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Old 05-23-2020, 07:55 PM   #1
Mitch_Ironhide
 
Drives: 2019 Camaro 2ss
Join Date: Mar 2020
Location: New York
Posts: 31
Whine noise when I revved car this morning

Anyone know why when I revved my car this morning in park, I heard a whine like from the front end? Sounded like a hellcat whine, but clearly this car isnít supercharged. Later on in day I revved and it didnít make that noise, just the loud V8 rumble
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Old 05-24-2020, 02:03 PM   #2
Mitch_Ironhide
 
Drives: 2019 Camaro 2ss
Join Date: Mar 2020
Location: New York
Posts: 31
Part 2

Definitely related to engine not fully being warm. I just tried it again this morning after letting engine warm a little bit but not fully.
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Old 05-26-2020, 03:04 PM   #3
HighIron
 
Drives: 2018 1SS M6 Nightfall Gray
Join Date: Jun 2018
Location: US
Posts: 120
I've seen where a failing bearing for the idler pulley/tensioner for serpentine belts can cause a whining noise. You say it sounds like a supercharger, but I've also heard the sound mimic that of a power steering pump with air in the hydraulic system ( on vehicles so equipped ). The pitch gets higher with RPMs.
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