Strange whooo sound on 2,4

[mkuzir]

Greetings!

I get a strange whooo sound, very similar to one you get when blowing air over empty glass beer bottle. Like howl does when its horny.
It happens only when I reach higher rpms, over 3500. It is audible the best when I punch the gas pedal to the floor and then release it completely after few seconds.

I remember that company's caddy developed this and they sold it then so we never found what it was.

Any idea what can this be? Anyone had this?

[nascot]

It's your turbo and should happen, unless it's really loud.

[mkuzir]

It is quite audible. I can hear it, for example, if I drive in sixth gear over 160 on a highway, then it is constant. It is also constant if I climb a hill in, let say, third gear but on higher rpms. I can also hear it anytime if I punch the gas pedal and then quickly release it when turbo boost pointer reaches over 1bar. In this case it lasts for a second and disappears.

I do not know what it is but is making me nervous. I'm just trying to gather some info before I go to the garage for a fix. Need to have at least some knowledge otherwise guy can tell anything he likes and I will believe.

[Alfadisiac]

That's happening on my 1.9. My boost gauge fluctuates in all gears, car struggles to pull between 1750rmp and 2000rpm. I can hear a whooshing noise coming from the engine too.

Have you had a look at all the piping from the turbo through intercooler and to inlet manifold for any splits?

It's not the case for mine though! And it's really annoying!

[mkuzir]

did not do any check for splits. I will try this to see if I can find something.