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Can you hear it in all gears? Does it come and go depending on throttle position? If so might be hearing the transmission gear whine. That is completely normal.

 

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I have the same issue and its either my idler or tensioner pulley. Sounds like a supercharger whining lol

 

Yup, this started happening to me a few weeks ago. Hope it's nothing with the tranny rather it be the pulley. They've said it's cheaper and easier to fix

 

you supercharged?

 

It's weird that you notice it in 6th gear the most. When my idler pulley went bad on my '08 Si, the whining was heard in every gear. It got noticeable around 5K RPM, and got louder the closer to redline I got.

 

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Please let us know if Honda is able to (fix or even identify) the whining problem.

My 2010 Civic Coupe LX (approximately 87k miles - yes, I drive a lot) is also making a whining sound. The road noise in my Civic has always been loud, but this is more than just road noise...

I made a recording but it is really difficult to hear.

 

 

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i dont mean to bring this back from the dead but i just bought an fa5 and that thing whines when i rev it up too, i took the belt off to eliminate any pulley issues and it still made the whine noise, its coming from the passenger side of the engine, anybody found anything out yet? thinking maybe water pump? timing chain tensioner or something in that area

 

Which belt did you remove?

 

The serpentine belt, the only belt

 

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That would suck if tranny issues came up, mine is deffinately engine noise I'm thinking at 118000 it's probably time to replace my timing chain, tensioner and guides that's probably my noise

 

try changing the transmission fluid to something like Redline. That will be good for it even if it doesn't fix your problem.