[s-cars] Re. not the code I expected

[Ben Swann]

Steve,

O2 sensor should have no effect on starting and comes into play when ECU goes into
closed loop operation - that is engine is warmed up, which in the newer cars happens
within a minute of startup.

Have you verified TDC alignment coincides with timing belt adjustment?

You may be looking at a flaky ECU that spits out spurious codes due to bad internal
ground wire or other connection between boards.

Ben

[Date: Wed, 23 Sep 2009 23:09:45 -0500
From: "Steve Marinello" <smarinello at entouch.net>
Subject: [s-cars] not the code I expected
To: "'S-Cars'" <s-car-list at audifans.com>
Message-ID: <8613DE88AA7A4D0AB99112860184A19B at GT5674>
Content-Type: text/plain;	charset="us-ascii"

Well, the S6 has failed to start one more time.  It was warm.  It restarted after it
cooled off a bit.

Finally blinked the codes, expecting the cam sensor, if anything.  NOT.  Got 2341;
oxygen sensor..overheating and other assorted comments in the Bentley. 

There was a new sensor put on in the Spring, along with two new cats.  As you may
remember, I was frustrated that the sensor was bad, because the mileage did not improve
and, in fact, got worse.  My mechanic checked the
sensor and said it was functioning fine.   Hmmm.
 
Would the O2 sensor even keep it from starting?  Which way to go now?  I suppose the
first step is to check the current CPS and see if it is functioning, but since it's
intermittent even when hot, that may not show anything.

Let me know what you think.

TIA,

Steve]