"Red cog of Death" - E46Fanatics E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 10-11-2016, 09:45 AM   #1
Webster569
Registered User
 
Join Date: Oct 2016
Location: San Diego, CA
Posts: 8
My Ride: 2004 BMW 330i
"Red cog of Death"

Hey everyone.... I have a 2004 330i that has had the red cog light come on and goes into "limp mode" twice in the last 3 days and not sure what could be causing it. Last week I was able to fix an intermittent stalling problem with a new camshaft position sensor and putting in new fuel and air filters, could this somehow be related to my reg cog light problem??

Any thoughts or ideas would be appreciated, thanks
Webster569 is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 10-11-2016, 10:47 AM   #2
das_autobahn
Registered User
 
Join Date: Aug 2016
Location: asheville
Posts: 508
My Ride: 2004 330ci coupe
get the codes from the obd2 port first...
das_autobahn is offline   Reply With Quote
Old 10-11-2016, 12:43 PM   #3
Webster569
Registered User
 
Join Date: Oct 2016
Location: San Diego, CA
Posts: 8
My Ride: 2004 BMW 330i
The red cog light goes away once the car is turned off and back on, will it store the codes?
Webster569 is offline   Reply With Quote
Old 10-11-2016, 01:26 PM   #4
Webster569
Registered User
 
Join Date: Oct 2016
Location: San Diego, CA
Posts: 8
My Ride: 2004 BMW 330i
Read codes there are none
Webster569 is offline   Reply With Quote
Old 10-11-2016, 05:40 PM   #5
Archbid
Registered User
 
Join Date: Jun 2013
Location: Marin, CA
Posts: 1,543
My Ride: 2003 330cic
What are you using to read codes?
Archbid is offline   Reply With Quote
Old 10-11-2016, 09:31 PM   #6
Webster569
Registered User
 
Join Date: Oct 2016
Location: San Diego, CA
Posts: 8
My Ride: 2004 BMW 330i
I'm using a Bosch OBD 1150 code reader
Webster569 is offline   Reply With Quote
Old 10-12-2016, 01:13 AM   #7
Gannon1226
Registered User
 
Join Date: Feb 2015
Location: North Las Vegas
Posts: 166
My Ride: 2003 325i
Sounds crazy but I'm gonna say it . Voltage regulator/alternator. At the very least get them tested. I had stalling then a few days later red cog . Then eventually it went from a monthly thing to a every few day thing. I'm thinking it was getting voltage surges/drops and it was trying to protect itself . Changed my alternatir and all has been well for months now . Eventually I should mention , but it didn't happen at first, I would get an ses. But only for misfires due to loss of voltage I assume and then eventually after that a battery light .
Gannon1226 is offline   Reply With Quote
Old 10-12-2016, 03:00 AM   #8
das_autobahn
Registered User
 
Join Date: Aug 2016
Location: asheville
Posts: 508
My Ride: 2004 330ci coupe
check for ac noise from alternator .03vac or more usually will make stuff freak out. at least it does on cummins trucks like mine if they have auto trans
das_autobahn is offline   Reply With Quote
Old 10-13-2016, 11:15 AM   #9
Webster569
Registered User
 
Join Date: Oct 2016
Location: San Diego, CA
Posts: 8
My Ride: 2004 BMW 330i
How would I go about checking for noise from the alternator?
Webster569 is offline   Reply With Quote
Old 10-14-2016, 09:07 PM   #10
Webster569
Registered User
 
Join Date: Oct 2016
Location: San Diego, CA
Posts: 8
My Ride: 2004 BMW 330i
UPDATE: I got the red cog to show up again and got a code off it this time, it read P0721 output shaft speed sensor
Webster569 is offline   Reply With Quote
Reply

Tags
330i, red cog

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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
Censor is ON





All times are GMT -5. The time now is 10:23 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
(c) 1999 - VerticalScope Inc. All rights reserved.