Car runs fine and then the oil pressure light comes on and it starts to tap and rev high. There is plenty of oil and there are no leaks. Let it sit turned off for 5-10 minutes and the oil light goes off, then eventually goes back on again. I don't have the pick up when the oil light comes on either. The oil pressure light comes on, I don't know if this means there is a high oil pressure problem or a low oil pressure problem.