Hi, most of you may remember my post about a weird noise after i shut off my engine.

I took the car in for service yesterday, they said everything's fine.

however the sound is still there and it concerns me.

here's a video of it: it starts almost right after i shut it off.

video

 

very strange sound and im sure its not meant to be there, it does however sound like a fan slowing down

 

I kinda like it.. does ECS sell that mod?

 

if i hd to take a guess at it, i would think it's the turbo slowing down, because it comes from that area.
Is it possible for the turbo to not get enough lubrication?

 

Thats not the coolent sound and not the turbo/intake. It sounds like some squeeking as it slows. If you can give a discription of where it is coming from (inside car, engine bay, or elsewhere) would help. Check your fans and belts with the hood open and someone else turning off the car.

 

I'm going to have to say... Muffler Bearings.

Have someone else shut it off while you are under your hood and see if you can narrow it down a little more. I agree that it sounds like a rotating part (fan) that needs to be lubed up.

 

MUFFLER BEARINGS? explain what these are plz...

The sound comes from behind the engine, where the turbo and manifold and all the heatshieling crap are.

sure it can't be the turbo cincy?

its really weird, it seems like it occurs randomly, but never when the engine's cold.
Sometimes it's loud, sometimes very faint. the video is about as loud as it ever gets.

You guys think it's bad to drive the car with it?

 

The i never heard any turbo make that noise.Are you still makeing normal boost and spool?

 

You know what, you might want to check the turbo, the blades maybe damaged. A turbo slowing down ususally sounds like a slowing constint hhhiiiiiissssss

 

well i don't have a guage to check, but the butt dyno tells me it's the same, and the dealer didn't get any engine codes.

how would i go about to check the turbo?