I need to change the Oxygen Sensors on my 2001 Pathfinder V6. I understand that their are four; two before the catalytic converter and two after.

Anyone have any suggestions for locating the two before the cat? I have the oxygen sensor socket for my rachet...just can't find these two sensors. I have changed out oxygen sensors on other vehicles and I am familiar with the job. I have read the Chilton Pathfinder manual and still unable to locate these bad boys and open for suggestions.

Thanks,

Jeff