RE: My post two days ago about the flickering oil pressure light on my 2.1L
WBX

First, thanks to all who responded to my initial inquiry.  You were all
right on, pressure sensor.
BTW, for those that asked about or mentioned oil grade I'm running 15/50
Mobil 1.
All fixed, no more flickering.  First, my mechanic found that the wire to
the high pressure sensor was disconnected. And it was quite dirty, has
probably been that way for some time, probably several years.  Reconnected
and still the same problem.  So we replaced both oil pressure sensors (and
changed oil and filter, it was due anyway) and problem is gone.  Long test
drive and no flickering hot or cold, at speed or at idle.  BTW, we checked
the oil pressure while we were at it, 60 PSI at idle.  That's got to be good
for an engine with 162,000 + miles on it.
Again, thanks for all the responses.