I recently changed the fuel injectors, fuel filter, plugs and coil packs and she now runs like a scalped ape. BUT...I now have two error codes that keep coming back which is po130 and po136 which are
O2 sensors Bank 1 sensor 1 and Bank 1 sensor 2.

hoping someone can tell me where those sensors are located. Are they the upstream or downstream sensors?

thank you.

 

Check out this thread, posts 14 and 15. Should get you on your way.

https://maxima.org/forums/4th-genera...ima-p1168.html