6MT weird shudder when accelerating from stop

dreamspeed · 11-18-2014, 10:30 PM

I was wondering if anyone else has had this same problem. When I'm accelerating from a stop I get a weird shudder from what I assume to be the transmission (although could be from diff). Basically when I release the clutch and press the gas, it's very hard/impossible sometimes to get a smooth transition

It's kind of like when your were a noob driving a stick and you couldn't slip the clutch correctly and the car would kind of die for a split second... Except I've been driving a stick for like 15 years and even when I'm really focusing on it I can't get it to transition correctly

It seems to be an intermittent issue that is usually worse when I'm accelerating from a stop on an incline.

m3ray · 11-18-2014, 10:33 PM

Incline issue leads me to belive it could be clutch related. How many miles on it?

dreamspeed · 11-18-2014, 10:56 PM

It's not all the time and I don't feel the clutch slipping, only 45k miles on the car and they aren't hard miles.

When I release the clutch and press the gas there is like a slight pause, shudder, then the car catches and moves

PerfM5 · 11-19-2014, 02:14 AM

I'm going through a similar situation. My mechanic took the driveshart off and noticed the rear portion is binding. I've yet to find time to go back and get it fixed. I'll keep you posted

dreamspeed · 11-19-2014, 11:53 AM

Quote:

Originally Posted by PERFM3

I'm going through a similar situation. My mechanic took the driveshart off and noticed the rear portion is binding. I've yet to find time to go back and get it fixed. I'll keep you posted

Hmm, that's concerning. What are the symptoms that you are experiencing?

Does it get better or worse with the car being cold vs. hot?

Have you noticed this issue getting worse or stayed the same?

Are there any particular noises (metal scraping, grinding etc)?

Is it like really noticeable and you feel like you need to stop driving the car or does it just seem more like an annoying thing that you could deal with?

Guess I will look up driveshaft issues for the car. Thanks

mtfinger · 11-21-2014, 05:04 PM

Very timely post. I was just booking an appointment with BMW to have them look at this issue on my car (2013 6MT w/17k on it).

Just to make sure we are talking about this same thing, here is what I'm experiencing.

On an incline (even small incline) or if I have multiple people in the car, if you take off even gently, at the very end of releasing the clutch, you can feel it shutter a bit. It's not a horrible shutter, but I have had more than 1 passenger give me a hard time for "almost stalling the car". Even though that is not whats happening. Revs never go below 1000-1100.

In my car, it doesn't do it until I have driven the car a bit. I don't need to drive it hard to really heat it up. Just my normal drive to work, by the end of a 25 mins commute, it will do it on and off.

I have been spending some time trying different things to be able to reproduce it on demand, because I can already hear the BMW SA "It's normal for these M3 cars".

I have owned the car since new, and it only started this within the past 1000 miles or so.

dreamspeed · 11-21-2014, 09:19 PM

Quote:

Originally Posted by NoM3Yet

Very timely post. I was just booking an appointment with BMW to have them look at this issue on my car (2013 6MT w/17k on it).

Just to make sure we are talking about this same thing, here is what I'm experiencing.

On an incline (even small incline) or if I have multiple people in the car, if you take off even gently, at the very end of releasing the clutch, you can feel it shutter a bit. It's not a horrible shutter, but I have had more than 1 passenger give me a hard time for "almost stalling the car". Even though that is not whats happening. Revs never go below 1000-1100.

In my car, it doesn't do it until I have driven the car a bit. I don't need to drive it hard to really heat it up. Just my normal drive to work, by the end of a 25 mins commute, it will do it on and off.

I have been spending some time trying different things to be able to reproduce it on demand, because I can already hear the BMW SA "It's normal for these M3 cars".

I have owned the car since new, and it only started this within the past 1000 miles or so.

Yes it sounds the same. It doesn't have to be an incline but an incline does seem to exacerbate the problem. Mine also seems to only do this once the car has spent some time on the road and warmed up.

thekurgan · 11-22-2014, 10:56 AM

Maybe have the guibo or center bearing inspected.

