[s-cars] Low boost on 1995 S6 (insert swearword of your choic e)

[Paul Heneghan]

My boiler broke down over the weekend, so I fixed that instead of playing
with the car!

However, just before the boiler broke, I took the dash apart and spent quite
some time looking for the loom containing the wiring for the Engine Check
Light - it's definately not there.  This was confirmed by Phil Payne, who
emailed me this morning to say that UK s-cars don't have the wiring for this
prefitted to the IC.  He recommended taking a feed for a 12V LED from the
fuse/relay box.  I'll give that a go and report back.

It appears as if the Californians have the wiring and the bulb fitted.  The
rest of the Americans/Canadians have the wiring, but no bulb.  The Europeans
have the wiring (not fastened to the IC though - just lying loose behind the
IC) but no bulb.  And, in the good old UK we have ... sod all.  Typical!

I did see a momentary 2.0 on the boost gauge though.  I can't get it above
about 1.7 in 2nd, and if I try testing it in 3rd or 4th, I keep running out
of road and reaching ridiculous speeds.

I squeezed lots of hoses - they all appeared in good condition, but
obviously my squeeze test wouldn't divulge a minor split.

Phil Payne, the great quattro turbo guru advised me that 'Air mass sensor
potentiometer and inlet air temperature sensor cover 98% of S2 problems.'
I'm tempted to replace those (and maybe the O2 sensor as well) if they're
affordable.

When I opened the throttle, I heard one click when it opened.  I was
expecting another click later on indicating WOT, but I didn't hear any.  Any
thoughts anyone?  When my Bentley arrives, I'll be able to test it with my
multimeter, but that's a few weeks away yet.

Final question: how many UK s-car listers are there?  I know there's me and
Jonathan Khang, but are there any other lurkers?  There's no shortage of
s-cars over here.  On any given day, there have got to be about 10 each S2s,
urS4s and urS6s for sale on www.autotrader.co.uk, so there must be a few
hundred (at least) changing hands every year.

Paul




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