C 1500 Truck 2WD V8-350 5.7L VIN K TBI (1995)
Oil Pressure Switch (For Fuel Pump): Description and Operation
PURPOSE:
As a back-up system to the fuel pump relay, the fuel pump is also turned ON by the oil pressure switch.
OPERATION:
When the engine oil pressure reaches about 28 kPa (4 psi), through cranking the oil pressure switch will close to complete the circuit to the fuel
pump.
