RE: Replacing Oil Pressure Sensors on a 2.1L WBX
I don't do my own 'wrenching' but often hang around my mechanics shop when
he is working on my '90 Westy.  So I happened to be there when he replaced
both the oil pressure sensors on my rig last fall.  IIRC it took him about
1/2 an hour, maybe a little more? I know it was, for him, straight forward
and quick and I was back on the road.  Why were they replaced?  The
previous day, while driving home from a VW event no less, the oil pressure
light started to flicker.  No relationship to engine RPM or speed.  And
seemed to come and go on the 30 mile trip home.  So the replacement of the
sensors, no problem since.