EFI System Description

NOTE: For specifications on Throttle Position Sensor (TPS), idle speed and mixture, and fuel pump output volume, refer to the appropriate article in the TUNE-UP or ENGINE PERFORMANCE Section.

The Bosch AFC (L-Jetronic) fuel injection system is used on all models. However, variations may exist between model applications. For computer control information, see the appropriate article in the COMPUTER ENG CONTROL or ENGINE PERFORMANCE Section.

The Bosch Airflow Controlled (AFC) fuel injection system is an electronically controlled system operated by incoming airflow. The AFC fuel injection system also contains a feedback system which measures oxygen content of exhaust gases and maintains the air/fuel ratio at about 14.7:1.

The fuel injection system consists of an electric fuel pump, fuel pressure regulator, fuel damper, fuel injectors, Electronic Control Unit (ECU), and airflow meter. In addition, an air temperature sensor, throttle position sensor, coolant temperature sensor, oxygen sensor, catalytic converter, auxiliary air valve, idle speed control valve, throttle body, and electrical relays are used.

NOTE: Not all models use all components.