On the 4.0 L - OHV - V6 engine :
On the drivers side of the engine , below the Power Steering pump
I believe that is near the oil filter
On my 1995 Ford Explorer, with the 4.0 L OHV engine, the sending unit for the oil pressure guage is located just below the power steering pump.
Where is the oil sending unit on ford freestar
On a 1996 Ford Explorer : ( if you have the 4.0 liter EFI , V6 engine ) The oil pressure sending unit for the gauge is on the drivers side of the engine , below the power steering pump )
the sending unit is located near the bottom of the block on the left ( driver side) it is on the same harness as the oil level switch
possibly on the oil filter unit, look for a wire coming out plugged into it.
Where is the oil pressure sending unit on 1992 ford ranger
On the drivers side of the engine , below the power steering pump
This is only going to answer 1/2 of your question but the oil pressure sending unit is on the drivers side of the engine , below the power steering pump
Assuming that the engine oil is at a constant pressure, look at the oil sending unit. A bad sending unit or loose wire connected to it can cause an erratic oil reading.
I believe the oil pressure sending unit for the oil pressure gauge is located on the drivers side of the engine , below the power steering pump ( 4.0 L - OHV - 6 cylinder )
drivers side of engine , below the power steering pump