Hissing sound!

bod · Nov 11th, 2016, 18:03

Though I had a puncture yesterday, parked car and when I got out could here a loud hissing noise , rushed round to local garage, still hissing when I got there, but had stopped when the chap came out to have a look at it! Looked at tyres no probs, plus the car would say if It had lost too much air.
Doing it again today, so I have to take it in on tue AM for them to check it over.

Anyone else had anything like this? It hasnt got air suspension that that rules that out.

Thanks Andrew

nu11eaf · Nov 11th, 2016, 18:17

Quote:

Originally Posted by bod

Though I had a puncture yesterday, parked car and when I got out could here a loud hissing noise , rushed round to local garage, still hissing when I got there, but had stopped when the chap came out to have a look at it! Looked at tyres no probs, plus the car would say if It had lost too much air.
Doing it again today, so I have to take it in on tue AM for them to check it over.

Anyone else had anything like this? It hasnt got air suspension that that rules that out.

Thanks Andrew

Most likely a leaking pipe connection from power pulse system, assuming you have a 2017 power pulse model, another guy on here had this problem about a week or so back, It was not a big issue and easily sorted out.

bod · Nov 11th, 2016, 23:08

That sounds like it then, it is a 2017 MY with power pulse.
Wonder if it is anything to do with the fact I got it moving quite fast on a private road the night before?

nu11eaf · Nov 12th, 2016, 00:01

Quote:

Originally Posted by bod

That sounds like it then, it is a 2017 MY with power pulse.
Wonder if it is anything to do with the fact I got it moving quite fast on a private road the night before?

Could well be, it did cross my mind if you had tested out the power. It should still be able to handle this but the odd lose fitting on these pipes looks to be cropping up.

Zoo21 · Nov 12th, 2016, 04:19

Quote:

Originally Posted by bod

That sounds like it then, it is a 2017 MY with power pulse.

Excuse my ignorance- power pulse and connection to hissing? - is this something to do with hydraulics or emissions or (pipes?)...

Konst · Nov 12th, 2016, 06:51

Quote:

Originally Posted by Zoo21

Excuse my ignorance- power pulse and connection to hissing? - is this something to do with hydraulics or emissions or (pipes?)...

No, air compressed in a small tank connected to the turbo with hoses.
see here:
http://www.volvoforums.org.uk/showth...ght=powerpulse

nu11eaf · Nov 13th, 2016, 12:32

Quote:

Originally Posted by Zoo21

Excuse my ignorance- power pulse and connection to hissing? - is this something to do with hydraulics or emissions or (pipes?)...

To overcome turbo lag Volvo have fitted a compressed air reservoir tank which is kept topped up by an electric air pump, when you press the accelerator for rapid acceleration the air is released from the reservoir and injected into the exhaust gas inlet side of the turbo to spin up the turbo very fast to overcome the lag, this is not activated in normal gentle acceleration, a bit like kickdown on the gearbox. The system is called Power Pulse and fitted from MY 2017 models.
There has been at least one report on here of leaking pipework on this system that was quickly and simply addressed by volvo dealership.

gaby · Nov 13th, 2016, 19:00

Quote:

Originally Posted by nu11eaf

The system is called Power Pulse and fitted from MY 2017 models.

All 2017 models?

Lexman8 · Nov 13th, 2016, 19:09

Quote:

Originally Posted by gaby

All 2017 models?

Only the D5.

neon · Nov 14th, 2016, 00:52

And it works great, really impressed with the engine.

Nov 11th, 2016, 18:03	#1
bod Junior Member Last Online: Yesterday 02:06 Join Date: Feb 2008 Location: Ripon	Hissing sound! Though I had a puncture yesterday, parked car and when I got out could here a loud hissing noise , rushed round to local garage, still hissing when I got there, but had stopped when the chap came out to have a look at it! Looked at tyres no probs, plus the car would say if It had lost too much air. Doing it again today, so I have to take it in on tue AM for them to check it over. Anyone else had anything like this? It hasnt got air suspension that that rules that out. Thanks Andrew

Nov 14th, 2016, 00:52	#10
neon Premier Member Last Online: Apr 2nd, 2023 10:37 Join Date: May 2016 Location: Yorkshire	And it works great, really impressed with the engine. __________________ MY17 XC90 D5 Powerpulse Inscription, Polestar, Osmium Grey, Blond, Walnut, Xenium, Winter with HUD, Auxiliary Heater, Homelink, Heated Rear Seats, Subwoofer, Apple Car Play, Tinted Windows

Nov 11th, 2016, 23:08	#3
bod Junior Member Last Online: Yesterday 02:06 Join Date: Feb 2008 Location: Ripon	That sounds like it then, it is a 2017 MY with power pulse. Wonder if it is anything to do with the fact I got it moving quite fast on a private road the night before?

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