Deceleration noise/whine
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Member
Joined: Sep 2011
Posts: 80
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From: SF Bay Area
2012 C63
Deceleration noise/whine
I just recently noticed a subtle whine when I let off the gas at around 75mph in 7th. Immediately stops as soon as I get back on the throttle even a little bit. Haven't noticed it at any other speeds. Any ideas?
Thanks
Thanks
Member
Joined: Mar 2017
Posts: 149
Likes: 10
c63 amg PP (w204)
I have exactly the same issue. It seems to have appeared after straight piping the secondary cats.
I thought it could be LSD fluid on it's way out, had it changed but the soudnd remains.
It's especially evident in lower gears in high RPM ranges upon deceleration.
It's a low humming / groaning sound which stops as soon as I press the accelerator pedal.
I thought it could be LSD fluid on it's way out, had it changed but the soudnd remains.
It's especially evident in lower gears in high RPM ranges upon deceleration.
It's a low humming / groaning sound which stops as soon as I press the accelerator pedal.
Last edited by bullitt69; Aug 16, 2017 at 07:52 AM.
