Hi All,
Congrats for your very useful info and comments re the swirl arm thing. I had a "engine system service required" message on my wife's 2008 XC90 D5 and going through your threats i managed to at least find where this thing on the engine. Swirl arm apparently is on, no sign of it falling apart and it does move fully back and forth when switching on/off. What i noticed when switching off the engine is a prolonged high pitch sound coming from exactly the swirl motor area, which stops after a few seconds...any ideas???
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