E350cdi high pitch quiet whistle

[Nathan Guymer]

Good morning.

Does any one else here have a very very quiet but high pitch whistle at idle and very low revs when driving? Most people can’t hear it but it sounds like a very small hole somewhere in the exhaust system behind the turbo..

Mainly heard when under the car or stopped next to a wall.

Thank you

 

[Glynn350]

Nope, my 350 doesn't do that

 

[Nathan Guymer]

When I say whistle it is barely heard that’s how quiet it is mate

 

[dry run]

It's when it stops whistling that you need to worry

 

[Nathan Guymer]

It's when it stops whistling that you need to worry

Does yours make this noise too mate? Is it normal?

Thank you

 

[Glynn350]

Do you get under the car with the engine running?

 

[Nathan Guymer]

Do you get under the car with the engine running?

No I dangle my partner out the window so she can listen.... What I’m saying is at idle it can be heard clearer under the car.

 

[Srdl]

Can’t say I’ve noticed it with mine.

 

[dry run]

Does yours make this noise too mate? Is it normal?

Thank you

Can't say I've noticed it, but then I tend to have the music on pretty lod most of the time.

I wouldn't worry though.

 

[JBell]

Fuel pump???

 

[Headhurts]

No noise from mine and I’m a very fussy person plus it’s still under warranty so would be straight into dealership.

Robin

 

[Nathan Guymer]

I’ve uploaded a video to YouTube. You can hear the whistle mainly heard from under the car and only at idle.

If anyone has any idea what it could be then please let me know.