You have four oxygen sensors. Two on each side of your engine.
On one side of your engine, you'll have a sensor right next to the engine on the exhaust manifold. Then down stream on the exhaust pipes, right after the cat converter, you'll have another one.
The other side of the engine is exactly the same.
I can't show you a diagram because I'm not allowed to display illustrations from the data service that I use. Maybe another technician on our forum has that information they can share.
But this replacement procedure is so simple, I don't think you'll need it.
If you go to a parts store, you can purchase a O2 sensor removal socket for $10 bucks. When replacing the sensors, first follow the wire from the sensor until you locate the connector. Sometimes there's a plastic clip inserted into a slot that prevents the connector from vibrating loose.
Slide this clip out and unplug the connector. Then use the O2 socket to remove the sensror. (Wait until the exhaust cools down or you could damage the threads).
Then when replacing with the new sensors, use a dab of "Anti-sieze" compound and DO NOT over tighten.
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Wednesday, February 24th, 2010 AT 7:23 AM