Fuel Metering System

WARNING: This page is about a different car, the 2002 Saturn LW200, 2002 Saturn L200, and 2002 Saturn L100. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Fuel Metering System Diagram

Courtesy of GENERAL MOTORS CORP.

The fuel metering system is made up of the following parts:

Fuel supply components (fuel tank, pump, filter, regulator and lines).
Fuel pump electrical circuit.
Fuel rail assembly, including:
- Fuel injectors.
- Pressure regulator.
Throttle body assembly:
- Idle Air Control (IAC) valve.
- Throttle Position (TP) sensor.