Fuel Delivery and Air Induction: Description and Operation

System Diagram:

GENERAL DESCRIPTION
Vehicle is equipped with a computer controlled electronic fuel injection system. System maintains an air/fuel mixture as close as possible to the ideal stoichiometric ratio under all operating conditions. Fuel is supplied to injectors at high pressure by an in-tank electric fuel pump. The Powertrain Control Module (PCME) monitors various engine mounted sensors, including an oxygen sensor, and uses this information to determine fuel injection quantity.

COMPONENTS
Primary fuel and intake components are covered in this section. For information regarding electronically controlled devices, the computer, and its functions, refer to Computers and Control Systems.

^ Accelerator pedal and cable.
^ Air cleaner, intake air ducts and associated parts.
^ Fuel tank.
^ Fuel pump.
^ Fuel pump relay.
^ Fuel filter.
^ Fuel pressure regulator.
^ Fuel rail.
^ Fuel hoses.
^ Fuel injectors.
^ Idle air control valve.
^ Intake manifold.
^ Mass airflow sensor.
^ Resonance chamber.
^ Throttle body.