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 > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 01-07-2009, 11:42 PM
nzle39 nzle39 is offline
Registered User
Location: New Zealand
 
Join Date: Jan 2009
Posts: 2
Mein Auto: 1997 BMW 525i E39
Check Control - "Slow! Cat. Overheat"

Hi,

I have recently purchased a 1997 E39 525i and the check control message:

"SLOW! CAT. OVERHEAT"

Comes up when I start the car. Does anyone know what this message means and what I can do to fix it? Is it a serious issue?

Thanks for your help.

Stu
Reply With Quote
Advertisement
  #2  
Old 01-08-2009, 12:04 AM
kingdunke's Avatar
kingdunke kingdunke is offline
Officially Welcomed to the 'Fest
Location: los angeles
 
Join Date: Nov 2007
Posts: 750
Mein Auto: 02 530iA Sport Jan/02 mfg
could it be caused by misfiring so that some unburned gas air hot mixture is going thru the headers then the cat? did check engine light come on?
Reply With Quote
  #3  
Old 01-08-2009, 12:07 AM
nzle39 nzle39 is offline
Registered User
Location: New Zealand
 
Join Date: Jan 2009
Posts: 2
Mein Auto: 1997 BMW 525i E39
The error was present when I got the car...since I have owned (a month now :-) ) it the check engine light has never come on and I don't think it has ever misfired on me.
Reply With Quote
  #4  
Old 01-08-2009, 07:09 AM
doru's Avatar
doru doru is offline
Officially Welcomed to the 'Fest
Location: Calgary
 
Join Date: Sep 2007
Posts: 4,702
Mein Auto: 2003 530iA
Maybe something with post cat O2 sensors?
Try to have the code(s) read. It might point you in the right direction. If the car drives and pulls OK, I believe the catalitic converter & the post cat O2 sensors might be gone.
__________________
Reply With Quote
  #5  
Old 08-16-2014, 08:17 PM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 25,236
Mein Auto: 02 BMW 525i M54 auto 130K
See also:
> E39 (1997 - 2003) > List of all possible BMW E39 instrument cluster text warnings & text messages
And, in this recent SLOW! CAT. OVERHEAT canonical thread:
> E39 (1997 - 2003) > Possible Catalytic Converter
__________________
Please read the suggested threads and add value, either by pictures or by descriptions, so the next person stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 08-17-2014 at 09:01 AM.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)
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 10:57 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms