Went out to start van this afternoon.  Garage temp around 80F.  Van started
but then misfired and stalled.  Finally got engine going, but idle was not
stable until warm.  Suspect either temp II sensor or aux. air regulator.
Checked hot and cold settings with an old regulator and they are about the
same.  I had suspected aux. air regulator as idle too slow when cold and too
fast when at full temp.  However, both closed at right temp.

Both throttle microswitches appear ok.

Any ideas?

John Lauterbach