Turbo

[evdama]

Frosty mornings make the turbo whistle on the hdi's I have owned -fantastic sound - is this available on an mp3 download

[j90xxx]

Don't think the turbo is supposed to whistle.
And don't see why outside temperature would cause it?
Perhaps air density?cratch:

[corkgsxr]

I had it on mine, it was a split turbo intake rubber

[j90xxx]

Thought it was probably a fault rather than a design feature.illyme:
I would investigate before it gets worse.

[evdama]

Thought it was probably a fault rather than a design feature.illyme:
I would investigate before it gets worse.

Nope - this is on three brand new vehicles

[Ol'Jeffers]

Maybe it's the new twin scroll turbo...?

[j90xxx]

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.)

[Coco]

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

[BerlingoHDI]

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.

[j90xxx]

They are all broken!