Stop the press!! I made a mistake. A big mistake!! In my haste to get it all back together and go for a drive I forgot to put the dipstick tube and dipstick back. Yes I am the dipstick!! Loss of vacuum, rough idling,rough drive. So I replaced the dipstick and tube and went for a drive. PERFECT. Joy ...

Well that wasn't it. I replaced the oil seperator and non return valve to the brake booster with new Volvo parts and still I get a rough idle when warmed up.the interior lights also flicker slightly, in sync with the revs. My feelings are that these things needed to be done but there are still more ...

I have exactly the same problem with my s60 December 2000 build in Belgium.non turbo.i removed the intake manifold,fuel rail etc to get at the oil seperator box with the pcv valve incorporated in it Dismantling the diaphragm cover revealed a slightly split diaphragm,almost exactly the same as the pi...