The O2 sensors use a 7/8th wrench - special sockets with a slot cut into them to accommodate the wiring are also available.
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With a 7/8in. Oxygen sensor socket or wrench
The oxygen sensor on a Buick Rendezvous is located immediately before the converter on the driver's side. You will need either a special socket or a wrench to remove the sensor.
12 mm bolts to remove heat shield on exhaust manifold and 7/8 wrench to remove 02 sensors
18mm
If the starter bolts are difficult to remove on a 1997 Ford Taurus, they were probably put on using an air wrench. An air wrench can be used to remove them or a product called Liquid Wrench.
12 mm socket to remove heat shield from exhaust manifold 7/8 wrench for 02 sensor and disconnect from connecter behind valve cover/motor
You need to take a wrench to loosen the oxygen sensor, then you will need to disconnect the cord. Once you have done that you will then pull out the old oxygen sensor.
To replace the oxygen sensor on a Honda Odyssey, first unscrew the sensor. Then use a 22 mm socket or 7/8 inch wrench to replace the oxygen sensor.
It depends on which of the. Camry 1999 LE has two of them. One is next to the engine, another one is under the passenger seat. You get in AutoZone a special oxygen sensor wrench, I highly recommend to use because it's to brake the sensor. While the engine is still warm, disconnect the battery, disconnect the oxygen sendor from the wire harness. Remove the sensor using the wrench, be careful it can be hot. Install a new sensor, thighten it, connect to the harness. If you need to replace the sensor under the passenger seat, you will have remove the seat, if you want to disconnect it. Juck your car up. After that remove the sensor (you can find it in the exhaust pipe just under the passenger seat) using the wrench, install a new one, tighten it, connect the sensor to the harnees. Connect the battery.
If the sensor is not to be used again I would disconnect the wires leading to it then cut the wires off at the sensor. Now you can slip a 7/8" box wrench over the sensor and remove it by turning it counterclockwise. Install the new one using a 7/8" open end wrench.
There are 2 oxygen sensors. 1 sensor located right behind the engine (which is known as the upstream sensor) and one behind the catalytic converter (known as the downstream sensor). It is located at about the middle point of the vehicle on the top of the pipe. You will need an O2 sensor socket to remove the upstream sensor, and you will need an O2 sensor wrench with a pivoting handle to remove the downstrean sensor.
You need 15 and 18 mm wrench.