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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Fri, Jun-15-2012, 09:30:44 PM   #11
zcoombs4
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Default Re: SMG Compression Spring DIY

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Originally Posted by jothow View Post
is it possible you think to get to the compression spring from inside the car? I don't see why I couldn't cut a hole through body work to it at then plug it back up? does anyone have a schematic showing the exact location in relation to the car and smg gear stick etc?
I don't see why you couldn't, just not sure why you would.

Seems like it'd be just as much a PITA that way as well. But for reference, check the diagram here. I'm sure it's possible, as the blind plug is very near the top of the transmission anyway, though you'd run the risk of missing and hitting a hydraulic line maybe
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Old Fri, Feb-15-2013, 06:28:40 AM   #12
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Default Re: SMG Compression Spring DIY

Excellent write up. Bummer those pics were lost.

I'm thinking I will be taking this project on when I get a chance. Finding time between school and work is near impossible. Anyway just noticed the other day my car starting to exhibit symptoms of this issue. Occasionally it doesn't want to upshift. It always does, but there may be a 3-5 second delay of blinking gear number before the gear actually engages. Seems to occur mostly from 2 -> 3, but has happened also when going into 4th, 5th, and 6th one time. Likelihood of it happening seems to increase if I drive faster/shift at higher rpm. If this doesn't sound like a compression spring problem, I'd appreciate if someone would chime in.

Also the #6 spring and locking pin shown here are all that is needed?
http://www.realoem.com/bmw/showparts...56&hg=23&fg=15

Thanks in advance. Hope to report back with good news on this!
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Old Fri, Feb-15-2013, 06:45:10 AM   #13
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Default Re: SMG Compression Spring DIY

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Originally Posted by Karuza View Post
I pulled my spring out by Pulling trans mounts and fan shroud and just getting a screwdriver up there..

Good write up nonetheless
Has anyone else been able to confirm this, or is this guy really Macgyver?
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Old Fri, Feb-15-2013, 03:33:39 PM   #14
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Default Re: SMG Compression Spring DIY

If you didn't format the sd card, see if they will view/print from a printer or get an adapter and see if a smartphone will bring them up. Just because windows can't read it doesn't mean there is a problem. There may be, but often it just means it's windows... Pics would be an awesome add to this! Nice job!

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Old Wed, Mar-06-2013, 01:08:14 AM   #15
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Default Re: SMG Compression Spring DIY

Well replacing the compression spring did the trick. A few days ago it must have totally broken into 3 pieces and made the car unable to engage any gears. Got it towed home, and replaced the compression spring today. Man, what a #^%&^% that damn blind plug was. Removal and installation of the new blind plug was the most time consuming part of the whole process. Took about 8 hours start to finish.



All that for a lousy spring.
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Old Wed, Oct-09-2013, 12:34:24 AM   #16
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Default Re: SMG Compression Spring DIY

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Originally Posted by Karuza View Post
I pulled my spring out by Pulling trans mounts and fan shroud and just getting a screwdriver up there..

Good write up nonetheless
This is an old post, but if you can give more info on how it was done that would be great! I need to replace mine and this seems to be the best way, if not, I'll use zcoombs way.
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Old Wed, Oct-09-2013, 12:38:15 AM   #17
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Default

Just used a mini flathead and a lot of patience.. It's kind or hard to initially feel the plug but once you find it it's just a matter of positioning and rotating the flathead to pull it out
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Old Fri, Oct-11-2013, 12:54:42 AM   #18
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Default Re: SMG Compression Spring DIY

Are you guys replacing only part #6 (23311228397)? Looks like there a lot of other springs in that diagram...

Do those springs need to be replaced as well??
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Old Fri, Oct-11-2013, 03:21:39 AM   #19
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Default Re: SMG Compression Spring DIY

Pictures would have made this EPIC!
Good information though. I'm definitely going to use this when I change mine out as part of my predictive maintenance plan coming up.
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Old Thu, Dec-19-2013, 12:44:50 AM   #20
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Default Re: SMG Compression Spring DIY

So I finished this job this weekend. I nearly cried though when I was done.

Once I got the transmission cross brace mounted, I went ahead and turned the ignition to position 2 to see if the gears would engage (or flash). Gears engaged, but I could only get R, N, 1, and 2. I figured that I probably needed to get the engine cranked before I could engage the other gears. I re-installed drive shaft, heat shield, exhaust, air intake, strut brace, cabin filter, and all the under pan bits.

I start the car but the gears will only flash. I realize the hood is open thinking maybe that's it. Close the hood. Gears will still only flash. At this point I am thinking that despite my best efforts that I didn't install the locking pin in the correct orientation.

It's dinner time, so I grab a quick bite while I contemplate redoing this entire job to make another stab at the plug, spring and locking pin. I am pretty close to tears as I have track weekend in 2 days.

I started thinking that maybe the door was open when I tried this as I've seen the open door keep my from engaging gears in the past. I try again with closed door and the gears will engage, but only to 2nd. I lower the car and drive off the lift. I make a quick circuit and all the gears work great!

This job was probably the hardest and scariest as I had the engine and transmission tilted to the max sitting on transmission lift for 3 days while I waited for spring.

Getting the plug up was extremely difficult as I couldn't get any tools up into that space. I ended up using the head of a nail to work the plug loose. Getting the plug back in was no piece of cake either, especially when I could never be 100% sure that I put the locking pin in the correct orientation. Also, my spring was not broken so I am not sure that this will fix my 3-4 shift issues at the track.

I use an electric fan, so that was one part of the DIY that I didn't have to contend with.

I'll find out this weekend if the new spring fixes my track issues. Fingers crossed.
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Discussing SMG Compression Spring DIY in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)