Can somebody tell me where it is? I bought a new one because I saw them on the shelf, but now I can't find where it goes...duh! Thanks! :D

It's on the driverside of the upper intake manifold.

Follow the throttle cables away from the throttle body, they'll pass over a bolt for the air bleed on the cooling system.
Look at the hose leaving that air bleed bolt, the hose behind that (toward the rear) goes into the PCV Valve (it's threaded into the manifold).

Take off the hose and unscrew the old PCV Valve from the manifold and screw the new one in.

If you shake the old one it should rattle, that means its OK.

Thanks! I'll check it out tomorrow if I have some free time.

I just changed mine on Saturday. I did the same thing you are doing. I bought it, and then began digging around trying to figure out where it goes :p

It is right where Kerensky said it is, even with the last "N" on NISSAN on the intake manifold.

Since I didn't know what a PCV valve was, I decided to check things out on the internet (http://www.hastingsfilter.com/engineering/tsb_94-2r.html). So now I think I know what this does, but this article claims you are supposed to replace them every 10k miles. Huh? :confused: Thats once a year - pretty regular. I am quite sure I nor any of my family have ever had these replaced unless Jiffy Lube does it for free without telling you (*very* unlikely :D ). Whats up, is this just an example of a company trying to get you to buy a lot of their product?

I've never replaced one on any car! I just happened to see the Nissan one on the shelf at GI Joes, so I bought it. Typical of me...see it, buy it! :D

If 10K miles is once a year for you, you need to drive more! Sheesh! :rolleyes:

The Manual says to replace the PCV Valve every 30k miles.
They're cheap and pretty easy to do so its not that big of deal.