Also to save yourself some headaches, dump the cat until you get
sorted.. run a testpipe, as an overheated/melted cat will compound
your troubleshooting bigtime. Anything that might have affected the
ECU to cause a failure?(recent battery charger/starter on the system
with a cold or crap battery causing an overvoltage condition for
example?)

Also what about the basics like fuel pressure? What is it at?

Jim Akiba

On 12/24/07, pensioner <al_knoll@pacbell.net> wrote:
> Beset by demons.  The venerable svx camping box is NOT on the road.  All
> relevant commentary invited that might shed some light on the demonic
> infestation.
>
> >>>>
> Posted to the subaruvanagon and svxvanagon groups:
>
> After the demise of my long suffering exhaust system (tacoma) with
> it's myriad re-welding patches and lousy leaky performance,
> installing the new system has given me a troubleshooting opportunity.
>
> Posted to svxvanagon group:
>
> Troubleshooting a bit of a snit with a 92-93 SVX installation whilst
> everyone else languishes in the sun a Bahia de los Angeles. For those
> of you aware of the selectmonitor software/cable etc: I would much
> appreciate a known good ini file for the 92 vintage SVX. Short of
> chanting and calling an expensive exorcist one or two of the best are
> completely bumfuzzled over a very rich running problem. Details can
> be provided and later discussion encouraged but for now I would
> dearly love a known good selectmonitor.ini file as a christmas present from
> the gathered net.wisdom.expertise.
> <<<<
>
> Details core dump somewhat incomplete and ongoing:
>
> What we know, what we don't know and what we've done..  Not in chronological
> or any other logical order
>
> What we know:
>
> A. The Tacoma exhaust system was far beyond the end of it's useful lifetime.
> Leaky both through cracks and poor alignment with the head.  No longer
> maintainable and causing EGR and O2 Sensor degraded performance.
>
> B. The timing belt was at 60+Kmi and needed to be replaced per PM
> recommendations.
>
> C. There was a 'whirr' in the area of the timing belt.
>
> D. The O2 sensors would not likely be savable due to age and corrosion.
> Should be replaced.
>
> E. The Tacoma Oil pan had a poor drain plug housing implementation resulting
> in leaks at the plug. Repair or replace with MCM large capacity pan.
>
> F. The van ran as usual on arrival even with the abovementioned
> shortcomings.  Fuel consumption was 13-14mpg measured with GPS
> for the previous several thousand miles.
>
> G. After installation of the Exhaust system using the MCM recommended
> components, replacement of the questionable O2 sensors, installation of the
> improved oil pan, replacement of the Timing belt and the defective rollers
> and the plastic camshaft bearing covers, installation of the heat shield,
> the van showed ~5mpg fuel consumption and an overheated Catalytic converter
> after 25miles on the road at highway speeds.
>
> H. Walker SVX O2 Sensors drop shipped to MCM per recommendation.
>
> I. Measuring the new O2 sensors at the sensors gave 0.011 V (11 MV) steady
> at both sensors.
>
> J. Measuring HC gave >600ppm with the new sensors.
>
> K. Measuring HC with the old sensors re-installed gave ~20ppm at idle.
> voltage not measured.
>
> L. The overheated Catalytic converter caused some melting of the taillight
> wiring harness insulation on the Drivers side.
>
> M. ECU fault light set on first road test.
>
> N. ECU does not dump codes/show codes when queried using jumper diagnostic
> method.
>
> O. <<<reserved for more knowns>>>
>
>
> What we don't know:
>
> U1. Why the cat gets hot.  May be too small for motor displacement.  May be
> running very rich at road speed and load.
>
> U2. Why the ECU doesn't emit codes anymore.  May be interrogating it wrong
> (bad test connector).  May be defective ECU.
>
> U3. When exactly does the fault light turn on.  Does it stay on.  Does it
> remain on after restart.
>
> U4. Whether or not the ECU codes are reset yet.  (did we reset them using
> the re-learn mode or did we reset them using the jumper
> reset method or did we not reset them yet)
>
> U5. Whether the coolant sensor (tested to spec at the sensor by MCM) signal
> is present at the ECU. (may indicate cable malfunction)
>
> U6. Whether the O2 Sensor signals are reasonable and also present at the
> ECU. (may indicate cable malfunction)
>
> U7. Whether Janet wears pasties on both nipples (may indicate wardrobe
> malfunction) included just to see if you are reading along.
>
> U8. Whether the New O2 sensors are properly wired in manufacture
> (visual/continuity comparison should detect defective mfg).
>
> Need pin-outs and wire colors from harness on motor.
>
> U9. Why the fuel consumption was ~5mpg after the first work was done.
>
>
> pensioner (struggling manfully to achieve mediocrity)
>