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 - F01 / F02 (2009 - 2015)

7 Series - F01 / F02 (2009 - 2015)
The 5th generation F01/F02 BMW 7 Series flagship forum. The redesigned 7 series leads off the BMW Fxx chassis code, offering an 8 speed automatic transmission and all turbocharged engine options.

Reply
 
Thread Tools Display Modes
  #1  
Old 04-28-2016, 07:07 PM
rush12 rush12 is offline
Registered User
Location: Hoffman
 
Join Date: Apr 2016
Posts: 3
Mein Auto: 2011 Bmw 750li
2011 750li catalytic problem

I have 2011 bmw 750li f02 i notice my Catalytic converter red hot any one have idea what is going on? It's only happening to driver side. I notice this after leaving car on for five minutes. Anyone had a same problem in past? and what is the solution to it?

Last edited by rush12; 04-28-2016 at 07:17 PM.
Reply With Quote
Advertisement
  #2  
Old 04-28-2016, 07:09 PM
aom aom is offline
Moderator
Location: SoCal
 
Join Date: Jan 2002
Posts: 750
Mein Auto: 750i 740i 330ci
not sure if that's normal, I dont' think I've seen it glow. Are they both doing that?

If not, then maybe it got clogged or the honeycomb structure inside disintegrated.

Are you getting any codes or drivability issues?
__________________

F01 750i Dark Graphite Metallic M-Sport Packages: Driver Assistance | ARS | Luxury Seating | Camera | Convenience | Premium Sound | 20" 303M Wheels | Ceramic Controls
BMS Stage 1 Tune | Pedal Box | M-Sport Paddle Shift Steering Wheel | 5000k HID | Tint | Mtec Angel Eyes LED | Rear Tinted Taillights | Coded


E38 740i Black Sport Packages: PDC | Convenience | Sunshade
Paddle Shift Retrofit | Brushed Aluminum Gauge Ring | Modified M-Sport Steering Wheel | Tint | MKIV NAV | 4500K HID | 3M DiNOC Carbon Fiber Trim | Heated Seats | Refinished M-Parallel Wheels | Celis Tails

My PedalBox Stealth Install: http://www.bimmerfest.com/forums/sho...d.php?t=725889
Reply With Quote
  #3  
Old 04-28-2016, 07:13 PM
rush12 rush12 is offline
Registered User
Location: Hoffman
 
Join Date: Apr 2016
Posts: 3
Mein Auto: 2011 Bmw 750li
There is no code coming and only driver side is doing it. does that anything has to do with mass air flow sensor?
Reply With Quote
  #4  
Old 04-28-2016, 07:16 PM
aom aom is offline
Moderator
Location: SoCal
 
Join Date: Jan 2002
Posts: 750
Mein Auto: 750i 740i 330ci
Nope, the MAF doesn't control the actual Cat, so to speak. Not like that.
__________________

F01 750i Dark Graphite Metallic M-Sport Packages: Driver Assistance | ARS | Luxury Seating | Camera | Convenience | Premium Sound | 20" 303M Wheels | Ceramic Controls
BMS Stage 1 Tune | Pedal Box | M-Sport Paddle Shift Steering Wheel | 5000k HID | Tint | Mtec Angel Eyes LED | Rear Tinted Taillights | Coded


E38 740i Black Sport Packages: PDC | Convenience | Sunshade
Paddle Shift Retrofit | Brushed Aluminum Gauge Ring | Modified M-Sport Steering Wheel | Tint | MKIV NAV | 4500K HID | 3M DiNOC Carbon Fiber Trim | Heated Seats | Refinished M-Parallel Wheels | Celis Tails

My PedalBox Stealth Install: http://www.bimmerfest.com/forums/sho...d.php?t=725889
Reply With Quote
  #5  
Old 04-28-2016, 07:26 PM
aom aom is offline
Moderator
Location: SoCal
 
