Help diagnosing whine/ siren

RichRoberts44 · 01-23-2020, 02:40 PM

Hello all,

Read a lot of similar threads but hoping someone has experienced something similar. I have a siren like noise that literally suddenly developed. At first I thought an electric car was behind me. Now I feel like traffic is going to start pulling over when I'm behind them!

The noise is present faintly at idle and is linked with engine rpm. As soon as I tounmch the accelerator it sounds. I can't hear it at high speeds but that might be because of road noise. Performance is as normal. I'm thinking it could be a pulley? Air con on and off doesn't change anything. Any suggestions? Link to video below.

https://youtu.be/S6WOXxEN6bU

Thanks

BM3Rrrr · 01-23-2020, 05:21 PM

search: turbo siren or whine.
Sounds like you have this

01-23-2020, 02:40 PM	#1
RichRoberts44 New Member 0 Rep 13 Posts Drives: 320D TOURING M SPORT Join Date: Aug 2018 Location: Worcs iTrader: (0)	Help diagnosing whine/ siren Hello all, Read a lot of similar threads but hoping someone has experienced something similar. I have a siren like noise that literally suddenly developed. At first I thought an electric car was behind me. Now I feel like traffic is going to start pulling over when I'm behind them! The noise is present faintly at idle and is linked with engine rpm. As soon as I tounmch the accelerator it sounds. I can't hear it at high speeds but that might be because of road noise. Performance is as normal. I'm thinking it could be a pulley? Air con on and off doesn't change anything. Any suggestions? Link to video below. https://youtu.be/S6WOXxEN6bU Thanks
	Appreciate 0 Tweet Quote

01-23-2020, 05:21 PM	#2
BM3Rrrr Davy Jones, Giant Squid 271 Rep 913 Posts Drives: a Pirate Ship Join Date: Jun 2015 Location: The Isle of Tortuga iTrader: (0)	search: turbo siren or whine. Sounds like you have this __________________ 2010 e90 335i LCI - xHP - Mishimoto - BMS - CPe - Turbosmart - MHD - Eibach - Koni - VMR - LUX
	Appreciate 0 Quote