That PCV valve looks a bit different too- like it just pushes into place, held by a grommet. The PCV valve on my 2002 threads into place. It's got a 3/4" or so nut at the base that I had to attack with a crescent wrench. I did a EGR decarb, throttle body clean-out and a PCV valve & line clean out last week on my 2002. It took less than 15 minutes & cost about $3. This time I used a can of "CRC Air Intake Cleaner" from advance auto (for fuel injected & teflon coated throttle bodys). Everything is nice & shiny again
. I've found it helps to have the truck warmed so the spray cleaner evaporates & doesnt pool in the intake when you clean around the throttle plate & EGR outlet tube. There's not much you can do about the carbon in all the nooks & crannies inside the intake- aside from pull the top off the upper intake & clean it all out by hand / throw it in a parts washer. I pull off the EGR valve & spray out the EGR tubes with the truck not running- but mine has not been really plugged, so it works well that way. Give the PCV line a spray with the truck running to ensure that is clean. It's a good idea to do this cleaning just before an oil change in case you get any solvents & gunk into the oil. Your truck may start hard the first time after a good cleaning until all the cleaner evaporates! G/luck
Joel