Join Date: Jan 2002
Posts: 750
Mein Auto: 750i 740i 330ci
I guess you're out of warranty? You could always remove them and see if they are clogged or something. but i'm pretty sure, even after driving my car hard, they haven't glowed.
__________________

F01 750i Dark Graphite Metallic M-Sport Packages: Driver Assistance | ARS | Luxury Seating | Camera | Convenience | Premium Sound | 20" 303M Wheels | Ceramic Controls
BMS Stage 1 Tune | Pedal Box | M-Sport Paddle Shift Steering Wheel | 5000k HID | Tint | Mtec Angel Eyes LED | Rear Tinted Taillights | Coded


E38 740i Black Sport Packages: PDC | Convenience | Sunshade
Paddle Shift Retrofit | Brushed Aluminum Gauge Ring | Modified M-Sport Steering Wheel | Tint | MKIV NAV | 4500K HID | 3M DiNOC Carbon Fiber Trim | Heated Seats | Refinished M-Parallel Wheels | Celis Tails

My PedalBox Stealth Install: http://www.bimmerfest.com/forums/sho...d.php?t=725889
Reply With Quote
  #6  
Old 04-28-2016, 07:53 PM
jgbackes's Avatar
jgbackes jgbackes is offline
Officially Welcomed to the 'Fest
Location: Northern CA
 
Join Date: Apr 2014
Posts: 1,470
Mein Auto: 2014 750Li
Quote:
Originally Posted by rush12 View Post
I have 2011 bmw 750li f02 i notice my Catalytic converter red hot any one have idea what is going on? It's only happening to driver side. I notice this after leaving car on for five minutes. Anyone had a same problem in past? and what is the solution to it?
I think that your cat should be covered by the 8 year 80,000 mile emission warranty. Give your dealer a call.

jeff
Reply With Quote
  #7  
Old 04-28-2016, 07:56 PM
rush12 rush12 is offline
Registered User
Location: Hoffman
 
Join Date: Apr 2016
Posts: 3
Mein Auto: 2011 Bmw 750li
I mean ya you are right that's my best chance to open it and look at it! But i just wanna know is there a specific snesor that can go bad and cause this?
Reply With Quote
  #8  
Old 04-28-2016, 09:36 PM
Monsterrailroad Monsterrailroad is offline
Almay
Location: CONNECTICUT
 
Join Date: Feb 2016
Posts: 47
Mein Auto: 2012 BMW 750Li
Your Cat is NEVER supposed to get red hot, glowing. The previous versions had an awful reputation for the catalytic converters going bad. It does not seem to plague the newer F01/F02 series but your Drivers side is likely Clogged and will likely need replacement but that is just an educated guess since we cannot properly test your car on the internet. Did you notice any power loss issues? Hearing muffled sounds? What made you take a look at the catalytic converters? If the cats are out of warranty at least the OEM converters are less than $500 unlike the earlier 740iLs and 745Lis. To find out the answer for sure you just have to take it to a good shop with ASE certified mechanics. It does not have to be a BMW dealer either, don't get sucked into the, "I HAVE to take it to the BMW dealer" mentality.

Last edited by Monsterrailroad; 04-28-2016 at 09:38 PM.
Reply With Quote
  #9  
Old Yesterday, 08:41 AM
Poncherello Poncherello is offline
Registered User
Location: NY
 
Join Date: Oct 2015
Posts: 76
Mein Auto: 2013 750Li
The mostly likely cause is blockage or to much raw fuel being passed through the converter. The job of the converter is to burn any raw fuel that gets past combustion. If your converter is glowing red there is an excessive amount of raw fuel being burned in it. This excessive fuel results from a lack of combustion within one or more cylinders. This can be the result of bad valve seals.....which is not what most F01/02 owners want to hear.
Reply With Quote
Reply

See More Related BMW Stories


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - F01 / F02 (2009 - 2015)
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 06:18 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms