I have a problem with my 93 Australian built Capri with the Mazda engine that just started. When I start it up the oil pressure will read very high and stay high until the first time I stop and drop to idle ( after it’s warm). Then the pressure will drop very low or bottom out, then as soon as you come off idle and go back up to 1,500+ rpm the pressure will clime back to normal or low normal until the next stop the bottom out again. The oil level is fine and it’s not losing or burning oil. The oil and coolant is clean and normal and I pulled the oil pan and pickup and they were clean. The engine also runs and sounds like it’s new. I am thinking it’s the oil pump going south? Any other thoughts?

Thanks,

Charles