Help identifying strange noise
Thread Starter
Instructor
Joined: Jun 2023
Posts: 101
Likes: 10
From: Poland
Help identifying strange noise
Hi , I understand it's quite difficult to help here, but maybe someone has something similar to this and can give me some direction to dig. This noise starts to appear a couple of minutes after starting the car on cold.
C7 GS 2017 with 8000miles on it
Someone on C7 facebook group told me it might be water pump , so I found this post https://www.corvetteforum.com/forums...ump-video.html and checked my pulley , but it seems to be ok
Someone on C7 facebook group told me it might be water pump , so I found this post https://www.corvetteforum.com/forums...ump-video.html and checked my pulley , but it seems to be ok
Race Director
Joined: Mar 2010
Posts: 15,993
Likes: 821
This is not the Corvette ownership experience we strive for. Our team would like the opportunity to learn more about the noise on your C7 and investigate ways we can potentially assist. When you get the chance, please send an email to socialmedia@gm.com. Be sure to include your Username and Forum name in the subject line, then provide additional details about your experience in the body of the email. We look forward to your contact.
Racer
Joined: Sep 2020
Posts: 423
Likes: 390
From: CO
This is not the Corvette ownership experience we strive for. Our team would like the opportunity to learn more about the noise on your C7 and investigate ways we can potentially assist. When you get the chance, please send an email to socialmedia@gm.com. Be sure to include your Username and Forum name in the subject line, then provide additional details about your experience in the body of the email. We look forward to your contact.
Racer
Joined: Sep 2020
Posts: 423
Likes: 390
From: CO
Hi , I understand it's quite difficult to help here, but maybe someone has something similar to this and can give me some direction to dig. This noise starts to appear a couple of minutes after starting the car on cold.
https://youtube.com/shorts/_dUynefbo...aGWbOcZlEiUbO_
C7 GS 2017 with 8000miles on it
Someone on C7 facebook group told me it might be water pump , so I found this post https://www.corvetteforum.com/forums...ump-video.html and checked my pulley , but it seems to be ok
https://youtube.com/shorts/_dUynefbo...aGWbOcZlEiUbO_
C7 GS 2017 with 8000miles on it
Someone on C7 facebook group told me it might be water pump , so I found this post https://www.corvetteforum.com/forums...ump-video.html and checked my pulley , but it seems to be ok
Is the noise louder in the engine compartment? If so, check the belt tensioner, the belt, and all pulleys. Are all of the pullies aligned, free running, and bolts torqued? Is the belt worn, stretched, frayed, or missing pieces?
Race Director
Joined: Mar 2001
Posts: 19,941
Likes: 6,741
From: Bonneville Salt Flats
It will be easier to deal with if you get a young guy who still has a chance of having good hearing to help ID where the noise may be originating. Without some sort of localization I don't see how you can make much progress beyond hit and miss. I've a mechanic's stethoscope one can touch things with to see where the noise is loudest and may originate from. Also, get the car in the air, on al lift you can run it on, if possible, which can help when you get under it. Being higher in the air will lessen the sound reverberation off the floor adding confusion, as if it were simply jacked-up. All the best. 
