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-   -   Changed guibo& Centre bearing, now new vibration (http://forum.e46fanatics.com/showthread.php?t=947928)

realthing75 10-01-2012 05:30 AM

Changed guibo& Centre bearing, now new vibration
i have recently bought a 2004 320i m sport sedan. automatic. it had a vibration when taking off from stand still.. changed guibo and centre bearing. fixed the taking off vibration. but now i have a new vibration. the vibration only happens under load/acceleration and only on 3rd and 4th gear, never on take off, which is confusing the hell out of me. this vibration only started after changing guibo and bearing. the harder i accelerate the more it vibrates. one thing i noticed id the rubber surround on the new centre bearing was pretty flexible, much more flexible compared to the original, so i decided to use the original rubber surround with the new bearing. and also when i took off the front part of the driveshaft the rear part of it just dropped. it didnt hit anything though. its pretty light and i doubt that could of put the driveshaft off balance. im hoping this has happened to someone else and found a remedy. one more thing i noticed is that the rear tyres are different in width, one is 235 wide and the other 225 wide.. please help... dont want to be changing stuff unneccesarily. other than the vibration the car drives fantastic. thanks in advance

dmax 10-01-2012 06:11 AM

First, if you did the guibo yourself, can you post pictures of it installed...that is, if you're not sure you mounted it correctly. If you're one bolt off on it, you're off by a mile.

Different width tires would absolutely make a difference also...whether this is the difference you're noticing, it's hard to say.

The csb needs to be pre-loaded...pushed up to the front of the car.

The driveshaft, I hope, was marked before it was separated and returned to its original position.

Guibo/csb, as simple as they are, there are a lot of little details to cover...

Nothing personal...don't know if you did this yourself or not (sounds like you did) and don't know what you know...but I wanted to mention some of this in case you didn't know.

I can't explain too well about guibo position, but I can see easily if it's right from a photo. So many of the instructions I'd read are a little confusing about placement...at least if you don't know what you're doing! LOL This is why I studied the instructions myself before doing the job...and decided I better not!

HTH a little.

...and a bump!

realthing75 10-01-2012 12:46 PM

hi, thanks for you reply. i used this link http://www.bokchoys.com/differential/diy_guibo.htm as a guide. i installed the guibo exactly the same as the photo shown (figure i) about the arrows facing the right direction. i actually did it 3 times to get it spot on. also i did take off the drive shaft and installed the bearing out of the car. the vibration feels rubbery. could be because its an aftermarket guibo? i dont know. about the tyres being different. if that was a problem it should of happened before as well, but it didnt. this is got me stunned

realthing75 10-01-2012 12:52 PM

forgot to mention, yes i marked the driveshaft to make sure it went in exactly the same position.

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