Moaning!?

[B300ABT]

My RS2 makes a strange moaning noise at around the 3000rpm mark. It sounds like some sort of resonance; any ideas what might be the cause.... and cure?
Cheers

[s2_bo]

Is it coming form the engine or the exhaust system?

My 3" SS system does the same at about 3k but then goes again at 3.5k.

[Keeper of The Kitten]

Check for wife/girlfriend in passenger/back seat area.

Then check to see if the moaning is the regular kind or the better (but much rarer) sort...

__MDC__

[Ski]

Dump Valve

[B300ABT]

Is it coming form the engine or the exhaust system?

My 3" SS system does the same at about 3k but then goes again at 3.5k.

That's the difficulty - I don't know.....but like yours it goes away at either higher or lower revs. As it's the standard system I thought it unlikely to be exhaust.

What's the score with the Dump Valve? Why would it resonate?

And as for women - no such luck in this one....yet.

Cheers

[Ski]

around 3k rpm a huming / moaning noise from the front of the car is usually the DV giving up the ghost.

[s2_bo]

around 3k rpm a huming / moaning noise from the front of the car is usually the DV giving up the ghost.

Thanks Ski,
Thats good to know,

I have only had this S3 one for about 4 months but i guess it could be on its way out.
I also get a very strange sound when i stop accelerating and boost drops slowly below 0 and in to vacuum. This sound is similar to the noise Chewbacca from Starwars makes and lasts as long as i keep the pressure just bleow 0 bar....

[B300ABT]

around 3k rpm a huming / moaning noise from the front of the car is usually the DV giving up the ghost.

It was replaced a year ago....along with virtually every other possible culprit.
Hope to see company that did the work next week in order to ascertain what might be amiss!

[Ski]

Let me know how it goes.

I replaced mine and the noise was descreased but still there. Im sure its not causing harm.

Ive noticed a lot of people get this problem here, after replacing DV, some never experience the issue again, some do. im one of the ones who still has the issue but not as bad.

Lots of recommendations on here for a s3 DV which i might try next, but tbh i hardly ever hear that noise any more.