Aright so I know this has been over a million times, but I think I'm gonna change my o2 sensors on my car to get some better MPG. Getting 14.5 mpg right now 60% city 40% highway, 180 miles on a full tank, I know I can be getting way better.
Now a lot of people have told me I just need to change my primary o2's. which are those?!
Also what the part numbers for them? Would like to order them ASAP. Cannot deal with these mpg's any more
Please and thank you!

 

primary o2 sensors are the first sensors right after the exhaust manifold before the catalytic converter.


22691-A33B001 Bank 1 sensor 1 (by the firewall) for 2002-2003
http://www.courtesyparts.com/22690-o...ml?cPath=1956&

Same sensor fits bank 2 sensor 1 by the radiators.

 

Courtesy Nissan does not list actual part numbers so the above is wrong.

22691-8J101 x2

http://www.nissanpartszone.com/Page_...6&PageID=33062

 

You could also try cleaning them with MAF cleaner before spending $300 on replacing them.

 

Any truth to this? Id be willing to give this a shot if anyones actually done it and seen improvement

 

I've never done but if you plan on replacing them anyway, what could it hurt?

 

I am getting 24.8 mpg. with the same type of driving with my max, so you can do better. Let me know if it helps. Good luck!

 

How many miles on the car.....