oxygen sensor????

[tisonvelez]

Does anyone know where the upstream oxygen sensor is located on a 1998 I30? Also is there more than one upstream? Thanks everyone

[maxhopper]

There is one below each of the exhaust manifolds (in the y-pipe). Bank 1 is the side nearest the firewall. Bank 2 is the one nearest the radiator.

[matt.sliger]

I am in the process of replacing a o2 sensor as well. I have been doing my research. I found a post on here that has the manual you need. Follow the link below, then go to the FE section and scroll to page 10. A full schematic of the exhaust system is shown. BTW, you will need Adobe Reader to view. Hope this helps.

http://www.nicoclub.com/FSM/i30/2001/