92 100CS oil pressure warning - Auto System Check

[Scott 20191668 Bermes <scottb2460@earthlink.net>]

Well, if it ain't one thing it's another!  The oil pressure warning on
my auto check display keeps going off ever since I ran over a blown tire
tred last month. I took it to the dealer who fixed the engine cover
under the car, checked the oil level and everything looked ok, but they
couldn't replicate the warning.

Last week, the dealer changed the oil on Friday and everthing was fine
(including a 350 mile drive) until yesterday. Now the warning is going
off quite a bit. The gague reading is almost at the top reading
(4.8?)when I am driving and around 1.5-1.8 when stopped.  I am taking it
to the dealer tomorrow and wanted to know what you all think about what
they might say.

Are there sensors under the engine which could have been effected by
running over the tire treds?  The manual says to not drive the car when
the warning comes on, but I have driven over 100 miles since the warning
started yesterday.  Appreciate any info.

Scott