S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Can bad O2 sensors or cats be bad for the car?

Thread Tools
 
Search this Thread
 
Old 11-23-2002, 11:10 PM
  #1  
AudiWorld Super User
Thread Starter
 
drgolfnut's Avatar
 
Join Date: Sep 2001
Posts: 2,721
Likes: 0
Received 0 Likes on 0 Posts
Default Can bad O2 sensors or cats be bad for the car?

After getting my F-ed up TBB replaced today the car was pulling better than new. Unfortunately, 3 hours later a CEL popped up with the DTC 17584/17585 (O2S correction behind catalyst)

Archives point to bad O2 sensors or cats. Since I'm at 96k, and am unsure if extended warranty covers cats, would it be such a horrible thing to run in this state? I have to admit doing something very dumb by putting 110 octane in at Buttonwillow. I found later that it was leaded. DOH! It's been 4k miles ago that I did that though.

Any thoughts?
Old 11-23-2002, 11:19 PM
  #2  
Member
 
D_Echo's Avatar
 
Join Date: Jul 2002
Posts: 2,115
Likes: 0
Received 0 Likes on 0 Posts
Default

fouled or "done in" 02 sensors can throw off air/fuel maps big time.
Old 11-24-2002, 12:03 AM
  #3  
Junior Member
 
Zoltan (icecreaman)'s Avatar
 
Join Date: Jan 2002
Posts: 1,694
Likes: 0
Received 0 Likes on 0 Posts
Default piggie runs at the track with leaded 110! that should be fine

I have had 2 bad rear o2s for quite some time. Car runs fine, i don't know if it will run better with new ones or not?
Old 11-24-2002, 01:20 AM
  #4  
Member
 
elCheng's Avatar
 
Join Date: Oct 2000
Posts: 4,467
Likes: 0
Received 0 Likes on 0 Posts
Default it's a factor of age

the cats will go bad after extended use. seen em' alot
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
a6killa951
A6 / S6 (C5 Platform) Discussion
12
11-14-2007 12:37 PM
MarkItZero
A6 / S6 (C5 Platform) Discussion
7
07-29-2006 09:26 AM
djillusion
S4 / RS4 (B5 Platform) Discussion
6
04-21-2005 10:25 AM
S4orce2001
S4 / RS4 (B5 Platform) Discussion
20
03-29-2004 12:12 PM
s4jon2000
S4 / RS4 (B5 Platform) Discussion
14
12-12-2002 01:29 PM



Quick Reply: Can bad O2 sensors or cats be bad for the car?



All times are GMT -8. The time now is 09:02 PM.