Turbo wistle when engines idle

[Leon_MHX]

As said above im getting faint turbo whistle after then cars been run (up to temp) then when i stop and let it idle for a few minutes i can hear it. Then if i rev the engine it will go then usually come back a couple of minutes later.
Im pretty sure its the turbo as you hear it stood at the rear of the car, from the exhaust. Im just wondering wether this is normal behaviour for the car?

P.S - Its a 2.0l TDI Leon mk2

Thanks.

 

[air121005]

As said above im getting faint turbo whistle after then cars been run (up to temp) then when i stop and let it idle for a few minutes i can hear it. Then if i rev the engine it will go then usually come back a couple of minutes later.
Im pretty sure its the turbo as you hear it stood at the rear of the car, from the exhaust. Im just wondering wether this is normal behaviour for the car?

P.S - Its a 2.0l TDI Leon mk2

Thanks.

mine turbo whistles! they all do!
the pitch of the whistle should get higher as the revs do!

"comes back after a couple of minutes" , would have though it would return as soon as the engine settled

 

[Leon_MHX]

Why would turbo whistle increase while the engine stays idling?

 

[air121005]

Why would turbo whistle increase while the engine stays idling?

it increases on idle? by much??
do the revs change?

 

[Leon_MHX]

Revs stay the same, but you hear nothing then you get a noise as if the turbo has just spun up.

I could be sat idling for about 2-3 mins then i hear it.

 

[air121005]

Revs stay the same, but you hear nothing then you get a noise as if the turbo has just spun up.

I could be sat idling for about 2-3 mins then i hear it.

seems odd it takes 2-3 mins though
maybe on idle, it takes a while for pressure to build up very gradually to a point where the whistle becomes audible

i'm not familiar with the 2.0 Leon set up so couldn't be sure TBH

 

[Leon_MHX]

could be right, as when i rev it it will go. then if left it will make the whistling noise again

 

[benuk]

I have something similar I think, sounds just like it..

http://www.seatcupra.net/forums/showthread.php?t=206688

 

[Leon_MHX]

Hmm, it does seem similar. I dont really notice it when its cold, its more when ive been driving quite a bit and the engine is hot

 

[benuk]

Yes, I assumed it was only when cold as that was when I would be outside the car with it running most. I have since noticed when cold and when hot, but I only notice it sometimes.

 

[Leon_MHX]

Im pretty sure its nothing serious anyway ive been noticing it for a month or two now, and the car still drives fine

 

[benuk]

yeah its not a problem, seems to be quite common as quite a few people have said. Not everyone would notice it tho.

 

[Chriswaite130]

I get the same mate, just assumed it was normal my turbo seems fine