High pitched whine - voltage regulator?
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From: Atlanta Metro
Current: C217 V12TT AMG Previously: C55 AMG, SL65 AMG
High pitched whine - voltage regulator?
When I first start up the car, I get a high pitched whine for a little bit. It eventually goes away. It also sometimes comes back when I come to a stoplight.
I wonder if this is the voltage regulator? And if so, is it on it's way out? I haven't noticed (at least I don't think) any power blips. The regulator is a pretty common problem on these cars, I'm just wondering if I should go ahead and buy a spare just in case and put it on the shelf.
I wonder if this is the voltage regulator? And if so, is it on it's way out? I haven't noticed (at least I don't think) any power blips. The regulator is a pretty common problem on these cars, I'm just wondering if I should go ahead and buy a spare just in case and put it on the shelf.
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2021 Yukon XL Denali, 2017 GLS450 4MATIC, 1993 Chevy Corvette
I have this exact same thing, usually upon startup and every so often at stop lights when the engine has not reached running temp yet. Any insight here is much appreciated.
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From: bay area, california
Aston Martin V8 Vantage
When I first start up the car, I get a high pitched whine for a little bit. It eventually goes away. It also sometimes comes back when I come to a stoplight.
I wonder if this is the voltage regulator? And if so, is it on it's way out? I haven't noticed (at least I don't think) any power blips. The regulator is a pretty common problem on these cars, I'm just wondering if I should go ahead and buy a spare just in case and put it on the shelf.
I wonder if this is the voltage regulator? And if so, is it on it's way out? I haven't noticed (at least I don't think) any power blips. The regulator is a pretty common problem on these cars, I'm just wondering if I should go ahead and buy a spare just in case and put it on the shelf.
Last edited by MIKESV8; Apr 6, 2011 at 11:29 PM.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2009
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From: Atlanta Metro
Current: C217 V12TT AMG Previously: C55 AMG, SL65 AMG
It's not the air pump, the air pump lasts longer during startup only and sounds like a loud broken bearing. This is a very high pitched whine, similar but louder than HID ballast whine.
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2016 Chevrolet SS, 2006 Cadillac STS-V
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2021 Yukon XL Denali, 2017 GLS450 4MATIC, 1993 Chevy Corvette
Again, spot on description Viper. The reason this thread struck a chord with me was because I was hearing this very noise on the way home from work yesterday.
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Thread Starter
MBWorld Fanatic!
Joined: Jun 2009
Posts: 3,040
Likes: 125
From: Atlanta Metro
Current: C217 V12TT AMG Previously: C55 AMG, SL65 AMG
I guess it just seems like it's been sounding louder and longer lately, so I was just curious to know if anyone who's had a VR replaced noticed any issues before it went out.
