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

[Tom Mullane]

Brian,

Mihnea likes fuel.  My S6 with the same set runs very rich.  I was alarmed
at first, but I have gotten used to it.  Marc Swanson logged a bunch of
air/fuel data trying to sort out a different car, and found the MRC chip to
be based toward rich.  My Stromung tips are encased in a layer of protective
soot.

Tom



Date: Tue, 22 Mar 2005 16:05:46 -0700
From: Brian Powell <powellb at gmail.com>
Subject: [s-cars] Running Rich: Help with Fault Code
To: s-car-list at audifans.com
Message-ID: <910ae26605032215053dfd903f at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

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