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Oxygen Sensor Operation:

A device found in the exhaust manifold, which generates a small voltage dependent on the amount of oxygen present in the exhaust stream, used as a signal to the engine-control computer to determine the amount of fuel necessary to maintain a proper air/fuel ratio.

How To Instructions:

Test - Give it an in-depth diagnosis.

Replace - Out with the old, in with the new.

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Oxygen Sensor

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