10/20/15:
The Porsche
993 was sold early this summer. It was an adventure.
The car suffered,
what I later learned, is a severe smog system failure known as a
"secondary air injection" failure. The nature of the failure
is not totally unreasonable given the German penchant for thoroughness,
but the recovery from the failure is wretched.
The first step
requires that the failure condition be resolved. If one is lucky,
this requires having a mechanic blow out accumulated combustion
products from air passages in and around the camshaft and exhaust
valves. If this doesn't work, the next step is a valve/head job
on both sides of the engine... to the tune of $10K.
My mechanic,
David Modderman, tried to blow out the crud, and then reset the
error codes read by the OBDII system. This clears the "check
engine" lite, but guarantees nothing.
As with all
modern cars, the sensors checked by the OBDII system have three
distinct states: "set", "triggered" or "reset"
(my words). The check engine lite is cleared by putting the sensors
in the "reset" state. In this state, the SMOG check required
to sell the car with fail... it requires all the sensors to be in
the "set" state. With most cars, just simply driving around
for a few 10's of miles will switch all sensors from "reset"
to "set", in which state they are prepared to again sense
a fault and switch to "triggered" and thereby again triggering
the check engine lite. The is true in the Porsche as well, except
that the procedure to switch the sensors from "reset"
to "set" is very difficult. In the trade it's know as
"the drive". It takes several hours to complete, involving
periods of driving at various speeds and delaying for various intervals..
all with exceeding 3000 RPM or 50 MPH.
It's quite difficult.
And, of course, if the original failure condition hasn't been properly
repaired, the check engine lite will come back on as soon as the
sensor is move into the "set" category... from which it
will immediately switch to the "triggered" state.
It appears that
all Porsche affectionatos know all about this stuff, so when you
try to sell, you're immediately peppered with questions about whether
the car has been SMOGGED and whether it's suffered the dreaded SAI
failure.
It took me several
days and two trips to the smog test center to get the car in shape
to sell. After that it was easy.
11/5/09:
I find retirement
to be very pleasant. I tend to be even more busy than ever, but
doing things that are probably less important. Girlfriend Birgit
keeps me running around, taking trips and generally having a good
time. I've even developed a taste for opera and the theater... with
which we are blessed here in the Bay Area.
I continue to
be involved in the local PhotoSIG group and photography in general
has become one of my passions, along with the model trains. Camping
is more important than ever, but the sailing that I enjoyed so much
is losing its luster as I get older and find the physical strength
required to rig and race a sailboat to be problematic.
I worked off-and-on
for WhereNet Corporation from 2004 to 2008 building a variety of
wireless gadgets. WhereNet was acquired by Zebra Enterprises in
2007 and their management changes made it impossible for me to remain
there. I left in April 2008 and decided that I was now truly retired.
My last true
non-consulting job was with NetSchoolst, building computers and
systems for K-12 schools. I loved that work, but the Company just
couldn't make a go of it and sold itself to Plato. An
admittedly one-sided analysis of the Company and its demise is found
here.
Roger's career
has been marked by a number of interesting and challenging projects...
that's another way of saying that some of the projects failed dismally.
His attitude has been conditioned by experience racing small sailboats:
"If you don't tip over every now and then, you're not pushing
close enough to the limit". Well, we've successfully gotten
to the limit several times. His work history includes the design
of million dollar scientific and medical instrumentation, communications
systems to talk to a working drill bit while drilling an oil well,
TV set top boxes, video projection systems, and a variety of wireless
communications systems based on RF and IR propagation channels.
If you're interested in more information, check out the resume
or drop him a line at at this
address
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