On the 1992 2.3L it is located in the engine block on the driver's side near the rear of the motor below the intake manifold under the throttle body area.
The 1994 Ford F3 50 pickup truck 7.3 liter engine oil pressure sending unit can be found on the left-hand side of the engine. The oil pressure sending unit will be near the front of the engine.
There is no such thing as an oil pressure switch on your 1994 Ford Ranger 3.0 liter engine. There is an oil pressure sensor. The oil pressure sensor can be found on the left-hand side of the engine.
Probably next to the oil filter
The oil pressure sending unit for the oil pressure gauge is located on the drivers side of the engine below the power steering pump on your 4.0 liter OHV - V6 engine
The oil pressure sending unit is on the top rear of the engine, next to the distributor.
We need to know which sending unit you speak of. There are several on that vehicle such as temperature sending unit, oil pressure sending unit and fuel gauge sending unit.
in the 1.9 liter engine it should be from 35-45 psi
Should be in the range between 50-55 psi
It is on the back of the engine, just to the side of the distributor.
It is screewed into the top of the block right behind the distributor. It is HARD to get to.
According to one of Fords websites : For a 1994 Mercury Villager , 3.0 liter V6 : The radiator cap is ( 13 PSI )
The oil pressure sending unit is located on the oil filter housing. Look above the filter and you will see a single wire going to the unit. You will need a sending unit socket to remove it. The tool can be purchased at any auto parts store for a nominal fee.