coming on 100000 miles, what maintenance

[koda2000]

What about the PVC valves? Is there just 1? Would the Motorcraft KCV190 be the elbow parts?

IDK how the PCV valve is on the '04. My '01 Job 2 4.0L SOHC has a single PCV valve that twists into the rear of the driver's side plastic valve cover. It's a strange looking thing with a metal coolant pipe that wraps around it. Then there's an elbow that connects the valve to a plastic line and another rubber connector to connect the other end to my intake tube. As I recall it looks very similar to the KCV190 PCV hose.