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 > M Series > E36 M3 (1995-1999)

E36 M3 (1995-1999)

Reply
 
Thread Tools Display Modes
  #1  
Old 01-05-2011, 03:17 PM
jshough jshough is offline
Registered User
Location: NC
 
Join Date: Dec 2010
Posts: 12
Mein Auto: 00 528i Sport Pkg (E39)
M3 Stalls With No Warning (Hwy and Driveway)

I have a 1995 BMW M3 that runs like a top for a few days then "bam" complete loss of power/stalls unexpectedly. Leave for 5-10 minutes, fires back up and idles perfectly @ 500-550 RPM and can drive for a while and the problem comes back? Finally, after replacing Ignition Coils, Spark Plugs, New Air Filter (on K&N Cold Air Induction), Crankshaft Position Sensor, and not seeing this error state change, took to local BIMMER Mech., who says it has thrown the following code (desc): Control Unit Supply Voltage B+????
As a side note, the car runs like a top (placed a glass of H2O on the head and it just sits!!) and it runs like a scalded dog....that is until it stops running! :-)
Thank you in advance.
Reply With Quote
Ads by Google
  #2  
Old 01-06-2011, 07:32 PM
fun2drive's Avatar
fun2drive fun2drive is offline
BMWCCA 149159
Location: Panhandle of Florida
 
Join Date: Nov 2005
Posts: 2,612
Mein Auto: 335 vert//M3/4/ 13Outback
I recall that B+ was the feed to the alternator so that doesn't make great sense to me.
What does make a lot of sense is a failing DME relay or fuel pump relay. They are cheap and I would replace them both. What appears to be happening is the relay gets warm after use, fails and then stops. Sitting for a short period of time allow for cooling off and the whole deal is repeated. I suggest something like this or even an ignition switch failure because if it was somethng on the engine 30 minutes isn't enough time to allow the engine to cool down but something away from the engine like the fuse box where the relays sit or ignition switch area would sure be the right location.
Best suggestions I can come up with...
Reply With Quote
  #3  
Old 01-13-2011, 07:13 PM
Killjoy's Avatar
Killjoy Killjoy is offline
OEM Hoe....
Location: Santa Cruz, CA
 
Join Date: May 2009
Posts: 1,819
Send a message via AIM to Killjoy
Mein Auto: 1999 M3, 2002 tii
Possibly a fuel filter? Likely not, since you can drive spiritedly for a bit, but stranger things have happened.
__________________

Quote:
Originally Posted by Cmy_bimmer View Post
Oh your talking about THAT hole.. yeah thats an inspection hole
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > M Series > E36 M3 (1995-1999)
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 12:26 PM.


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