STooK · 11-23-2014, 10:04 PM

Interesting...I have been noticing this lately as well. I just thought it was because I wasn't giving it enough gas while releasing the clutch so the revs dip <600 causing the slight shudder. I'll keep my eyes on this thread though.

sankarsh12 · 11-24-2014, 08:03 AM

I had the same issue, got it fixed ...the issue is the broken pressure plates.. so i am guessing you need to replace the clutch assembly.

dreamspeed · 11-25-2014, 01:41 PM

Quote:

Originally Posted by STooK

Interesting...I have been noticing this lately as well. I just thought it was because I wasn't giving it enough gas while releasing the clutch so the revs dip <600 causing the slight shudder. I'll keep my eyes on this thread though.

I think what you are describing might be normal, with the issue i'm having the rpm doesn't drop, it actually feels like something is slipping that shouldn't be.

It doesn't seem to be the clutch it seems to be coming from the rear end

mtfinger · 11-25-2014, 04:09 PM

Quote:

Originally Posted by sankarsh12

I had the same issue, got it fixed ...the issue is the broken pressure plates.. so i am guessing you need to replace the clutch assembly.

Were you having the "slight" shutter that we are describing? Did it only do it after the car warmed up a bit?

I'm asking as a broken pressure plate is a big thing, and I would expect more than a "slight" shutter with a broken plate.

sterile stork · 11-25-2014, 05:29 PM

This is very telling of a prop-shaft center-bearing failure--at least if my days from the older BMWs are any indication. Hopefully it is fixed quickly

dreamspeed · 11-26-2014, 12:47 PM

Not sure if everyone here is having the same problems but here is a test from rogue engineering that you can try to see if it's the giubo that's starting to fail, besides looking at the actual thing of course.

http://www.rogueengineering.com/bmw/GUIBO.html

Btw, I did a quick google search and didn't find any but is there an upgraded giubo and center bearing? Or is OEM the only option?

sankarsh12 · 11-26-2014, 01:49 PM

yes, broken pressure plate seems a big thing and u would expect a lot of noise.. but the service guys said... the car can be driven even without repairing it..
all i heard was a small shutter when i changed gear from 1st gear to 2nd gear.

the best thing to do is .. just go to bmw service.. they will fix it ..

Law · 11-28-2014, 11:57 AM

I get the shuddering from time to time but it is very inconsistent.

Did a search and it seems to be common amongst BMWs (though i don't remember experiencing this on my E46).

http://www.e90post.com/forums/showthread.php?t=463335
http://www.1addicts.com/forums/showthread.php?t=739881
http://www.bimmerfest.com/forums/sho...d.php?t=629950

The normality of the phenomenon is debatable but the general consensus is that uneven wear from excessive stop & go causes hotspots and deposits to form on an otherwise smooth flywheel and/or evenly worn clutch. Hence the shuddering sensation.
It does seem like based on those discussions, as long as the clutch is not slipping at full engagement, a clutch/flywheel replacement is not necessary although the hotspots/deposits are there to stay until a new clutch/flywheel assembly is installed.

Hope this helps and also open to more input from those who have experience with this.

dreamspeed · 11-28-2014, 01:53 PM

Quote:

Originally Posted by Law

I get the shuddering from time to time but it is very inconsistent.

Did a search and it seems to be common amongst BMWs (though i don't remember experiencing this on my E46).

http://www.e90post.com/forums/showthread.php?t=463335
http://www.1addicts.com/forums/showthread.php?t=739881
http://www.bimmerfest.com/forums/sho...d.php?t=629950

The normality of the phenomenon is debatable but the general consensus is that uneven wear from excessive stop & go causes hotspots and deposits to form on an otherwise smooth flywheel and/or evenly worn clutch. Hence the shuddering sensation.
It does seem like based on those discussions, as long as the clutch is not slipping at full engagement, a clutch/flywheel replacement is not necessary although the hotspots/deposits are there to stay until a new clutch/flywheel assembly is installed.

Hope this helps and also open to more input from those who have experience with this.

Thanks for the links, so far the flywheel deposits explanation seems to fit my situation the most. I DD the car through horrendous LA traffic so it makes sense.

