Thanks to the suggestions from Zoltan, John, and others about both
replacing the Temp II sensor AND checking several of the
grounds-to-cylinder head connections, the rich running issue seems to
be solved. That is, Cunegonde is idling normally - slowly and seeking.

But now... running very hot with a lot of air and very little coolant
in the engine hoses. I have both rear and front heat off. Both of the
coolant tanks/overflow reservoirs are full. The idiot gauge shows the
temp going up past the center while idling @ 800-1000 rpm. If I run it
at 2000 rpm, the temp gauge will move slightly towards cool, but not
the usual needle at the right-hand mark on the cool end of the gauge.

Bad thermostat (oh no, must empty and bleed the whole system?!), and
or needing a major bleed? Can I get some of the air out via the valve
on the h-pipe, before jacking her up and bleeding from the radiator?

--
Bretts

1983 1.9l WBX Ivory Westfalia "Cunegonde"