Low Gauge Readings

["Mike Miller (Volt Comp)" <a-mikemi@microsoft.com>]

My 91 200q (3B engine) has suddenly started to display lower than normal
readings on all the gauges. Volts down about 1v from normal, oil
pressure down to just shy of 4 bar when driving and warm from where it
used to be ~5bar and now just under 2 bar at idle, oil temp a notch or
so low, etc..Even boost reads .9 with key on. Are all these (except for
boost) controlled by the multifunction switch? And is the multifunction
sw located by the after run thermostat under the intake manifold? Where
does the boost function on the trip computer get it's input from? On the
91 200, isn't there an atmospheric pressure sensor that affects how much
boost is allowed? Anyone know where that is located? Seems to me if that
were sensing lower than actual (higher altitude), then boost would be
lowered also. I just gotta get the Bentley shortly.

Thanks,
mike miller