Replacing a few Emissions Components: O2 Sensor and PVC

[BootyDo]

Hi All,

Getting set to do my fuel filter for what I can only assume is the first time, (92,000 miles right now), and figured I'd look into swapping the O2 Sensor(s) and PVC. Only thing is I cannot find any info for the PVC valve for the life of me! Does anyone know where the heck it is on the 4.6 V8? Also, i was only going to worry about the upstream sensor(s). But does anyone know if it's just one or multiples?

Any insight is very much appreciated!

 

[swshawaii]

http://www.explorerforum.com/forums/showthread.php?t=364053&highlight=pcv+valve

http://www.explorerforum.com/forums/showthread.php?t=431449&highlight=pcv+valve

 

[BootyDo]

Thanks swshawaii! Wonder why that didn't appear in my searches. Anyone know if the upstream O2 sensor(s) are only accessible by removing the tires and well shrouds?