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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 05-04-2013, 09:55 PM   #1
DarkSyde330ci
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new guibo and csb still a slight rumble strip noise

I replaced center support and guibo today and although the rumble strip sound is gone while at mild/normal throttle... it still chimes in at full throttle launches.

I set csb preload to the exact spot of the old csb I highly doubt It was 4-6mm though like I've been looking up. Tomorrow ill set it at 4-6mm like it says but do you guys think it'd really make that noise stop or is it subframe bushings or trailing arm bushings maybe?

This sucks
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Old 05-04-2013, 10:04 PM   #2
Snik
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have you changed the wheel bearings?
sometimes a bad front one can sound like the rear, and when the rears are bad, they just never shut up.
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Old 05-04-2013, 10:18 PM   #3
DarkSyde330ci
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I def have some bad wheel bearings but this def sounds like right under Trans tunnel like its the csb
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Old 05-04-2013, 10:26 PM   #4
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its probably the wheel bearing then....
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Old 05-04-2013, 10:40 PM   #5
DarkSyde330ci
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Wheel bearing causes driveshaft to mak the rumple strip sound? Those are a lot easier to replace if so lol
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Old 05-04-2013, 11:01 PM   #6
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how do u know its the drive shaft?
when BMW wheel bearing go bad they sometimes sound like a million other things.. but generally any rumble strip sound you hear it typically the bearings. a bad CSB usually results in increased drivetrain lash and only makes noise when drive hard.
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Old 05-05-2013, 07:38 PM   #7
DarkSyde330ci
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So.... new guibo, new center support bearing (old one was destroyed), u joint felt perfect, I marked everything perfectly and regreased the ball bearing section that attaches to the diff. I preloaded the csb like im supposed to yet I still get a slight rumble strip noise on Trans tunnel like its still a bad csb. The sound is definitely not as loud as before though but still there.
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Old 05-11-2013, 01:53 AM   #8
Wielandgeorg
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I'm having a similar issue after changing all the guibo and Csb and diff mounts my driveshaft still shudders around 20mph and shakes center console

04 325ci

I tried and tried but haven't found a solution unjoints feel good.

Let me know what happened with your problem maybe we can help each other.

Thanks
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Old 05-11-2013, 09:06 AM   #9
DarkSyde330ci
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What I'm trying next is throwing a ratchet strap around Trans and Trans crossmemer and tightening it up and see if it stops... I'm thinking its the Trans mounts... ill report after a few

Or worse case scenario its damaged rear subframe mounts
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Old 09-24-2013, 10:50 AM   #10
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Has anyone narrowed this down i have had the same issue I have replaced motor mounts, guibo, csb, i was thinking it was rear diff suport bushing it only happens at hard acceleration around 20-25 mph. Thanks in advance
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Old 09-24-2013, 12:25 PM   #11
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Re: new guibo and csb still a slight rumble strip noise

Having the same problem around 10-20 mph with very mild acceleration center console feels like someone is under there hitting it with a hammer has me scared im going to lose my driveshaft at every light. Bought a guibo and CSB but yet to install exhaust bolts are welded so can't get past step one

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Old 09-24-2013, 03:12 PM   #12
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Add another 04 330ci to the mix. Been told on here by others it is the CSB and guibo but have not had the chance to even get under the car and investigate. Originally I though it was suspension related (which I needed a new one anyways) so I replaced all four corners shocks and struts and all parts associated with them, like the mounting plates, rubbers, bolts, washers. Still does it so I'm saying not any of those parts.

Noise happens just like everyone else says at 10-25 mph but more when the rpms are up to 2500-3000 in first and second gear. If you were to get the rumbling up really good in 1st and shift to second (automatic) around 3000 it doesn't happen in 2nd then.

Would like to know exactly what the problem is before I shovel a tone of cash at it. I have also been thinking trailing arm bushings or sub frame bushings. I replaced one rear and two from sub frame bushings awhile back. From what I can tell the rear one still looks good.
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Old 09-24-2013, 05:18 PM   #13
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The driveshaft CV joint could be bad
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Old 09-25-2013, 06:23 PM   #14
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The driveshaft CV joint could be bad
+1

I had my CSB fail, first with the rumble strip description mentioned earlier, progressing to a flat-out banging under acceleration. A new guibo and CSB just reset the banging to the rumble strip sound. One new driveshaft later, all the noise and vibration was gone. Between this one and the failed driveshaft on my E30, it seems that more often than not the CSB doesn't fail on its own, it's just a symptom of a failing driveshaft u-joint/cv joint.
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Old 09-25-2013, 08:53 PM   #15
davidedwardse46
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Yeah that's what I am beginning to believe I know you joints are good I thought the drive shaft was fine when I took apart for csb, after I changed guibo and csb a month ago it stopped for a few days then started again but I am changing rear diff bushings and then I guess a new drive shaft poor me
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