Front drivers side of the engine. Behind the alternator. Hard to see and get to. It has a white plug with one wire. Fords oil pressure sending units are not real sending units. Your oil pressure gauge is a glorified idiot light. Its either on or off, always in the middle. I put a real pressure gauge in mine.
I'm not a mechanic / technician but I believe on a 2003 Mercury Mountaineer , 4.0 liter , SOHC , V6 engine that the oil pressure sending unit is on the front of the engine in the area where the lower radiator hose connects to the water pump
Oil Pressure Sender and SwitchFord Ranger/Explorer/Mountaineer 1991-1999 Check Related Links below.
The oil pressure sending unit is located right above the oil filter.
Your engine oil could be low check it when it cools and if level is fine your oil pressure sending unit could be bad or engine in need of rebuilding
Did you check the -- sending unit !!
On a 1997 Mercury Mountaineer , 5.0 liter ( 302 cubic inch ) V8 engine : The engine oil pump is INSIDE the engine oil pan According to my Haynes repair manual in order to remove the oil pan ( to get access to the oil pump ) THE ENGINE HAS TO BE REMOVED * the engine oil pressure sending unit is on the OUTSIDE of the engine beside the engine oil filter
The oil pressure sending unit is located on the back of the block. it is the sensor located closest to the alternator.
The coolant temperature sending unit on a 97 Mercury Sable is in the engine compartment. It is located on the intake manifold.
The 2003 Cadillac Deville oil pressure sending unit is located on the left-hand side of the engine. The oil pressure sending unit will be three inches above the oil pan.
You lift the vehicle and lower the fuel tank. The fuel sending unit is removed from the top, and the pump can be wiggled out of the unit.
near the oil filter
On the 4.0 L OHV engine, the oil pressure sending unit is on the driver's side of the engine, located below the power steering pump.