I was wondering if anyone could help me with the location and the possible challenge of replacing or just cleaning the oxygen sensors. Help would be much appreciated thanks

 

all 4 are on your mid pipe. usually a bitch to get out unless you have the midpipe out, or are on a lift. youll probably need a breaker bar. chances are if its not working, cleaning wont help.

 

Just make sure your exhaust is hot/warm that it is easier to unsrcew the 02 sensors. There is also a special socket with a slit on the side so that you can fit over the wire harness and it will make the removal easier

 

if your exhaust is hot/warm you are going to want sme gloves.