OVERBOOST?
check that nobody as fiddled with the wastegate arm / fitted a turbo bleed valve or such like + the condition on the 4 vacuum hoses.
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2001 Volvo S60 T5 SE 2.3 Geartronic (Scrapped)
2007 Volvo S60 T5 SE 2.4 Geartronic (Sold)
2008 Volvo V70 D5 SE Sport Geartronic (Current)
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