V50 Engine 2.0D : - Whirring while accelerating

glypto · Nov 26th, 2008, 21:29

Hi,
when I press the throttle pedal a bit harder, I can hear some whirring sound (noise) - like if something vibrates. The sound disappears once I release throttle. I can't hear this sound if accelerating decently/slowly. No problems apart from this sound.
The car has just over 4000 km, I noticed this in last few days.
Any Idea what can this be?
Thanks

Clan · Nov 26th, 2008, 22:07

maybe the turbo charger? best take it in the dealer who should be familiar with it and advice ..

glypto · Nov 27th, 2008, 20:51

Thank you Clan, I guess it can be something with turbo as the sound suddenly appears when pressing the throttle at certain point (the sound intensity is constant) and then disappears when releasing the throttle .
Will take it to dealer next week, hope they won't tell me it's a regular sound

.
By the way, I can hear the sound even under 2000 RPM - does turbo charger work at there low revs ?

Clan · Nov 27th, 2008, 21:13

yes the turbo starts developing boost at just over 1000 rpm . see what an experienced ear says ...

glypto · Dec 5th, 2008, 10:15

Took the car to the Volvo garage today. Although the guy from garage said he can hear the sound, he thought he wouldn't have noticed it if I didn't tell him about it. Even diagnostic didn't show anything (I was expecting this as the whirring is only there when a gear is in and accelerating, I cannot hear it when pressing throttle pedal on neutral) .
Hmm, one year of warranty still left, so will see if it gets worse or not ...

Nov 26th, 2008, 21:29	#1
glypto Junior Member Last Online: Jul 29th, 2021 11:08 Join Date: Oct 2008 Location: Bratislava	Whirring while accelerating Hi, when I press the throttle pedal a bit harder, I can hear some whirring sound (noise) - like if something vibrates. The sound disappears once I release throttle. I can't hear this sound if accelerating decently/slowly. No problems apart from this sound. The car has just over 4000 km, I noticed this in last few days. Any Idea what can this be? Thanks

Nov 26th, 2008, 22:07	#2
Clan Experienced Member Last Online: Today 11:26 Join Date: Jun 2007 Location: L/H side	maybe the turbo charger? best take it in the dealer who should be familiar with it and advice .. __________________ My comments are only based on my opinions and vast experience .

Nov 27th, 2008, 20:51	#3
glypto Junior Member Last Online: Jul 29th, 2021 11:08 Join Date: Oct 2008 Location: Bratislava	Thank you Clan, I guess it can be something with turbo as the sound suddenly appears when pressing the throttle at certain point (the sound intensity is constant) and then disappears when releasing the throttle . Will take it to dealer next week, hope they won't tell me it's a regular sound . By the way, I can hear the sound even under 2000 RPM - does turbo charger work at there low revs ? Last edited by glypto; Nov 27th, 2008 at 21:02.

Nov 27th, 2008, 21:13	#4
Clan Experienced Member Last Online: Today 11:26 Join Date: Jun 2007 Location: L/H side	yes the turbo starts developing boost at just over 1000 rpm . see what an experienced ear says ... __________________ My comments are only based on my opinions and vast experience .

Dec 5th, 2008, 10:15	#5
glypto Junior Member Last Online: Jul 29th, 2021 11:08 Join Date: Oct 2008 Location: Bratislava	Took the car to the Volvo garage today. Although the guy from garage said he can hear the sound, he thought he wouldn't have noticed it if I didn't tell him about it. Even diagnostic didn't show anything (I was expecting this as the whirring is only there when a gear is in and accelerating, I cannot hear it when pressing throttle pedal on neutral) . Hmm, one year of warranty still left, so will see if it gets worse or not ...

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