Mystery noise (Video)

_qWERTY · Feb 21, 2013

Does anyone know what the hell this noise is?

2008cc - Holset HX35 - IECA1s - Lugtronic

_qWERTY · Feb 22, 2013

The car drives fine. I only get that sound when I'm coasting in gear. If I get on the throttle even only a little bit, it goes away.

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One-Eight GTI · Feb 22, 2013

WTF thats a weird noise... With engine cool try removing coolant resevoir cap and see if it stops

_qWERTY · Feb 22, 2013

I'll try that. It sounds like its coming from by the throttle body area.

[DubSTeR]01 · Feb 22, 2013

pcv valve maybe?

almost sounds like air escaping by a connection or something.

or a bearing...

_qWERTY · Feb 22, 2013

No pcv valve - have a line from the head and a line from the crank case going to a vented catch can

Dub-Nub · Feb 24, 2013

Is the sound constant when you keep RPM's steady at a certain number or is it only when you bump the gas and let go?

_qWERTY · Feb 24, 2013

Yeah its steady when coasting in gear. As soon as I touch the throttle the sound goes away.

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Dub-Nub · Feb 24, 2013

_qWERTY said:
Yeah its steady when coasting in gear. As soon as I touch the throttle the sound goes away.

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Have you checked all the belts or done a boost leak test? those would be my next steps.

_qWERTY · Feb 24, 2013

Yeah belts are fine. Guess a boost leak test is next.

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Mystery noise (Video)

_qWERTY

_qWERTY

One-Eight GTI

_qWERTY

[DubSTeR]01

_qWERTY

Dub-Nub

_qWERTY

Dub-Nub

_qWERTY

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