Thanks, Sam.  I'll have a gander at the O2 sensor in the
morning.  It's puzzling, though, in the past when I've had O2 sensor
problems they developed gradually, not abruptly.  Is there anything
the mechanic could have done accidently that would cause it to start
malfunctioning?  For instance, would replacing the muffler cause a
change in the O2 levels because the exhaust pressure had increased or
decreased?  Could the CAT have been affected in some way which could
work itself out on the O2 sensor?  In any event, how might the
coolant level indicated be tied in?

Things get curiouser and curiouser.

Charles
'85 Westy

At 12:55 PM 8/30/2006, Sam Walters wrote:
>Charles,
>
>Attached are some files for assistance in diagnosis of fuel
>injection system difficulties.
>
>Disconnect the O2 sensor and see if the problem goes away.  If so,
>it is either the O2 sensor or its wiring.  You can run this way for
>a day or two to compare.  Wiggling the wire is no test of the O2 sensor.
>
>These files will give you lots of info on particular symptoms and
>the sensor or other part that is likely to create that symptom.  It
>is a good bit to read but it is very good.  These are things I have
>downloaded from the list or searched out of its archives.
>
>Sam
>
>--
>Sam Walters
>Baltimore, MD
>
>89 Syncro GL, Zetec Inside
>85 Westy Weekender
>85 Mercedes Benz 300D Turbodiesel - to become veggie oil powered
>
>All incoming and outgoing email scanned by automatically updated
>copy of Norton AntiVirus.
>
>
>
>
>