I need help with Oxygen Sensors for 1997 Camry

[bmmgolf24]

I am a DIY'er and I have recently done a major tune-up on my 1997 Camry 4 Cylinder. I need to still replace the oxygen sensors. I am looking for advise on this subject. Here are my questions:

1. What is the best oxygen sensor for Camry (Quality/Price)?
2. Should I go with OEM or Universal?
3. Where is the Post-Cat Oxygen sensor located and the best way to get to it?
4. Step by step process advise.

[bcsbadboys]

The front one is easy, right on the exhaust manifold.

The second one is tougher. It's behind the catalytic converter right in the middle of the car. Drive it up on ramps or jackstands to get as much room and leverage as you can. Use penetrating oil if rusted. Use or rent a O2 socket if necessary. I just used wrenches and a locking wrench/pliers. Might need to hammer the wrench a bit if it's severely rusted. When you get the sensor removed, go to the back seat, below the drivers seat pull up the carpet by the vent. You'll find the electrical connector. Disconnect and pull through. Install new O2 with dab of anti-seize. Borrow a Haynes from the local library if you want diagrams of the connectors, etc. or more info.

I used a universal O2 and didn't notice a drop in MPG or performance. Others may tell you OEM. Good luck.

[Mike Gerber]

To add to what bcsbadboys posted about the replacement of the rear O2 sensor, I found it best to tie a long piece of heavy twine or mechanics wire to the electrical connector, before pulling it through the bottom of the car. The twine should be long enough so that some of it remains inside the passenger compartment of the car when the electrical connector is pulled through to the bottom. Then attach the electrical connector of the new sensor to the twine underneath the car and pull it back through into the passenger compartment. This trick really saves a whole lot of time.

Mike