[s-cars] Running Rich: Help with Fault Code

[Tony Curran]

Hey Brian,

Do your plugs have a rust like discolouration at the base of the ceramic. My
mechanic advises this is not good and should be replaced immediately, which
I did.

In good ol' USA, best price I found for F5DPor plugs was...
http://www.expressautoparts.com/PartSearch/getpart.cfm?year=1996&make=AU&mod
el=S6--001&category=F&part=Spark%20Plug

I actually bought mine from local mechanic who had a reasonable price.

Tony
96 S6

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com]On Behalf Of Brian Powell
Sent: March 22, 2005 6:06 PM
To: s-car-list at audifans.com
Subject: [s-cars] Running Rich: Help with Fault Code


Greetings, my car has been running rich of late. I had an oldish O2
sensor in there, so, I replaced with a universal (I didn't pull codes
before this). After 10 days, it is still acting the same way, so I
plugged in VAG-COM and got the following fault code:

00537  - Lambda (Oxygen Sensor) Regulation
         11-10 - Control Limit Not Reached - Intermittent

So, a new (spliced) O2 sensor and this is there. Granted, it could be
left over from the previous O2 sensor; however, things are still rich.
The tailpipe is blackened and the plugs are sooty.

Any ideas?

BTW, I have an RS2 setup with 37# injectors and MRC software. I am
also at altitude (Denver).

--
Cheers,
Brian
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