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Cabin Noise Coming from the HVAC vents

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Old 07-03-2017, 02:30 PM
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Lorenzo Serra
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Default Cabin Noise Coming from the HVAC vents

Hi everyone from the awesome CV community,

After many years of drooling on magazines and Youtube I've finally purchased my dream car: The 2012 Z06 Centennial Edition w/ CC brakes

The car is running strong with what I believe typical LS7 valve train noise. However, I've noticed some cabin noise coming from the central only HVAC that seems to be engine related and it's diving me nuts

The sound does increase as the engine revs higher but then reaches a plateau above 3k.

Any help would be highly appreciated.

Thanks and kindest regards,

-Lorenzo
Old 07-03-2017, 11:30 PM
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Dan_the_C5_Man
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Originally Posted by Lorenzo Serra
Hi everyone from the awesome CV community,

After many years of drooling on magazines and Youtube I've finally purchased my dream car: The 2012 Z06 Centennial Edition w/ CC brakes

The car is running strong with what I believe typical LS7 valve train noise. However, I've noticed some cabin noise coming from the central only HVAC that seems to be engine related and it's diving me nuts

The sound does increase as the engine revs higher but then reaches a plateau above 3k.

Any help would be highly appreciated.

Thanks and kindest regards,

-Lorenzo
Before your dream becomes a nightmare, check yourself (or pay someone) the valve guides (if the car has 10K or more miles).

Post a video of the sound, or try to describe it in detail.

Last edited by Dan_the_C5_Man; 07-03-2017 at 11:30 PM.
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Old 07-03-2017, 11:33 PM
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meanjoe
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Originally Posted by Dan_the_C5_Man
Before your dream becomes a nightmare, check yourself (or pay someone) the valve guides (if the car has 10K or more miles).

Post a video of the sound, or try to describe it in detail.
My guides were bad at 3500 miles.
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Old 07-04-2017, 01:59 AM
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ZIE06Bernie
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Originally Posted by Lorenzo Serra
Hi everyone from the awesome CV community,

After many years of drooling on magazines and Youtube I've finally purchased my dream car: The 2012 Z06 Centennial Edition w/ CC brakes

The car is running strong with what I believe typical LS7 valve train noise. However, I've noticed some cabin noise coming from the central only HVAC that seems to be engine related and it's diving me nuts

The sound does increase as the engine revs higher but then reaches a plateau above 3k.

Any help would be highly appreciated.

Thanks and kindest regards,

-Lorenzo
Not the chattering gear lever by chance runs with the beat of the V8 - common source of noise.

Try holding the lever tightly in gear and see if it changes before anything else
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Old 07-04-2017, 02:36 AM
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MTPZ06
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Not that it's a perfect scenario for troubleshooting, but try posting a video of the sound.
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Old 07-04-2017, 03:53 AM
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Lorenzo Serra
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I really appreciate all the replies as it's driving me nuts.

The engine only has approximately 1k miles as it was replaced by an extended warranty program. It's a 2013 engine: 10H161322611304; that was fully inspected before mounting.

I'll inspect the chattering gear lever today and let you guys know and I'll also post a video of the sound.

It seems that the sound only comes to life when the engine reaches its proper running temperature after about 8-10 minutes of running.

Thanks!

-L
Old 07-04-2017, 02:10 PM
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Ah, it could be a number of things with a motor just being replaced.
Old 07-27-2017, 01:26 PM
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Lorenzo Serra
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Hi guys,

I've finally recorded a video of the sound inside the cabin which I think nails it well.

I'd really appreciate you guys' input. You'll probably need to wear earbuds to hear it right.

Thanks!


Last edited by Lorenzo Serra; 07-27-2017 at 01:28 PM.
Old 07-29-2017, 10:46 AM
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Any ideas guys would highly be appreciated.

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