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Yes, PCV valve is on the passenger side cover attached to a hose connecting to intake manifold . If I am not mistaken , Super Duty PCV valve 1999-2003 are the same and it is Motocraft EV-233 . I got mine from O'Rielly Auto . Personally , I would not substitute it with an aftermarket PCV . Check the following while you are changing it ;
1- Check PCV hose and any attached "elbows" (plastic and/or molded rubber ) for leak/deterioration , if so replace .
2- Find the "other PCV hose" on the "drivers side" cover which is also part of the PCV system ( no PCV valve there ) . Take a look at the fitting . Make sure the fitting is air-tight and attached hose is in good condition .