E350cdi turbo sound

Nathan Guymer

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Evening ladies and gents...


All E350cdi owners. Can anyone else hear there turbo spool a little inside the car when under load? Mines always done it even with new turbo recently fitted. Just asking out of interest.
 

amustali

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2009 ml320 cdi, iridium silver
Hi, i have a 164 Ml320 cdi, similar if not the same om642, and i can slightly hear it on accelaration, sounds good


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Nathan Guymer

Nathan Guymer

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Thank you for your reply. I was just worried that it was only me. It’s ok normal driving but if I put my foot down a little more that’s when I hear it. It doesn’t help that the turbo is mounted at the top of these engines either
 

amustali

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Yeah and it's not the only 642 ive been in


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Westheath

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Empty garage, awaiting new toy :)
Its when you think the police are behind you with thier sirens on
that you have a bad turbo spooling up n down :)
 

Capra

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W204 2013 C350 CDI Pan roof
Mine makes the same noise. Oddly I've never heard the woosh sounds that my previous cars have made when the turbo comes off boost.
 

LostKiwi

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'93 500SL-32, '01 W210 Estate E240 (RIP), 02 R230 SL500, 04 Smart Roadster Coupe, 11 R350CDi
They've all been turbo diesel.
Odd. Petrol cars I can understand as the closing of the throttle either stalls the compressor (giving a chirrup sound) of operates a dump valve to bleed excess pressure. As a diesel doesn't have a throttle plate (some later ones do though) you don't normally get the same effect.
 

Capra

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Odd. Petrol cars I can understand as the closing of the throttle either stalls the compressor (giving a chirrup sound) of operates a dump valve to bleed excess pressure. As a diesel doesn't have a throttle plate (some later ones do though) you don't normally get the same effect.
It was only a very mild swooshy sound. Not like the ones you get on an suberu.
 

GlosRichCLK

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I don't personally notice it over the chuggy rumble noise of the engine.
 

bembo449

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Odd. Petrol cars I can understand as the closing of the throttle either stalls the compressor (giving a chirrup sound) of operates a dump valve to bleed excess pressure. As a diesel doesn't have a throttle plate (some later ones do though) you don't normally get the same effect.
my range rover is very vocal , you can hear the tubby spool up/down , wastegate dumping and chatter on occasion too
 

Headhurts

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Cannot recall any noise from mine but that’s probably due to me not knowing what to listen for.
 

mercedes13156

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Just off topic..... Anyone else love the sound of a Harrier's Pegasus spooling down?
 

grayb

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Never noticed any turbo noise, at least with the windows closed...
 

Glynn350

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e350 cdi cabriolet 2012
I hear mine with the windows/ roof down, and especially if I'm driving alongside a wall for the noise to reflect off. Don't really hear it with the windows up.
 
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Nathan Guymer

Nathan Guymer

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Wow thank you everyone for your replies. I didn’t even noticed until I logged in today. I’m glad other people can hear it aswell.
 


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