Engine Oil Pressure: Description and Operation
ENGINE OIL PRESSUREThe oil pressure gauge indicates the pressure of the lubricating oil provided by the engine oil pump. The oil pressure gauge sending unit is a variable resistor mounted to the front of the engine so it will sense the oil pressure in a main oil passage just downstream form the engine oil pump. Under normal conditions the oil pressure reading should be between 138 to 414 kPa (20 to 60 psi). Engine oil pressure never should fall below a reading of 28 kPa (4 psi) even at idle.