M6 SMG jerks from dead stop feels like a hard shift - BMW M5 Forum and M6 Forums
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post #1 of 6 Old 31st March 2019, 05:10 AM Thread Starter
Jdeez0112
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M6 SMG jerks from dead stop feels like a hard shift

Man I've been dealing with this forever, the car jerks from a dead stop and the clutch makes a clunking noise. This car has so many electronics controlling everything I tested a theory. Whenever at a dead stop simply tap the brake again right before hitting the gas and the jerking has hasn't came back. I've been dealing with this for years and just figured it out smh.
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post #2 of 6 Old 31st March 2019, 07:24 AM
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You have a bad throwout bearing. If I were to guess, your car is either 06 or 07, and does not have new, updated derlin core TB. Replace it next time you are doing your clutch.

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post #3 of 6 Old 31st March 2019, 07:30 AM Thread Starter
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Is that it? Thank u sir. It's an 07. Since I've been breaking right before gas I haven't had that issue. I replaced the clutch 2 yrs ago.
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post #4 of 6 Old 31st March 2019, 07:32 AM
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Your foot is meant to be on the brake even on flat surfaces
Otherwise it goes bang

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post #5 of 6 Old 31st March 2019, 08:50 AM
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Quote:
Originally Posted by Jdeez0112 View Post
Man I've been dealing with this forever, the car jerks from a dead stop and the clutch makes a clunking noise. This car has so many electronics controlling everything I tested a theory. Whenever at a dead stop simply tap the brake again right before hitting the gas and the jerking has hasn't came back. I've been dealing with this for years and just figured it out smh.
Not a bearing issue, just a known issue. There's a several pages long thread from years ago that described the issue. I've also written about it but can't find either thread right now.

Long story short, the right answer is keep your foot on the brake. The car shifts into N by itself if you don't keep your foot on the brake after about 30s or so. So when you take off it first slams into gear. Nothing to do with the clutch. Tapping the brakes re-engages the gear and resets the timer. This is easily verified through inpa.

FYI replacing the clutch solenoid orings will reduce the harshness of this 'clunk'.
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post #6 of 6 Old 5th April 2019, 03:35 AM
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Quote:
Originally Posted by Jdeez0112 View Post
Man I've been dealing with this forever, the car jerks from a dead stop and the clutch makes a clunking noise. This car has so many electronics controlling everything I tested a theory. Whenever at a dead stop simply tap the brake again right before hitting the gas and the jerking has hasn't came back. I've been dealing with this for years and just figured it out smh.
You're saying you sit at stoplights with your foot off of the brake? That's generally a bad idea for a variety of reasons.
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