In-tank pump is far more likely to fail (from around 120,000) than the high pressure pump. One test of the tank pump, run the car low on diesel. If it stops with about 1/8th tank left it's duff.
Mine was intermittently faulty for ages so was a git to trace.
Most common fault on these is a neglected fuel filter.
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2009 Volvo V70 D5 (Polestar 225bhp) r-design 180,000 miles
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