Having issues with my Oil Pressure gauge. It has started jumping around erratically, more than if it was and oil pump issue. I changed the sending unit, no change, just changed the gauge, no change, and then changed the entire cluster, no change. Any Ideas?
Have you put a mechanical gauge where the sending unit is to verify that the pressure is steady at that location? My guess is it is but verifying the mechanical side puts it absolutely on the electrical side of things.