I show you how to replace your O2 Sensor. This is being performed on a 1997 Chevy Tahoe. Automotive oxygen sensors, colloquially known as O2 sensors, make modern electronic fuel injection and emission control possible. They determine if the air fuel ratio exiting a gas-combustion engine is rich (with unburnt fuel vapor) or lean (with excess oxygen).
Tags: O2, Sensor, Oxygen, Sensors, Check, Engine, Light, Clark, 66
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