Weird chirp noise Video*
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Joined: Nov 2012
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Weird chirp noise Video*
My corvette is an 06 with 42k miles and I just got her. She is making a weird chirp noise that is getting to me. SHe drives as strong as ever but the noise doesn't seem to go away. Anyone have any ideas? 
http://m.youtube.com/watch?feature=plcp&v=G8wm7Q2Z8Fk
http://m.youtube.com/watch?feature=plcp&v=G8wm7Q2Z8Fk
Track Junky
Joined: Jun 2007
Posts: 4,074
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From: Orlando Area
Tech Contributor
Possibly harmonic balancer. Pretty common here.
Can you pinpoint the chirping noise to the lower center of the engine? Can you see the pulley wobbling?
Can you pinpoint the chirping noise to the lower center of the engine? Can you see the pulley wobbling?
Last edited by taken19; Nov 22, 2012 at 04:35 AM.
Race Director
Joined: Jun 2005
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From: Phila Suburbs 2023 C8 & 2013 650ix
That is definitely a failed "crankshaft pulley" (harmonic balancer). The balancer has a center hub pressed to the front of crankshaft and then a flexible rubber coupling between it and the outer hub that drives the main serpentine belt. The rubber flexible coupling has a history of failing causing the outer hub to "wobble" and the wobble causes the belt to "chirp".
I had the exact same thing happen to my 05 after 19,000 miles. Mine was replaced under warranty but if I had to pay for it the price was around $1000 at a dealer.
I had the exact same thing happen to my 05 after 19,000 miles. Mine was replaced under warranty but if I had to pay for it the price was around $1000 at a dealer.
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Yea it does look like its from the bottom of the engine and I do see it wobbling a bit. Ima call Horsepower Sales in pompano first thing on Monday see what I should expect. I do have a MPP waranty that i really hope will cover or at least help the expense of the fix. It is my daily driver so in the meantime I'm driving it as babied as possible.. 
thanks for the quick response.
thanks for the quick response.
Burning Brakes
Joined: Oct 2003
Posts: 826
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From: Chicopee MA
Just had my second one installed under warranty.That makes three h/b on a vehicle with 24k on it. The last one doesn't wobble at all. The other ones had a slight wobble to start with. If it happens again I will go with ATI h/b and never have the problem again. I would have done it this time but the h/b was free along with the install. Keeping my fingers crossed.
Pro
Joined: Apr 2011
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My corvette is an 06 with 42k miles and I just got her. She is making a weird chirp noise that is getting to me. SHe drives as strong as ever but the noise doesn't seem to go away. Anyone have any ideas?
http://m.youtube.com/watch?feature=plcp&v=G8wm7Q2Z8Fk
http://m.youtube.com/watch?feature=plcp&v=G8wm7Q2Z8Fk
I had a similar noise a few weeks ago. Removed the long tip from a mechanics stethoscope and used the open ends to find the noise coming from the alternator pulley. It's weird because it hasn't made the noise again since.
here's a good vid
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