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To change the oxygen sensor on a 2004 Ford Freestar, first ensure the vehicle is turned off and cool. Locate the oxygen sensor, which is usually found on the exhaust manifold or downstream in the exhaust system. Disconnect the electrical connector and use a wrench or O2 sensor socket to unscrew the old sensor. Install the new sensor by threading it into place, reconnect the electrical connector, and clear any fault codes if necessary.

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1mo ago

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