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Disconnect the negative terminal on the battery; disconnect the sensor connection; the sensor is located in the exhaust; drowned the threads in release compound; don't even try to remove an O2 sensor without first doing this, you will stip the threads or break of the sensor; let soak for about 5 mins, then unscrew; might be necessary to heat also with a torch, clean threads in exhaust and put and antiseize compound that is sensor safe and reinstall to appropriate torque, and reconnect sensor and battery.
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∙ 12y ago
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