My Ford Ranger Edge (2004, 2WD, Automatic Transmission, 3.0 V6) has been idling rough once it reaches normal operating temperatures. I've installed new sparkplugs, new sparkplug wires, new ignition coil, new Idle Air Control Valve and cleaned the MAF sensor. Unfortunately none of these has had any effect on the condition. I've ordered a new PCV valve from O'Reily Auto Parts (Advanced Auto didn't carry and couldn't order the part). Any questions and/or suggestions relevant to this problem would be welcome. Thanks!