It's pretty sporadic/minor at this point but I will continue to monitor.

jvictormp · 11-18-2019, 07:41 AM

Sorry about the date, but do you guys experience vibration when decelerating at 4th or 6th gear, about 3000, 4000 RPM?

11-18-2014, 10:30 PM	#1
dreamspeed Lieutenant Colonel 262 Rep 1,616 Posts Drives: 6MT Join Date: Jul 2012 Location: Los Angeles iTrader: (0)	6MT weird shudder when accelerating from stop I was wondering if anyone else has had this same problem. When I'm accelerating from a stop I get a weird shudder from what I assume to be the transmission (although could be from diff). Basically when I release the clutch and press the gas, it's very hard/impossible sometimes to get a smooth transition It's kind of like when your were a noob driving a stick and you couldn't slip the clutch correctly and the car would kind of die for a split second... Except I've been driving a stick for like 15 years and even when I'm really focusing on it I can't get it to transition correctly It seems to be an intermittent issue that is usually worse when I'm accelerating from a stop on an incline. __________________
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11-18-2014, 10:33 PM	#2
m3ray Banned 101 Rep 701 Posts Drives: '09 e92 M3 Join Date: Jun 2014 Location: New York City iTrader: (0)	Incline issue leads me to belive it could be clutch related. How many miles on it?
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11-18-2014, 10:56 PM	#3
dreamspeed Lieutenant Colonel 262 Rep 1,616 Posts Drives: 6MT Join Date: Jul 2012 Location: Los Angeles iTrader: (0)	It's not all the time and I don't feel the clutch slipping, only 45k miles on the car and they aren't hard miles. When I release the clutch and press the gas there is like a slight pause, shudder, then the car catches and moves __________________
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11-19-2014, 02:14 AM	#4
PerfM5 Lieutenant 94 Rep 530 Posts Drives: F10 M5 Space, E92 M3 Techno Join Date: Oct 2013 Location: SoCal iTrader: (7)	I'm going through a similar situation. My mechanic took the driveshart off and noticed the rear portion is binding. I've yet to find time to go back and get it fixed. I'll keep you posted __________________
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11-21-2014, 05:04 PM	#6
mtfinger Private 11 Rep 76 Posts Drives: E92 M3 Join Date: Nov 2012 Location: Woodinville, WA iTrader: (0)	Very timely post. I was just booking an appointment with BMW to have them look at this issue on my car (2013 6MT w/17k on it). Just to make sure we are talking about this same thing, here is what I'm experiencing. On an incline (even small incline) or if I have multiple people in the car, if you take off even gently, at the very end of releasing the clutch, you can feel it shutter a bit. It's not a horrible shutter, but I have had more than 1 passenger give me a hard time for "almost stalling the car". Even though that is not whats happening. Revs never go below 1000-1100. In my car, it doesn't do it until I have driven the car a bit. I don't need to drive it hard to really heat it up. Just my normal drive to work, by the end of a 25 mins commute, it will do it on and off. I have been spending some time trying different things to be able to reproduce it on demand, because I can already hear the BMW SA "It's normal for these M3 cars". I have owned the car since new, and it only started this within the past 1000 miles or so.
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11-22-2014, 10:56 AM	#8
thekurgan Bad Lieutenant 232 Rep 3,517 Posts Drives: E90M3 Join Date: Aug 2007 Location: Sacramento iTrader: (0) Garage List 2008 BMW M3 [0.00]	Maybe have the guibo or center bearing inspected. __________________ 02 E39M5 \| TiAg/Schwartz \| Tubi Rumore \| Ultimate Ti Pedals \| E60 SSK \| Jim Blanton 3.45 40/100% \| Coby Alcantara \| StrongStrut STB
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11-23-2014, 10:04 PM	#9
