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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 02-02-2013, 05:31 AM
Toopricey01 Toopricey01 is offline
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flexx disk torqued right?

Vibration under acceleration.. i attached a photo below of the flex disk. can you please help? Do you think this would cause the vibration? Thanks
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Last edited by Toopricey01; 02-02-2013 at 06:02 AM.
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  #2  
Old 02-02-2013, 05:52 AM
mr_bean mr_bean is offline
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To me, it looks like the flange on the drive shaft is too far forward (too close to the flange on the trans). The guibo looks stressed.
If you unbolt the drive shaft from the trans, you should be able to compress the drive shaft so that its flange lines up correctly with the guibo.
Also, make sure centering ring inside the output flange on the trans is in good shape.
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Old 02-02-2013, 06:38 AM
Toopricey01 Toopricey01 is offline
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Exclamation Driveshaft collar nut

Also, does anyone know how tight the collar nut on the driveshaft should be? where the driveshaft splits? Thanks a lot
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Old 02-02-2013, 07:01 AM
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Siskin Siskin is offline
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As long as you're unbolting the driveshaft, check the center bearings (or any bearings for that matter). I just recently replaced my entire driveshaft due to a seized center bearing.

It was causing similar issues to those you describe. You SHOULD be able to just replace the bearing; mine was just especially f'd.
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Old 02-02-2013, 07:14 AM
Toopricey01 Toopricey01 is offline
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Believe it or not i just recently replaced the driveshaft with a rebuilt one and that came with a new CSB! but i had a guy install it for me and he installed the csb upside down, therefore i was getting a smacking and all kinds of vibrations, when i called him to ask him about it he said " oh it will go away, its just smacking on the heat shield that i bent" wtf really.. i did drive the car for a week or so like this, so maybe the bearing that was new is bad now as well ughhhhh
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Old 02-02-2013, 07:44 AM
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Siskin Siskin is offline
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If he installed your CSB upside down and bent your heat shield, I would definitely be suspicious of anything he touched while he was in there.
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Old 02-02-2013, 08:55 AM
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SJBimmer SJBimmer is offline
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Quote:
Originally Posted by mr_bean View Post
To me, it looks like the flange on the drive shaft is too far forward (too close to the flange on the trans). The guibo looks stressed.
If you unbolt the drive shaft from the trans, you should be able to compress the drive shaft so that its flange lines up correctly with the guibo.
Also, make sure centering ring inside the output flange on the trans is in good shape.
Spot on. That guibo is not going to last long running like that.
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