Oxygen Sensors
Geo Metro
Toyota Tacoma
Ford F-250

What color wire does an oxygen sensor plug into on a 1991 Geo Metro?

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Wiki User
2005-04-15 05:26:31
2005-04-15 05:26:31

They are blue, black and white. They can be found extending from the catalytic converter (the upstream O2 sensor) and possibly from a second source (the downstream sensor).

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