Guys, could a bad O2 on the driver bank be the cause of misfires in cyl 4-6?...
12-07-2005, 08:49 PM
#1
AudiWorld Super User
Thread Starter
Join Date: Aug 2002
Location: San Francisco
Posts: 6,762
Likes: 0
Received 0 Likes
on
0 Posts
Guys, could a bad O2 on the driver bank be the cause of misfires in cyl 4-6?...
I've only got misfires in Cyl 4 and 5...hardly any in 6 and absolutely none in 1-3. I just got a dead O2 code last week. Could this be the cause? In any case, I'm changing the O2 soon but I was just curious if improper O2 readings from one exhaust route could cause bad firing in only that bank. TIA.
12-07-2005, 09:09 PM
#3
AudiWorld Super User
Thread Starter
Join Date: Aug 2002
Location: San Francisco
Posts: 6,762
Likes: 0
Received 0 Likes
on
0 Posts
Any chance that an O2 could be "failing" but show no signs...
i.e. no codes being thrown? I ask because I've had misfiring issues in Cyl4-5 for a while but the O2 codes only came up last week.
12-07-2005, 09:14 PM
#6
Elder Member
Join Date: Jan 2004
Posts: 30,248
Likes: 0
Received 0 Likes
on
0 Posts
Correctomundo. 1 laptop is getting a new hard drive and the other constantly overheats...
When I get the other one back, I'll send the overheater out to get fixed.
I'm disappointed in you, keep hearing bad things. Call me one of these days so I can reprimand you.
I'm disappointed in you, keep hearing bad things. Call me one of these days so I can reprimand you.
12-07-2005, 09:17 PM
#7
AudiWorld Super User
Join Date: Aug 2001
Posts: 14,290
Likes: 0
Received 0 Likes
on
0 Posts
would those O2 voltages......
be mostly lean? I replaced one bank (drivers) but not my pass fronts and I get like .82ish in the first set...the rest are fine though (columns 2, 3, 4 are all around .86ish to.89) =(
Trending Topics
12-07-2005, 09:22 PM
#9
Elder Member
Join Date: Jan 2004
Posts: 30,248
Likes: 0
Received 0 Likes
on
0 Posts
A picture is worth a thousand words.....
When you see 1 sensor giving normal readings at WOT and the other tapering off like this, good indicator of a failing sensor AFAIK....
<img src="http://img.photobucket.com/albums/v654/DocSlow/Wooo-8-25-2005_PatrickStage1XR.gif" alt="Image hosted by Photobucket.com">
When you see both sensors tapering off, different story. Only time I've seen this is failing fuel pump (my car, S4Patrick's car, BuffaloNogaro's car)....
<img src="http://img.photobucket.com/albums/v654/DocSlow/LOG-01-031-badstockfuelpump.gif" alt="Image hosted by Photobucket.com">
<img src="http://img.photobucket.com/albums/v654/DocSlow/Wooo-8-25-2005_PatrickStage1XR.gif" alt="Image hosted by Photobucket.com">
When you see both sensors tapering off, different story. Only time I've seen this is failing fuel pump (my car, S4Patrick's car, BuffaloNogaro's car)....
<img src="http://img.photobucket.com/albums/v654/DocSlow/LOG-01-031-badstockfuelpump.gif" alt="Image hosted by Photobucket.com">
12-07-2005, 09:25 PM
#10
Elder Member
Join Date: Jan 2004
Posts: 30,248
Likes: 0
Received 0 Likes
on
0 Posts
That goes without saying, which is why I hate hearing bad things being said.
It has nothing to do with me being too cool to make mine public. With it has to do with...my current e-mail address is already associated with a prior (banned) account and thus I cannot make my current account link to it. This account is setup for Doc@PEBtuning.com, which no longer exists.
Oh, I don't have access to my e-mail right now. I'll go grab my phone and find your #, then call you from my house in a few.
Oh, I don't have access to my e-mail right now. I'll go grab my phone and find your #, then call you from my house in a few.