Yeah, Ford really decided to make changing the pcv valve on these engines a real pita! It took me 10 mins just to find mine and that was after I was told where to look. To get the old one out (which appeared to be the original with 128K on it) I first removed the plastic engine cover, then disconnected the 2 small hoses that go from the valve to each side of the upper intake plenum. Next I pulled the plastic "T" fitting off the top the pcv valve and removed the "T" with the 2 hoses attached. There is a grey plastic clamp (it's hard to discribe, but it has teeth on it and kinda ratchets closed) the clamp holds the valve in a rubber hose and supports it. To release the clamp I pushed down on one side while pulling up on the other. The clamp remains in place after it's released. The pcv valve is attached to a rubber hose, which I assume goes into the back of the engine somewhere. Hold the hose and twist the pcv valve (like you would a stuck spark plug wire) to help release it from the rubber hose and then pull it upwards being careful not to pull the hose out from the engine. I suggest you get your new pcv valve from Ford (they're plastic) because the metal auto parts store valves tend to make noise and the plastic "T" fitting is very difficult to attach to the valve. Install in reverse order. It took me about 1 hour to do this the first time, but I think I could do it in under 15 mins now.
