Where are they at? How many I think there are 4? But what are the chances all four would go bad at the same time, the dealer says 3 of them are bad.

What tools would I need to remove/install?

Where can I find OEM for cheap?

Thanks!

 

http://forums.maxima.org/5th-generat...bs-inside.html

 

2 upstream and 2 downstream.

It is more common for the downstreams to go 1st. Make sure you always replace them in pairs.

 

il make it easier

 

Thank you, that was MUCH easier!

 

Are there any special tools that I need to remove? install?

 

I just used an open ended wrench, but there is suppose to be a proper tool that does it.

 

That diagram is great. i got code 1146 for b1 sensor 2 and i was about to replace b2 sensor 1 lol. there is an o2 socket i borrowed from autozone. you can use a wrench but some of them are to hard to get at with a wrench. you get the $25 back once you return it. Thanks for the diagram Drock. you save me some time from a mistake lol.
ps. I'm only replacing 1...not a pair...i don't think its that big of a deal? rrod