For those of you who have replaced any one of these items, did you put plumber's tape on your ECT just to make sure it didn't leak? And did any of you replace the "crankcase vent oil separator element" when you replaced your PCV valve? Thanks for the info.
Put Teflon tape on the threads of the ECT Sensor when you replace it. You don't want coolant spraying everywhere. Also, you will need a really big/deep socket to remove the ECT. I can't remember the size, but when you go to the auto parts store, take the new ECT to the tool section and find a deep socket that will fit. Or if you have a open end wrench that will fit, i think that will work. But it's a tight fit. Socket is really easy. Took me 5 minutes to remove/install.
Haven't done the PCV before. But I think the PCV is the "crankcase vent oil separator element". PCV = Positive crankcase Ventilation Valve. Probably two names for the same thing.
The ECT sensor comes with sealant already on the threads, plus its a tapered seat. Don't put anything else on the threads, it will just make the thread diameter oversized and harder to fit in the tapered seat.
Don't overtighten it either! It will never bottom out on anything, it just gets tighter the further you screw it into the tapered seat.
You can just clean the exisiting crankcase vent oil separator element with solvent and reuse it. No need to buy a new one. I used a spray can of carburetor cleaner to clean mine.