C 1500 Truck 2WD V8-350 5.7L (1989)
Oxygen Sensor: Description and Operation
Fig. 6 Oxygen Sensor (Typical)
The exhaust oxygen sensor is located in the exhaust system and monitors oxygen content in the exhaust gas stream. The oxygen content of the exhaust
gas reacts with the oxygen sensor to produce a voltage output, Fig. 6. By monitoring the oxygen sensor output voltage, the ECM can determine the
amount of oxygen in the exhaust gas and adjust the air/fuel mixture accordingly.