Passport LX 4WD V6-3165cc 3.2L DOHC MFI (2001)
Fuel Meter Body: Description and Operation
Fuel Metering Basic System Operation
Fuel Metering System Components
The fuel metering system is made up of the following parts:
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The fuel injectors.
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The throttle body.
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The fuel rail.
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The fuel pressure regulator.
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The PCM.
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The crankshaft position (CKP) sensor.
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The ION sensing module.
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The fuel pump.
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The fuel pump relay.
Basic System Operation
The fuel metering system starts with the fuel in the fuel tank. An electric fuel pump, located in the fuel tank, pumps fuel to the fuel rail through an in-line
fuel filter. The pump is designed to provide fuel at a pressure above the pressure needed by the injectors. A fuel pressure regulator in the fuel rail keeps
fuel available to the fuel injectors at a constant pressure. A return line delivers unused fuel back to the fuel tank. Refer to fuel tank, line filter, and fuel
pipes for further information.
