1987 300TDT Oil Pressure Gauge

[1987-300TD]

In addition our latest addition, I am trying to keep my daily driver as healthy as possible.

For the last month or two, the oil pressure gauge in the instrumentation panel has been...goofy. The gauge sits as 0 until the engine is started. Once started, it shoots to 3 and stays there until I turn off the car.

Prior to two months ago, the gauge would glide between 0 and 3 depending on the RPMs of the motor.

Any recommendations on where to start troubleshooting this one? :-)

Thanks To All!!!

glenn