S40 (New) Engine 2.0D : - whistle?

fenton_jd · Apr 16th, 2009, 21:41

There's a medium pitched whistling noise (lasts for approx 1 second) whilst accelerating. Its intermittent (but fairly frequent) and more so at about 2.5k + revs.

The turbo also seems a fair bit quieter when it spools up, and I've noticed that power seems less of a surge than it used to. Needs to be revved more to make brisk progress.

Would a vaccum leak give these sorts of symptoms? This is my 1st turbo diesel engined car so I've lots to learn.

At first, I thought this was a 'dumping' noise, but it only happens approx 2 seconds after starting to accelerate rather than when I change gear or lift off

Thanks in advance. I have the 2.0D S40 ('05 plate)

colmmod · Apr 16th, 2009, 22:38

I have the same problem. started like that yesterday but it got worse with loss of power and lots of smoke.

DeeJ · Apr 17th, 2009, 17:36

I get a whistle when accelerating from 2-2.5k revs, but I have no loss in performance so I believe this to be the normal sound from the turbo

bryand · May 3rd, 2009, 00:03

My C30 2.0D has been remapped and I get the whistle when pulling hard between 2000 and 2600 revs. Sounds like a lot of air going through a small hole in a hurry. Which is exactly what it is. Not a problem.

Apr 16th, 2009, 21:41	#1
fenton_jd turkeyspace.com Last Online: Nov 5th, 2016 16:41 Join Date: Apr 2009 Location: Gloucester	whistle? There's a medium pitched whistling noise (lasts for approx 1 second) whilst accelerating. Its intermittent (but fairly frequent) and more so at about 2.5k + revs. The turbo also seems a fair bit quieter when it spools up, and I've noticed that power seems less of a surge than it used to. Needs to be revved more to make brisk progress. Would a vaccum leak give these sorts of symptoms? This is my 1st turbo diesel engined car so I've lots to learn. At first, I thought this was a 'dumping' noise, but it only happens approx 2 seconds after starting to accelerate rather than when I change gear or lift off Thanks in advance. I have the 2.0D S40 ('05 plate)

Apr 16th, 2009, 22:38	#2
colmmod New Member Last Online: Jun 25th, 2009 15:25 Join Date: Dec 2008 Location: Donegal	I have the same problem. started like that yesterday but it got worse with loss of power and lots of smoke.

Apr 17th, 2009, 17:36	#3
DeeJ Trader Last Online: May 19th, 2011 21:09 Join Date: Dec 2008 Location: Stoke On Trent	I get a whistle when accelerating from 2-2.5k revs, but I have no loss in performance so I believe this to be the normal sound from the turbo

May 3rd, 2009, 00:03	#4
bryand C30 devotee Last Online: Jan 2nd, 2012 09:59 Join Date: Sep 2007 Location: Loughborough View Photos By: bryand	My C30 2.0D has been remapped and I get the whistle when pulling hard between 2000 and 2600 revs. Sounds like a lot of air going through a small hole in a hurry. Which is exactly what it is. Not a problem.

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