Fuel Metering System

FUNCTION
The function of the fuel metering system is to deliver the correct amount of fuel to the engine under all operating conditions.

PARAMETERS
Fuel is delivered by the fuel injector, in the Throttle Body Fuel Injection (TBI) unit, which is controlled by the Powertrain Control Module (PCM) based on several important engine operation parameters. These parameters include engine speed, Manifold Absolute Pressure (MAP), Engine Coolant Temperature (ECT), Throttle Position (TP), and exhaust oxygen content.

COMPONENTS
The fuel metering system consists of the air/fuel delivery system and the electronic control system.