Loud DCT noise when lifting at high RPM?

kerm1t · 08-20-2017, 11:49 AM

I get a loud thud or thunk noise when I let off gas during high RPM. There's a pretty brutal kick in the back and a very loud gear shifting sound. Sounds like the whole chassis is trying to hold itself together. Is this normal or am I driving this car wrong? This happens if I don't shift fast enough and let off gas early before the next gear.

The best way I can describe it -- it feels and sounds similar to manual cars when your dropping the clutch in high rpm.

GrussGott · 08-20-2017, 10:23 PM

Quote:

Originally Posted by kerm1t

The best way I can describe it -- it feels and sounds similar to manual cars when your dropping the clutch in high rpm.

This is why it's best to lease.

lukej · 08-20-2017, 10:39 PM

Sounds like it's confusing the DCT,, if you run the rpm up then let of to quick.. it was probably going to the next gear and no load,, that will make I do that ,,

If you going to run it hard ,,,,drive it like you stole it!

Or just baby it.. not in between!!

M4Now! · 08-20-2017, 11:13 PM

I've only heard that once: Downshifted and hit the gas hard at mid-RPM, then had to quickly get off the throttle. Think it was the "on / off" that confused the DCT.

Otherwise have not experienced this.

Cheers

kerm1t · 08-21-2017, 12:31 PM

Quote:

Originally Posted by M4Now!

I've only heard that once: Downshifted and hit the gas hard at mid-RPM, then had to quickly get off the throttle. Think it was the "on / off" that confused the DCT.

Otherwise have not experienced this.

Cheers

Quote:

Originally Posted by lukej

Sounds like it's confusing the DCT,, if you run the rpm up then let of to quick.. it was probably going to the next gear and no load,, that will make I do that ,,

If you going to run it hard ,,,,drive it like you stole it!

Or just baby it.. not in between!!

It happens if you let off throttle in high rpm and shift almost at the same time. I think I'm still too used to a manual...

BMWM5NYC · 08-21-2017, 06:14 PM

Quote:

Originally Posted by kerm1t

I get a loud thud or thunk noise when I let off gas during high RPM. There's a pretty brutal kick in the back and a very loud gear shifting sound. Sounds like the whole chassis is trying to hold itself together. Is this normal or am I driving this car wrong? This happens if I don't shift fast enough and let off gas early before the next gear.

The best way I can describe it -- it feels and sounds similar to manual cars when your dropping the clutch in high rpm.

Don't lift. Shift while on throttle. That is the way the DCT is set up to shift.

wakdady · 08-21-2017, 07:41 PM

08-20-2017, 11:49 AM	#1
kerm1t Captain 169 Rep 926 Posts Drives: 17 M3 ZCP Stage 2 Join Date: Jul 2013 Location: San Francisco iTrader: (0)	Loud DCT noise when lifting at high RPM? I get a loud thud or thunk noise when I let off gas during high RPM. There's a pretty brutal kick in the back and a very loud gear shifting sound. Sounds like the whole chassis is trying to hold itself together. Is this normal or am I driving this car wrong? This happens if I don't shift fast enough and let off gas early before the next gear. The best way I can describe it -- it feels and sounds similar to manual cars when your dropping the clutch in high rpm.
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08-20-2017, 10:39 PM	#3
lukej Lieutenant 387 Rep 544 Posts Drives: 2020 M4 Comp, Join Date: Apr 2016 Location: Midwest iTrader: (0)	Sounds like it's confusing the DCT,, if you run the rpm up then let of to quick.. it was probably going to the next gear and no load,, that will make I do that ,, If you going to run it hard ,,,,drive it like you stole it! Or just baby it.. not in between!! __________________ 1."Luck" is an excuse for people that have failed at their mission to do something! (Allan McNish) 2. I’m not an (EXPERT) I’m just here with an opinion. So don’t hate me. (lukej)
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08-20-2017, 11:13 PM	#4
M4Now! Captain 292 Rep 708 Posts Drives: MG / SO F83 Join Date: Sep 2011 Location: Texas iTrader: (0)	I've only heard that once: Downshifted and hit the gas hard at mid-RPM, then had to quickly get off the throttle. Think it was the "on / off" that confused the DCT. Otherwise have not experienced this. Cheers __________________ Bye bye E93 M3 - Hello F83 M4!
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08-21-2017, 07:41 PM	#7
wakdady Second Lieutenant 59 Rep 211 Posts Drives: i3 Join Date: Mar 2016 Location: 'merica iTrader: (0)	__________________ Cars are cool. We all know it. You wanna be a real badass? Ride a motorcycle, that's where the real heroes are.
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