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Can anyone identify this sound correctly?

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Old 11-24-07, 04:06 PM
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ZGN
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Question Can anyone identify this sound correctly?
This is a vacuum leak. Can anyone guess where?
This should be an easy one. Let me know what you think.


Hear attached.


Click here http://www.dealsgaprotaryrally.com/sound/Recording4.wav
and here http://www.dealsgaprotaryrally.com/sound/Recording2.wav

ZGN

www.MRCCAL.com
Last edited by ZGN; 11-24-07 at 04:15 PM.
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Old 11-24-07, 04:36 PM
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Ouch.
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Old 11-24-07, 05:01 PM
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oh god please tell me thats not your car!... lol mine sounds similar but not so much screechy
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Old 11-24-07, 05:25 PM
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that sound makes me want to punch a baby.... plus it reminds me of a dinosaur.
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Old 11-24-07, 05:37 PM
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Lets see if anyone guesses it correctly
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Old 11-24-07, 05:43 PM
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Talking
Originally Posted by herblenny
Lets see if anyone guesses it correctly
These guys will have no clue!
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Old 11-24-07, 05:58 PM
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sounds like a gasket is acting as a reed when air passes by it, check for a vacuum leak
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Old 11-24-07, 06:15 PM
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Did you even read the post^?
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Old 11-24-07, 08:11 PM
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Nevermind...
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Old 11-24-07, 08:18 PM
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Do you have a boost gauge? do you know what your vacuum is at idle? Should be around 16/17 mmHg give or take a couple.

That screeching sounds absolutely horrible.
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Old 11-25-07, 09:58 AM
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My guess is the "wagon wheel" check valve behind the air control valve - misaligned or something funny like that.

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Old 11-25-07, 10:04 AM
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Awful hard to pinpoint a screeching problem like that from a audio. I am convinced it is NOT a vacuum leak though. Rather a bearing or bushing. Check your idler pulley first and go from there. Maybe Pilot bearing if it's a manual.

Using a mechanics stethoscope would help you too.

Let us know what it is.


later
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Old 11-25-07, 10:14 AM
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Bov?
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Old 11-25-07, 10:22 AM
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How long must we be kept in suspense?
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Old 11-25-07, 10:40 AM
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Originally Posted by badddrx7
Awful hard to pinpoint a screeching problem like that from a audio. I am convinced it is NOT a vacuum leak though. Rather a bearing or bushing. Check your idler pulley first and go from there. Maybe Pilot bearing if it's a manual.

Using a mechanics stethoscope would help you too.

Let us know what it is.


later
I would guess around this. Maybe a water pump or belt. Hard to tell in an audio.
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Old 11-25-07, 10:50 AM
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'They' keep insisting it IS a vacuum leak. The only question is...where.
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Old 11-25-07, 10:59 AM
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Im guessing it is an efini ypipe and it is the gasket between the ypipe and crossover pipe. If not that then between the turbos and ypipe.
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Old 11-25-07, 11:34 AM
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My guess is that you have a pig caught in your engine bay.
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Old 11-25-07, 12:39 PM
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Without any belts on the engine, it still makes this noise.
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Old 11-25-07, 12:54 PM
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well you def have a vac leak somwhere. check your couplers above the y-pipe? though it does sound like a belt rubbing against something.

or maybe its a cat caught in your fans..
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Old 11-25-07, 02:21 PM
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Sounds like its not getting enough air going to the engine.. Did you upgrade your IC / Air intakes? it should be somewhere you should look. try to remove them and see if it do the same.
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Old 11-25-07, 03:54 PM
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well no doubt about it. youve got a nasty case of piggies in there!

my reccomendation: turn engine off immediately get a fork and threaten with bacon!
that should clear it up right away
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Old 11-25-07, 04:18 PM
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All IC pipeing has been removed Y pipe is off, all belts are disconnected.
You guys have some good ideas but none are the correct ones!

The 1st person to get this correct will get 6 months of free web hosting!

Good Luck,

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Old 11-25-07, 04:40 PM
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Which means it would have to be on the UIM or LIM, right?

I'm going to guess brake booster or pcv valve...
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Old 11-25-07, 05:46 PM
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thats your godzilla power-up death beat alarm. The spirits of the hidden rotor will send Godzilla to fix your car when the warning is sounded....usually takes a few weeks though....he swims from japan....then has to disguise him self as a truck to get inland.....no worries....just be sure you have some chicken er somethin cooking when he arrives. he's hungry.

.....or check your TB/UIM gaskets.
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