Engine Mechanical problem
1998 Ford Expedition V8 Four Wheel Drive Automatic 216000 miles
My oil pressure goes from good to bad very quickly. I have replaced the switch that controls the gauge and light, I have tested the pressuer with a guage put into the pressure switch, and it drops to zero after running/warming up. I think it time to replace the oil pump.
Does the differential have to be removed? Does the timing chain and cover have to be removed? Can you tell me what has to be removed, and pitfalls to watch out for?
Thank you very much.