Turbo Issues? Faint Siren Sound
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03-12-2014, 11:46 AM
Drives: E91 320D M Sport TiAg
Join Date: Jun 2013
If it's at low RPM, it's far more likely to be belt related.
How do I know? My aux belt tensioner was going and whining.
As I said, listen for where the noise is, can easily rule out a turbo as no belts are near it really.
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