Crank case ventilation

Mr Craig · Post by **Mr Craig** » 09 Mar 2010, 09:39

I just cleaned the ETM on my 99 S80 2.9 yesterday. What a mess, the car had issues at idle for some time but where the ETM was located threw me for a loop. I finally took my trusty mechanics mirror and saw the clamp for the air inlet hose and said I could do this. The car seems to run better but I didn't drive it today since it is a beautiful day here in northern Indiana and my 67 El Camino was made for these days.
My question is, when I removed the air inlet hose off the ETM; the small hose that runs from the larger air inlet hose to a rectangular plastic "box" under the intake manifold; was full of crap. It is an oil, water and dirt mixture. It looks to me like it is a crank case ventilation system. I cleaned the hose out best I could without removing it (so I know that’s not good enough). Do I need a new "box" or what ever it's called? And are they available AM?
Thanks, you guys rock!

Post by **vegasjetskier** » 09 Mar 2010, 11:38

The box is the oil separator, commonly called the PCV. It plugs up with oil sludge after a while. You can remove it and try cleaning it if you don't break it taking it off. Or you can buy a new one for about $50. If it's plugged up and stays that way for long you will develop oil leaks either around the oil return hose for the PCV box, the camshaft seals, or the rear main seal. On my car it was necessary to remove the alternator bracket or break the PCV box off of the bolt that's behind the alternator bracket in order to remove it. If you break it off, you can use an angle grinder to remove enough metal from the bracket to get access so you can remove the bolt and reinstall the PCV box. Your car might have easier access since it's a non-turbo.

dtropnevad05 · Post by **dtropnevad05** » 10 Mar 2010, 19:28

You will need to pull the intake manifold to get to this here is a link showing the parts [img]www.ipdusa.com/Volvo-S80-1999-2006/Engine/PCV-System/PCV-6-Cylinder-Non-Turbo/p-76-576-925-5368/[/img] but you can use any of the vendors at the top. I have bought from two so far and both where fast and very nice to deal with.

Don