I like U7 ha... have you checked the MAF? Sooty, dirty sensors will do
 just as you describe. Try q-tipping (with alcohol... on the q-tip not
 in you... VERY carefully) and also make sure the screen goes back into
 the MAF in one piece.

 Have you tried looking for help on NASIOC or a dedicated SVX forum?
 Those guys will know what to check and in what order, likely off the
 top of their heads.

 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)
> >
>