100 Sedan L5-2309cc 2.3L SOHC (NF) (1991)
EGR Valve Position Sensor: Description and Operation
W/ Manual Transmission
EGR System, Manual Transmission
The function of the exhaust gas recirculation (EGR) system is monitored by the injection control unit. While the EGR valve is operated by vacuum, the
vacuum supply is controlled by the EGR frequency valve, which is controlled by the ECU. This allows for a more precise control of when exhaust gasses
are introduced into the combustion process, thus minimizing the affect on driveability and performance.
EGR FREQUENCY VALVE
The frequency valve is mounted on the side of the air filter housing.
EGR TEMPERATURE SENSOR
Mounted to the side of the EGR valve.