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Re: Where's my O2 sensor located
Heated Oxygen Sensor (HO2S)
SPECIAL SERVICE TOOL(S) REQUIRED
Oxygen Sensor Wrench
T94L-9472-A Removal and Installation NOTE: If excessive force is needed to remove heated oxygen sensor (HO2S) (9F472) , lubricate heated oxygen sensor with penetrating oil prior to removal.
Disconnect battery ground cable (14301) .
Disconnect heated oxygen sensors from engine control sensor wiring (12A581) .
Raise vehicle on hoist. Refer to Section 00-02 .
Remove heated oxygen sensors from dual converter Y pipe (5F250) using Oxygen Sensor Wrench T94L-9472-A.
To install, reverse Removal procedure. Tighten heated oxygen sensors to 36-46 Nm (26-34 lb-ft).
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It should be screwed directly into the exhaust manifold. If you found it hanging, and you do not have a major exhaust leak, then I would say that your O2 sensor is broken. Look for a bung on the manifold and you will have to extract what is left of your old one.
bank 1 is pass/side exhaustpipe/converter bank 2 is on the driverside,this car has two converters, so you have 4 oxygen sensors, one before and one after the converter on each side, so bank 1 sensor1 is pass/side before the converter, bank 1 sensor 2 is pass/side after the converter, then bank 2 sensor1 is driverside before the converter, before means starting at motor, then bank 2 sensor 2 is driverside after the converter, heres a diagram to help, i hope this is helpful.
you will need to crawl under the car and look at the mufflers where they come out of the motor and behind the catalytic converter. you will probably have one before and after the catalytic converter on both pipes. You will have to count the wires once you find them. They will be screwed directly into the exhaust pipe.
If you have never replaced your oxygen sensors then that is probably the cause, you can usually expect 50-100K miles out of an O2 sensor. If you have the money replace all of your O2 sensors at the same time, it should also help with your mileage and performance a little.