i have a faint whine like a police siren when the turbo slows down when your slowing down in 2nd and 1st its not really loud but definatly a police siren sound, doesnt do it when accelerating just get the normal whistle not the whine, it is loader when the engine is cold and gets quiter after about 5 mins of driving, been doing this for 3000 miles since i got the car, is it something that will get worse and then i will need a new turbo or could it just stay like that from now on, just a bit concerned about the turbo going bang, please help guys.....

Edited 20 September, 201114 yr by nathan willard

Sounds more gearbox related if it only does it slowing down.

Matt

Sounds more gearbox related if it only does it slowing down.

Matt

hi matt no definatly not gearbox cos it does it if you rev it in neutral at stand still, def turbo noise m8.

Edited 20 September, 201114 yr by nathan willard

I've had my vrs for a couple of years. A few weeks back mine started doing a similar thing. A bit of a whining noise when cold that goes away once warmed up. Other than that, performance is normal.

I trawled through the forum and found someone that says his started doing this at about 40k miles and is still doing it but without further issues at 70k miles.

I've got a turbo supplier sorted that can do a Garrett for £495 plus £200 fitting just in case. So far it's not got any worse and that's over about 12 weeks.

I think the whining is a sign of some shaft/bearing wear or a build-up of carbon that maybe just touches the turbo blades when cold. I've been checking the oil level and it's not burning any more oil than normal so the turbo seals appear OK.

I'd just keep your ears on it for a while and see how it goes. It's probably nota sign of a likely catastrophic failure, more likely a slow deterioration that you can just assess longer term.

hey, thanks for that detailed reply, fingers crossed then should be ok.

Might also be aux belt tensioner or spraque clutch on the alternator.