SMG grinding 3rd everytime

Mr.Jack · Thu, Jun-02-2011, 11:43:35 PM

Yessir. Thank NIS! Very helpful

(Harrison) · Sun, Jun-10-2012, 06:53:20 PM

Jack, did you resolve the problem??

I got exact same problem, what you do.

It happens almost every time (If got more than 1,2k rpms),
when im shift 2nd--> *grrrr* 3rd *grrr* <--4th.
Sound is so terrible, that my ears cant take it.
No mater is engine warm or cold and clutch has been changed lately.

Bmw INPA cannot find any error codes..

Any help? Spring, gear position sensor, actuator, fluids, reset, sofware?

RedM3/4 · Sun, Jun-10-2012, 10:49:04 PM

It may be the springs, but change them immediately, if you keep hearing this noise your synchro and/or gear will be gone, then it is tranny time.

ADS

(Harrison) · Mon, Jun-11-2012, 12:02:28 AM

Quote:

Originally Posted by RedM3/4

It may be the springs, but change them immediately, if you keep hearing this noise your synchro and/or gear will be gone, then it is tranny time.

ADS

Yeap, that I worry about all the time.

Does nobody know´s how actuator works? Because all other gears are doing perfect at low&high rpm´s. I that it cannot be actuator which is broken??

RedM3/4 · Mon, Jun-11-2012, 03:18:01 AM

Very unlikely to be the actuator. There is a rotational actuator, a proportional hydraulic cylinder - think left to right in the neutral gate, then forward and reverse cylinders. Since 3rd is in the middle of the rotational cylinders orientation, and uses the same forward cylinder motion as 1st and 5th, you'd have problems with one of these gears as well if you had a problem with the actuator getting into 3rd.

ADS

Quote:

Originally Posted by (Harrison)

Yeap, that I worry about all the time.

Does nobody know´s how actuator works? Because all other gears are doing perfect at low&high rpm´s. I that it cannot be actuator which is broken??

(Harrison) · Mon, Jun-11-2012, 07:57:33 AM

Quote:

Originally Posted by RedM3/4

Very unlikely to be the actuator. There is a rotational actuator, a proportional hydraulic cylinder - think left to right in the neutral gate, then forward and reverse cylinders. Since 3rd is in the middle of the rotational cylinders orientation, and uses the same forward cylinder motion as 1st and 5th, you'd have problems with one of these gears as well if you had a problem with the actuator getting into 3rd.

ADS

Ok, thanks. Do you have that M seq manual some where? I have try to find it, but all links are gone/old.

I so dont want to change hole tranny, but lets try springs first.

RedM3/4 · Mon, Jun-11-2012, 03:32:29 PM

http://www.leo.nutz.de/docs/bmw/smg_training_manual.pdf

Quote:

Originally Posted by (Harrison)

Ok, thanks. Do you have that M seq manual some where? I have try to find it, but all links are gone/old.

I so dont want to change hole tranny, but lets try springs first.

(Harrison) · Sun, Jun-17-2012, 06:58:44 PM

Let take this up. Anyone have solution?

My changes are: "new" tranny (1000dollars) or springs (150dollars, inc everything ball, springs, kit etc). Work costs are for tranny 650dollars and for springs 550dollars.

Lets say that, it will NOT work after new springs, then im f***** . Because I have to pay again another 650dollars. So I think its easier to order tranny..

Thats why I need 100% sure answer now (if somebody has it)

digger2 · Wed, Jun-20-2012, 05:10:47 PM

my suggestion would be a dealer fix or walk away. If the dealer does it, you will have a warranty on the bmw parts and the labor.

Abad46 · Wed, Jun-20-2012, 05:16:41 PM

Can you use INPA to fully adapt the transmission? I would start there to see if it completes.

Thu, Jun-02-2011, 11:43:35 PM	#11
Mr.Jack Registered User Join Date: Jul 2010 Posts: 698 Reputation: 0 Location: Murfreesboro	Re: SMG grinding 3rd everytime Yessir. Thank NIS! Very helpful

Sun, Jun-10-2012, 06:53:20 PM	#12
(Harrison) Registered User Join Date: Jun 2012 Posts: 50 Reputation: 0 Location: North Finland	Re: SMG grinding 3rd everytime Jack, did you resolve the problem?? I got exact same problem, what you do. It happens almost every time (If got more than 1,2k rpms), when im shift 2nd--> grrrr 3rd grrr <--4th. Sound is so terrible, that my ears cant take it. No mater is engine warm or cold and clutch has been changed lately. Bmw INPA cannot find any error codes.. Any help? Spring, gear position sensor, actuator, fluids, reset, sofware? __________________ Now: Bmw e92 M3 2008 alpinweiss 3 Ex Bmw´s : e46 M3 convert, e36 M3 coupe and lots of more other bayern products. Official Finnish Sauna club member Bimmer Tuning Club Finland WWW.BTCF.FI

Sun, Jun-10-2012, 10:49:04 PM	#13
RedM3/4 Registered User Join Date: Jul 2005 Posts: 5,270 Reputation: 0	Re: SMG grinding 3rd everytime It may be the springs, but change them immediately, if you keep hearing this noise your synchro and/or gear will be gone, then it is tranny time. ADS __________________ 98 M3/4, Supersprint catback, UUC red tranny mounts, Rogue SS w/UUC dual selector rod, wired V1. Sold to my son, still in the family! 06 SMG/ZCP - April 09, Dinan over Konis, RAC RG63, homelink with off-delay (working), multifunction steering wheel buttons, RacingBrake Front kit.

Sun, Jun-17-2012, 06:58:44 PM	#18
(Harrison) Registered User Join Date: Jun 2012 Posts: 50 Reputation: 0 Location: North Finland	Re: SMG grinding 3rd everytime Let take this up. Anyone have solution? My changes are: "new" tranny (1000dollars) or springs (150dollars, inc everything ball, springs, kit etc). Work costs are for tranny 650dollars and for springs 550dollars. Lets say that, it will NOT work after new springs, then im f***** . Because I have to pay again another 650dollars. So I think its easier to order tranny.. Thats why I need 100% sure answer now (if somebody has it) __________________ Now: Bmw e92 M3 2008 alpinweiss 3 Ex Bmw´s : e46 M3 convert, e36 M3 coupe and lots of more other bayern products. Official Finnish Sauna club member Bimmer Tuning Club Finland WWW.BTCF.FI Last edited by (Harrison); Sun, Jun-17-2012 at 07:12:17 PM.

Wed, Jun-20-2012, 05:10:47 PM	#19
digger2 Registered User Join Date: Apr 2012 Posts: 36 Reputation: 0 Location: Escondido	Re: SMG grinding 3rd everytime my suggestion would be a dealer fix or walk away. If the dealer does it, you will have a warranty on the bmw parts and the labor.

Wed, Jun-20-2012, 05:16:41 PM	#20
Abad46 Registered User Join Date: Jul 2008 Posts: 784 In the garage: '04 FORD F-150 '05 BMW M3 Reputation: 0 Location: St. Charles	Re: SMG grinding 3rd everytime Can you use INPA to fully adapt the transmission? I would start there to see if it completes.

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