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Thoughts on engine sound?

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Old Sep 22, 2024 | 12:05 PM
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Default Thoughts on engine sound?

Hey all, I’m new so I’m sorry if this is a bad post or if I shouldn’t have posted it! I’ve been in the market for a C5 for a while and finally have found one that seems to meet all the boxes I’m looking for. I just wanted to get an experts opinion on the whistle sound that is in the engine bay, is this an alternator, pulley, headers, or an intake? Or is this something else I haven’t thought about? Thank you so much for your time!
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Old Sep 22, 2024 | 03:14 PM
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Since it appears you do not have the tools or knowledge to sort out the problem, I suggest taking it to a recommended Corvette mechanic for a diagnosis (the local corvette club can give recommendations). JMHO.
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Old Sep 22, 2024 | 04:06 PM
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Sounds like the air injection to me. Runs a minute or two on startup, then shuts off. If it doesn't shut off after a couple of minutes, I could be wrong or it could be an air injection issue.
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Old Sep 22, 2024 | 09:34 PM
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Originally Posted by redzg
Sounds like the air injection to me. Runs a minute or two on startup, then shuts off. If it doesn't shut off after a couple of minutes, I could be wrong or it could be an air injection issue.
Sounds like that might be it.

OP, do you still have your EGR system in-tact?
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Old Sep 23, 2024 | 06:59 AM
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Moved to C5 Tech.
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Old Sep 23, 2024 | 09:21 AM
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Originally Posted by Vader_C5
Sounds like that might be it.

OP, do you still have your EGR system in-tact?
"A.I.R". no EGR on a C5.
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Old Sep 23, 2024 | 09:22 AM
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Originally Posted by lucky131969
"A.I.R". no EGR on a C5.
Yes, I always get the use of the acronyms confused 😆
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Old Sep 23, 2024 | 09:23 AM
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Originally Posted by redzg
Sounds like the air injection to me. Runs a minute or two on startup, then shuts off. If it doesn't shut off after a couple of minutes, I could be wrong or it could be an air injection issue.
Agree. Runs for 240 seconds after start up.
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