On the third day of Christmas my Pontiac gave to me, zero oil pressure readings.
On our way home from dinner the pressure was pegged, and then dropped to zero. Throwing a CEL. Got home pulled the code P0521 oil pressure sensor. Some of you may recall that I was getting my lifters and cam done. A brief Google search seems this can happen. Not sure why.
My modified Mustang is now the “reliable” car.