Catalytic Convertor Problems - BMW Forum - BimmerWerkz.com
BMW Forum BMW Forum

Auto Insurance

» Featured Product
Wheel & Tire Center

Go Back   BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > M-Series (M1, M3, M5, M6)
Register Home Forum Active Topics Gallery / Showroom Auto Loans Garage Search Today's Posts Mark Forums Read Auto EscrowInsurance

M-Series (M1, M3, M5, M6) General M-Series Discussion - If it does not fit into a more specific M Category above, please place it in here. In addition, previously archived M-Series discussion is located in this section.

BimmerWerkz.com is the premier BMW Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 04-13-2005, 06:47 PM   #1 (permalink)
n00b
 
Join Date: Apr 2005
Location: Dallas,TX
Car:
Posts: 2
Photos:
MTomlinson07 is an unknown quantity at this point
Send a message via AIM to MTomlinson07
On my Mom's 1999 M3 the catalytic convertor went bad 5 months ago, and was replaced. She opted for the non BMW branded replacement because it was $500 less. 2 months later the catalytic convertor went bad again. She bought the BMW branded one this time. Now this one has gone bad and it has only been three months! The shop that does the work specializes in BMW's and said that it is impossible to have two defective catalytic convertors so there must be some other problem, possibly with the engine. The only code that the computer shows is for the catalytic convertor. Anyone have any experience with a problem like this or have any idea what me going wrong?
MTomlinson07 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-13-2005, 07:27 PM   #2 (permalink)
Neutral Member
 
Join Date: Oct 2004
Car:
Posts: 80
Photos:
POWER///M is an unknown quantity at this point
buy a good one from bmw but instead of puting that on, by a straight pipe with no converter. Gain in horsepower and sounds louder. When it comes time to get it smogged, put in the catalytic converter and your good to go.
POWER///M is offline   Reply With Quote
Old 04-13-2005, 09:07 PM   #3 (permalink)
n00b
 
Join Date: Apr 2005
Location: Dallas,TX
Car:
Posts: 2
Photos:
MTomlinson07 is an unknown quantity at this point
Send a message via AIM to MTomlinson07
The second replacement cat that went bad was a a BMW one. I don't think my 45 year old mom will go for the sound that comes with the straight pipe. She already complains about the exhaust on my car.
MTomlinson07 is offline   Reply With Quote
Old 04-14-2005, 11:32 AM   #4 (permalink)
Pandemonium Director
 
nukeduster's Avatar
 
Join Date: Mar 2005
Location: Scottsdale, Arizona
Car: turbo 325is, 325es, Audi a4 turbo
Posts: 2,372
Photos:
nukeduster has a reputation beyond reputenukeduster has a reputation beyond reputenukeduster has a reputation beyond reputenukeduster has a reputation beyond reputenukeduster has a reputation beyond reputenukeduster has a reputation beyond reputenukeduster has a reputation beyond reputenukeduster has a reputation beyond reputenukeduster has a reputation beyond reputenukeduster has a reputation beyond reputenukeduster has a reputation beyond repute
Send a message via AIM to nukeduster Send a message via MSN to nukeduster
running excessively rich will kill your cats prematurely

check your spark plugs

if they are overly carbonized/black you're running rich
__________________
nukeduster is offline   Reply With Quote
Old 04-15-2005, 06:48 PM   #5 (permalink)
1st Gear Member
 
Join Date: Mar 2005
Location: indianapolis, Indiana
Car:
Posts: 280
Photos:
bryan1970 is an unknown quantity at this point
although it is very unlikely it isn't impossible. there have been times where i have recived bad parts up to 3 times in a row of course they weren't cats but just goes to show that it can happen. but i'd prolly start lookin' at other possibilities for the premature failure too. you could actually test the cats by putting a gas analyzer on the car and find tou if the cats are infact bad. i guess the O2 sensors could possibly casue a problem as they are the sensors that actually check the efficientcy of the cats
bryan1970 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > M-Series (M1, M3, M5, M6)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Broken Catalytic Converter? Smoked Corners? SilentOne 3-Series (E36) 11 05-05-2005 11:55 PM
Custom Sport Catalytic Converters StrictlyBMW M-Series (M1, M3, M5, M6) 6 02-27-2005 02:42 PM
Catalytic Converter floydzeppelinfan 3-Series (E36) 1 10-25-2004 07:36 PM
E36, Catalytic Converter failure!!!! GRN_Bimmer 3-Series (E36) 12 08-31-2004 02:06 PM
catalytic converter Wurzig-Drei 5-Series (E12,E28, E34, E39, E60) 0 12-30-2003 07:32 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 02:05 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.