Very loud whistiling noise in engine bay once car has been turned off!!

[4bella]

Just wondering if anyone knows or has any ideas about this loud whistling noise that goes on for 2 secs straight after my car has turned off.... i try hearing where it comes from and its definately near the turbo/manifold/compressor area....was thinking it might be the bearings....but my t28 turbo runs perfectly and boosts up properly and even on high boost....

[Sydneykid]

Air leak?

[WazR32GTSt]

turbo still spinning and slowing down maybe... ?

is it ball bearing?

[Cubes]

I had a really loud whistling noise once the car warmed up once.

Popped the bonnet couldn't see anything.

It was a pin hole in the top radiator hose.

What I found interesting is at first there was no signs of steam.

Just a damn loud whistling noise.

[The Mafia]

Just wondering if anyone knows or has any ideas about this loud whistling noise that goes on for 2 secs straight after my car has turned off.... i try hearing where it comes from and its definately near the turbo/manifold/compressor area....was thinking it might be the bearings....but my t28 turbo runs perfectly and boosts up properly and even on high boost....

mine does this too.. Sounds liek the car is sucking back or something..

Not sure but I'll monitor this thread and let you know if I find the problem.

Its just as you shut the motor off right? ass soon as it stops you get a suck back kind of noise?

[krzysiu]

I have it too. But its just the POD filter spittin the rest of the air out. Just makes a "shhhh" noise when turning off the eninge.

[drunkenmaster]

Is your coolant/water low by any chance?

[4bella]

It sounds just like a kookaburra. no joke, i know it sounds weird and funny but it sounds just like it and goes for like 2-3 seconds...even whe im just idling at the lights waiting...it sometimes goes off again....its definately near the turbo area....

[bless_you]

sounds like you could have a faulty idle or thottle sensor causing the drop in RPM when you are idleing... i have the same thing happen. may be a loose belt? havent had the time to investigate my noise though.

[Duncan]

It sounds just like a kookaburra. no joke, i know it sounds weird and funny....

Are you sure you didn't suck a kookaburra into your engine while you had the air filter off? That would cause a kookaburra noise.

I think it happens a lot with the bonnet scoop on the WRX sti as well, birds and small children often get sucked into the engine

[BBQ]

Check your belts, eg, alternator, power steering, A/C if all are ok maybe your timing belt pulley is seising up, it tends to try and jump off the pulleys on down revs,

How many km on the clock? if 100,000km it will be due for timing belt change.