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Where are the oxygen sensors on a 2000 Buick Century 3.1 and how do you replace them?
Wiki User
∙ 17y ago
follow the exhaust pipe from the motor towards the back of the car. There should be one right by the firewall, and there might be one by the converter. use a 7/8 wrench if one will fit. Just unscrew the old 02 sensor and install the new one.
Wiki User
∙ 17y ago
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