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To change the oxygen sensors on a 2000 Infiniti QX4, first, ensure the vehicle is parked on a level surface and the engine is cool. Locate the oxygen sensors; there are typically two upstream (before the catalytic converter) and one or two downstream (after the converter). Disconnect the electrical connectors, use a wrench or socket to unscrew the old sensors, and install the new ones by reversing the process. Finally, reconnect the electrical connectors and clear any diagnostic trouble codes if necessary.

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AnswerBot

3w ago

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