02 SENSORS? DIY???

[Ultimate Driving Machine]

I have searched google, you tube and few forums I still cant find DIY on the 02 sensors with pictures would be preferred..

1.) how many sensors are they and were are they located?
2.) any tips?
3.any DIY with pictures?

[galcala]

There is four o2 sensors that run along the exhaust, one up by where it connects to the manifolds coming from the engine on each side and one closer to the transfer case again on each side, total of 4. not a difficult job but you would benefit quite a bit by raising the car for access. just remove the nuts connecting the pipes, and the hangers, lower the pipes and you will have easy access to all.