Hello. My name is XXXXX XXXXX I will be glad to assist.
The oil pressure sending unit is a common failure on these engines.
I would start by replacing the sending unit next to the oil filter.
If you have a oil pressure gauge, you could test the oil pump.
The oil pump is mechanical.
Thanks, I'm in the process of replacing the sending unit. I'll hope that will test my pressure.
in the event that the pump is bad, is it possible to remove the pan and access it without lifting the engine?
The oil pump takes 13 hours to replace. Let hope the sending unit fixes your concern.
Let me know your results.