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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 10-05-2012, 05:12 PM   #1
hueyhy
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Small vibration under HARD acceleration

Can feel a little vibration under really hard acceleration (floor gas at 1st/2nd gear. vibration happens around 3k rpm or more)
otherwise the car is firm.

Recently replaced guibo.
But not sure if the vibration is because of that, or because of chopped and unbalanced tire.
(autocrossed last weekend and I believe the tires had a hard day)

Is it possible that sliding in autocross could cause the tire unbalanced and have noticeable vibration?
no vibration if going smoothly.
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Old 10-05-2012, 05:25 PM   #2
///MPR77
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What could be possible, is the GUIBO was installed incorrectly.


Did you check the CSB?
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Last edited by ///MPR77; 10-05-2012 at 05:27 PM.
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Old 10-05-2012, 05:29 PM   #3
hueyhy
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what could be wrong there?
Quote:
Originally Posted by ///MPR77 View Post
What could be possible, is the GUIBO was installed incorrectly.
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Old 10-05-2012, 05:31 PM   #4
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vibration affected by engine RPM or speed?
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Old 10-05-2012, 05:33 PM   #5
hueyhy
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Originally Posted by MercForHire View Post
vibration affected by engine RPM or speed?
neither

i can accelarte smoothly, won't vibrate at any speed/rpm

maybe torque?
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Old 10-05-2012, 05:35 PM   #6
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engine vibration. mounts blown
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Old 10-05-2012, 05:36 PM   #7
hueyhy
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Originally Posted by MercForHire View Post
engine vibration. mounts blown
I'll check that. Thanks!
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Old 10-05-2012, 07:00 PM   #8
///MPR77
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Take a pic of the installed GUIBO.
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Old 10-05-2012, 08:47 PM   #9
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Your having the same problem i had when i replaced the guibo in my car.. You have to make shure the shaft is in just the same way you took if out.. luckly i marked it and was able to put it back in its proper alignment ..

Last edited by BMW_CRAZY; 10-05-2012 at 08:49 PM.
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Old 10-06-2012, 01:33 AM   #10
hueyhy
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Your having the same problem i had when i replaced the guibo in my car.. You have to make shure the shaft is in just the same way you took if out.. luckly i marked it and was able to put it back in its proper alignment ..
thanks!
so you mean you had the vibration, because you didn't put it back the correct way?
and then you lift the car and changed it to the correct alignment, and the vibration is gone?

if i didn't mark it, is there any way I could fix it?...
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Old 10-06-2012, 02:47 AM   #11
///MPR77
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Originally Posted by hueyhy View Post
thanks!
so you mean you had the vibration, because you didn't put it back the correct way?
and then you lift the car and changed it to the correct alignment, and the vibration is gone?

if i didn't mark it, is there any way I could fix it?...
Yes if it is mounted incorrectly, it will start vibrating within a couple thousand miles, at least in my case it did. It can be put on again correctly don't worry, you may have to drive it to a trustworthy shop, or better yet take it back to the shop that installed it, and explain the situation... Or did you DiY?
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Old 10-06-2012, 03:43 AM   #12
hueyhy
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Originally Posted by ///MPR77 View Post
Yes if it is mounted incorrectly, it will start vibrating within a couple thousand miles, at least in my case it did. It can be put on again correctly don't worry, you may have to drive it to a trustworthy shop, or better yet take it back to the shop that installed it, and explain the situation... Or did you DiY?

I did the job in a DIY garage with a lift. (actually I ddin't meant to replace the guibo, I was doing the short shifter job and then I found the guibo was broken, so I just ordered a new one and put it on)

can't remember if I marked it or not.

do I still need to remove the exhaust/heatshield to do the adjustment? that is painful...

it's just been a couple of hundred miles since I replaced the guibo.
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Old 10-06-2012, 04:04 AM   #13
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that's not engine mounts. first thing i thought was that it was guibo. reading more of the thread I see others also think so. seeing how you don't recall installing it with attention to mounting flanges to arrows it a pretty good chance that's it.
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Old 10-06-2012, 04:26 PM   #14
hueyhy
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just get under the car and checked the guibo.... found out it was installed in the wrong direction.

I didn't plan to replace it, so I didn't do enough homework on it. The old one broke when I was working on my short shifter so I ordered one and just put it on. was unable to search any info when I was at that garage...

have to do thing all over again. remove exhaust/heatshield, to get the guibo turned to the correct way.....

thanks for the information from all of you guys.
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Old 10-07-2012, 03:18 PM   #15
///MPR77
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Quote:
Originally Posted by hueyhy View Post
just get under the car and checked the guibo.... found out it was installed in the wrong direction.

I didn't plan to replace it, so I didn't do enough homework on it. The old one broke when I was working on my short shifter so I ordered one and just put it on. was unable to search any info when I was at that garage...

have to do thing all over again. remove exhaust/heatshield, to get the guibo turned to the correct way.....

thanks for the information from all of you guys.
No problem, Good Luck!
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