Thread: 2018 540 D xDrive Resonating sound at speed.
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      05-19-2020, 09:56 AM   #6
ski1972
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Drives: M5 finally
Join Date: Nov 2010
Location: new york

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Does the noise change with the RPM under the load ( transmission engaged ) ?
Mine does that and is 100 % fuel pump ,
I also reed someone have noise from oil pump .
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