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Old 06-04-2012, 04:29 PM   #1
///M Powerd
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SMG Shudder in 1st Gear

Hi all,

I have done quite a bit of searching on this but not found a definite answer. I own a 2003.5 M3 SMG and when accelerating from a dead stop i occasionally get a shudder and a quiet thunk seeming to come from the drivers side wheel well around 800-1000 rpm. Using sport mode seems to make this a bit better (probably because the rpms raise quicker).

I wondered if any other local M3 SMG owners can comment on this as solutions on the forums seem to range from SMG resets, new clutches/flywheels to its normal, deal with it.

Thanks,
Steve
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Old 06-04-2012, 05:46 PM   #2
taylor192
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I'm not sure what the "thunk" is, yet I get a ~500 rpm drop from idle when accelerating in 1st gear. Its not consistent, and there's a million posts on M3Forums with various suggestions yet no definitive answer. Do your RPMs suddenly drop?
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Old 06-04-2012, 09:04 PM   #3
alvinchow
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I don't think is smg related, more the suspension play noise?
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Old 06-04-2012, 09:46 PM   #4
///M Powerd
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Thanks for the replies guys. I havent noticed any RPM drops. Is the only way to check the suspension to put it up on a lift? The PO had a set of Bilstein Coilovers installed before I bought it. I dont know if that would make a difference.
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Old 06-04-2012, 11:55 PM   #5
alvinchow
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lift the wheels and shake 3 and 9 position for steering, 12 and 6 for the bearings

see turnin wheels in the air makes that noise
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Old 06-05-2012, 12:14 AM   #6
///M Powerd
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thanks i poked around under there with a flash light but couldnt see anything obvious. i guess the next step is to lift er up and try that out. ill let u know what i find this weekend since i dont have at jack at my place here ill head out to my dads.

on a side note i got my first speeding ticket on my way back from the ferries testing it out in west van...ghost car w/lazer detector
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Old 06-05-2012, 03:07 AM   #7
keinz
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what do you drive in mostly S1-S6?

I have that shudder once in a while, drive the car rough for a bit in S5/S6 and it should go away

if not, can always try a SMG reset (via holding down both paddle shifts at ~40mph+) so the computer can re-calibrate to the amount of life your clutch has

Last edited by keinz; 06-05-2012 at 03:08 AM.
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Old 06-05-2012, 10:14 AM   #8
///M Powerd
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I am mostly in S3-S4. I'll give the higher settings a try and try out the SMG reset too. Thanks all for your suggestions.
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Old 06-11-2012, 09:29 AM   #9
Hockeyman17
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I get the same shudder in first gear occasionally. Ive had it since I bought the car a few years ago. No idea what it is.
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Old 06-11-2012, 10:46 AM   #10
///M Powerd
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I tried the SMG reset and it seems to have cured the shudder. Still getting the noise from my front driver suspension starting from a standstill so I'm going to take it and get looked at. Doesnt seem bad but better safe than sorry I guess.
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Old 06-19-2012, 10:46 AM   #11
Hockeyman17
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Update:

I did the SMG reset by holding both paddles going over 40MPH and it seems to have completely cured the shudder. That was easy
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Old 06-19-2012, 10:47 AM   #12
///M Powerd
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Old 06-19-2012, 03:51 PM   #13
///M Powerd
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Ok quick update. Took it into Nixon and they say the popping noise is the aftermarket brake pad moving around a bit in the caliper as its not quite the right size. Anyone ever heard of this?
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Old 06-19-2012, 04:27 PM   #14
taylor192
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Quote:
Originally Posted by ///M Powerd View Post
Ok quick update. Took it into Nixon and they say the popping noise is the aftermarket brake pad moving around a bit in the caliper as its not quite the right size. Anyone ever heard of this?
Do you know the brand of pads? I just did my front pads and they were a very tight fit, also dirt cheap @ $40:

http://store.bimmerworld.com/perform...ads-p1074.aspx

Oh, sorry for not getting back to you this weekend. Started drinking then forgot
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Old 06-19-2012, 04:42 PM   #15
///M Powerd
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No idea on pads brand. The PO had them put in. If I were to order these, can i just change on set or will I have to do all four sides? Hahaha no worries, as we all know alcohol is the cause of and solution to all life's problems
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Old 06-19-2012, 09:57 PM   #16
taylor192
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Quote:
Originally Posted by ///M Powerd View Post
No idea on pads brand. The PO had them put in. If I were to order these, can i just change on set or will I have to do all four sides? Hahaha no worries, as we all know alcohol is the cause of and solution to all life's problems
Not sure if I understand? Do you mean: Do you have to change all 4 front pads? Yes, you should for brake balance - and you should measure your front rotors to see if they need to be changed at the same time since its only 2 more bolts to change them.
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Old 06-19-2012, 10:10 PM   #17
///M Powerd
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Yup thats what I meant. Chris checked the pads and rotors, almost brand new. I'll see how much this bothers me and look into those pads. He recommended OEM pads as they give the best braking power Said the play in the pad wasn't causing any issues so no need to change em unless the sound is bugging me.
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Old 09-30-2012, 03:27 PM   #18
chetured
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See my other post just do a full smg reset using carsoft or gt1 works wonders !!!
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Old 12-23-2012, 07:15 AM   #19
dal1557
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bad gear changes

hi
when am slowing down to junctions my m3 comes down the gears am sometimes getting a clunking noise and the car kangaroos a bit

can anyone advise ????
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Old 12-25-2013, 08:22 PM   #20
maw1124
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Quote:
Originally Posted by Hockeyman17 View Post
Update:

I did the SMG reset by holding both paddles going over 40MPH and it seems to have completely cured the shudder. That was easy
I have had the same issue, but I've noticed it is only when the car is cold. I will try the SMG reset though and see if that cures it, just to build a library on the issue for the forum. No O2 sensor codes for me, although I have had this on other cars before the cars warm up -- a form of uneven acceleration. '05 M3 Convert, SMG, 79k odo.

Merry Christmas, Gents.

maw

Last edited by maw1124; 12-25-2013 at 08:23 PM. Reason: Typo
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