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S60 & V60 '11-'18 / XC60 '09-'17 General Forum for the P3-platform 60-series models |
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Dump Valve NoiseViews : 843 Replies : 2Users Viewing This Thread : |
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Dec 12th, 2022, 14:18 | #1 |
New Member
Last Online: May 13th, 2024 15:55
Join Date: Jul 2015
Location: Thetford
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Dump Valve Noise
My 2010 diesel engined XC60 has recently started to make a whistling/hissing noise when changing up a gear whilst pulling hard. It sounds very much like the dump valve operating on a previously turbocharged petrol engined vehicle, however as a diesel engine doesn’t need a dump valve I am puzzled as to what can be the cause. Any ideas?
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Dec 12th, 2022, 15:33 | #2 |
Volvo S40
Last Online: Jun 21st, 2024 22:04
Join Date: Mar 2015
Location: Chichester
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Sounds like a possible split in one of the air pipes causing an air leak.
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Dec 13th, 2022, 07:41 | #3 |
New Member
Last Online: May 13th, 2024 15:55
Join Date: Jul 2015
Location: Thetford
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Have checked the hoses and there is nothing obvious that I can see. Next job will be to drop the intercooler.
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Tags |
blow off valve, diesel, dump valve |
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