STooK Lieutenant Colonel 726 Rep 1,974 Posts Drives: 2013 E92 M3 ZCP Join Date: Sep 2011 Location: NY iTrader: (6)	Interesting...I have been noticing this lately as well. I just thought it was because I wasn't giving it enough gas while releasing the clutch so the revs dip <600 causing the slight shudder. I'll keep my eyes on this thread though. __________________ 2013 BMW E92 ///M3 AW/BLK ZCP CF Roof 6 Speed - Perfection 2011 BMW E90 328i xDrive Space Grey/Black - Daily 2011 BMW E93 ///M3 MW/FR/BLK 6 Speed - Gone but not forgotten
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11-24-2014, 08:03 AM	#10
sankarsh12 Private 3 Rep 57 Posts Drives: M4 - 6MT - Silverstone Join Date: Sep 2014 Location: DETROIT iTrader: (1)	I had the same issue, got it fixed ...the issue is the broken pressure plates.. so i am guessing you need to replace the clutch assembly.
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11-25-2014, 05:29 PM	#13
sterile stork coupe la goon 373 Rep 1,640 Posts Drives: green, black, white Join Date: Jan 2006 Location: pdx iTrader: (26) Garage List 2011 BMW 1M Coupe [10.00] 2013 BMW M3 Coupe [10.00] 2010 BMW 535i xDriv ... [0.00] 2008 BMW M3 Coupe ( ... [0.00]	This is very telling of a prop-shaft center-bearing failure--at least if my days from the older BMWs are any indication. Hopefully it is fixed quickly
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11-26-2014, 12:47 PM	#14
dreamspeed Lieutenant Colonel 262 Rep 1,616 Posts Drives: 6MT Join Date: Jul 2012 Location: Los Angeles iTrader: (0)	Not sure if everyone here is having the same problems but here is a test from rogue engineering that you can try to see if it's the giubo that's starting to fail, besides looking at the actual thing of course. http://www.rogueengineering.com/bmw/GUIBO.html Btw, I did a quick google search and didn't find any but is there an upgraded giubo and center bearing? Or is OEM the only option? __________________ Last edited by dreamspeed; 11-26-2014 at 01:23 PM..
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11-26-2014, 01:49 PM	#15
sankarsh12 Private 3 Rep 57 Posts Drives: M4 - 6MT - Silverstone Join Date: Sep 2014 Location: DETROIT iTrader: (1)	yes, broken pressure plate seems a big thing and u would expect a lot of noise.. but the service guys said... the car can be driven even without repairing it.. all i heard was a small shutter when i changed gear from 1st gear to 2nd gear. the best thing to do is .. just go to bmw service.. they will fix it ..
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11-28-2014, 11:57 AM	#16
Law Global Moderator 6381 Rep 2,309 Posts Drives: E90 M3 6MT Join Date: Jan 2009 Location: USA iTrader: (1) Garage List 2011.5 BMW M3 [10.00] 2004 BMW M3 [10.00]	I get the shuddering from time to time but it is very inconsistent. Did a search and it seems to be common amongst BMWs (though i don't remember experiencing this on my E46). http://www.e90post.com/forums/showthread.php?t=463335 http://www.1addicts.com/forums/showthread.php?t=739881 http://www.bimmerfest.com/forums/sho...d.php?t=629950 The normality of the phenomenon is debatable but the general consensus is that uneven wear from excessive stop & go causes hotspots and deposits to form on an otherwise smooth flywheel and/or evenly worn clutch. Hence the shuddering sensation. It does seem like based on those discussions, as long as the clutch is not slipping at full engagement, a clutch/flywheel replacement is not necessary although the hotspots/deposits are there to stay until a new clutch/flywheel assembly is installed. Hope this helps and also open to more input from those who have experience with this. __________________ 2011.5 E90 ///M3 \| 6-Speed Manual \| Slicktop \| Jerez Black \| Fox Red E9x M3 Press/Media Archives Thread \| S65-based Racing Engines Thread Last edited by Law; 11-28-2014 at 12:06 PM..
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11-18-2019, 07:41 AM	#18
jvictormp Captain 881 Rep 787 Posts Drives: 2008 M3 E92 6MT Join Date: Dec 2018 Location: Brazil iTrader: (0)	Sorry about the date, but do you guys experience vibration when decelerating at 4th or 6th gear, about 3000, 4000 RPM?
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