split in the big (about 50mm diameter) flexible rubber hose betwen the outlet of the intercooler and the engine.... had it on a V40 and was a pig to change.....could also be the one going in to the intercooler

Sorry, it is an early 2016 D5, so no PowerPulse.

+1 more for split in intercooler hose.

it can be intercooler hose, some people referring part number 32222272 that fails. (right side)
Or better check also other hoses, 32222271 and 32222269

usually in some time after hissing sound there can be check engine sign on dashboard.

It is an early 2016 and does not have PowerPulse.
Initially I thought it might be a Turbo hose. I had a Turbo hose replaced 2 years ago. And yes it was a similar noise, however this new one has also a mechanical component to it.

Thank you for the advises on the hoses.
I will try and have a look.
I find it difficult to find images of the 2 litre D5 engine on the net.
Does anybody has a source please so that I can orientate my-self?
Many thanks.

Update
 

Took the XC90 back to Volvo Waylands in Bristol.
This time they identified the cause of the engine noise:
-Both turbochargers leaking, new turbos required £4000 incl. labour/ Vat
-EGR pipe split £140

And that on a car which has just 86k miles on the clock!
:mad:

Blimey.

I would ring an independent and get them to quote with a bill that large.

I would take it to an indie and get them to send the turbos to turbo techniks for a rebuild, about £500 each with warranty

Hi!

Were really the turbos the main problem? I have a very very simmilar noise on my V90 (2017 - D3) around 2000-2500 rpm (only when I drive = under load at cca 3/4 throttle).

I notice this noise only when it is cold outside, when engine is cold. After a few minute driving ist this noise away. Or it is not hearable.
I have thought, that it is a small leakage on exhaust manifold. (I havent checked it yet...) But now I am scaryied.