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Frosty mornings make the turbo whistle on the hdi's I have owned -fantastic sound - is this available on an mp3 download
Don't think the turbo is supposed to whistle.
And don't see why outside temperature would cause it?
Perhaps air density?Confusedcratch:
I had it on mine, it was a split turbo intake rubber
[+] 1 user says Thank You to corkgsxr for this post
Thought it was probably a fault rather than a design feature.Confusedillyme:
I would investigate before it gets worse.
(24-03-2012, 11:36 AM)j90xxx Wrote:  Thought it was probably a fault rather than a design feature.Confusedillyme:
I would investigate before it gets worse.

Nope - this is on three brand new vehicles
Maybe it's the new twin scroll turbo...?
[fon‌t=Tahoma, Calibri, Verdana, Geneva, sans-serif]The Older I get the Better I Was!  Cool [/font]
Brand new does not mean fault free.
If my new car whistled, it would be straight back to Citroen.
If it is making that noise, then something is leaking/venting/escaping.
Don't think turbos do that....
(Could be wrong.)
I've always been able to hear mine, more so since the decat.

Lots of other TD's I've driven it's been audible to a greater or lesser degree
same here mine does it but its not loud, just a faint whistle. Its not a constant whistle just a quick whoosh (technical term) as it does whatever it does. Also had it on 2 renaults and a xsara hdi so seems pretty normal to me plus the buses i drive everyday making a whistle noise.
They are all broken!

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