics and it said it has something to do with mixture being too lean in both banks of the cylinders (2000 540i). He checked around and found that the oil separator diaphragm was leaking air. So, I had that replaced as he was so sure that was the problem.

Now the same light comes on again! I suspect it could be the oxygen sensor. Has anybody had this problem before? If so, I hope I could have some tips or suggestions so that I could get straight to the problem instead of spending money replacing the wrong parts.

Thanks!



2012 Porsche 911 GTS
2008 Ford F150 Foose Edition
2010 VW Touareg

----------------------------------
Gone...2002 Porsche 911 C4S
Gone...2000 BMW 540i
Gone...1995 BMW 540i
CosmosBlack is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 09-14-2003, 12:33 AM
n00b
 
Join Date: Sep 2003
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
jhkoenig is an unknown quantity at this point
Simple/stupid answer: the gas cap may be loose. The captive leash attaching the cap to the car gets trapped under the cap as it screws on (at least on my 2000) which triggers the SES light.

Once I freed the leash and tightened the cap the light went out. wow ghead
jhkoenig is offline  
#3 (permalink) Old 09-14-2003, 12:43 AM
5th Gear Member
 
CosmosBlack's Avatar
 
Join Date: Jul 2003
Location: Florida
Posts: 1,289
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute CosmosBlack has a reputation beyond repute
(Thread Starter)
Thanks, that is one of the causes but usually not so, unfortunately. I wish it was then it would be cheap! I have fixed the problem since this post. Replaced the throttle body and Mass Airflow sensor. Both jobs totaled almost $900.



2012 Porsche 911 GTS
2008 Ford F150 Foose Edition
2010 VW Touareg

----------------------------------
Gone...2002 Porsche 911 C4S
Gone...2000 BMW 540i
Gone...1995 BMW 540i
CosmosBlack is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 5-Series (E12,E28, E34, E39, E60)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Help...92 318I Gas Engine Sounds Like a Diesel ? DougJP 3-Series (E36) 13 04-11-2006 12:56 AM
Bad Engine Idle And Fault Not Found.. Paraklas 3-Series (E21, E30) 10 06-16-2005 10:25 PM
BMW P83 Engine triggrhaapi Bimmer Talk/Motorsports Talk 0 07-21-2003 03:03 PM

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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome