Replaced PCV valve and still running poorly
I followed this thread to finding my PCV valve... Which I wasn't aware there are four versions (Metal, plastic, plastic with coolant around it and plastic with electronic connector). My 2002 Explorer Eddie Bauer 4.0L v6 needed the plastic one, which the store said they would have to special order (O'Rileys) so I ended up purchasing the coolant one and pulled off the metal piping. The original was a pain to remove, but a pair of pliers helped twist it off. The new one twisted in place with no problem.
The truck is still having difficulty starting (Hard start) and running rough. Rough when first started (cold) and when driving for about 20 minutes. I live in Minneapolis, so 20 minute drives are common. I recently (not since PCV replacement) hooked up to computer and it gave me O2 sensor issue. I haven't replace the sensor because from reading here I started with PCV valve.
Prior to my trying to locate the PCV valve the truck was running fine, but had hard starts. I am thinking something was touched while reaching around for the PCV... I didn't remove anything while working on the PCV task.
Any thoughts or suggestions?