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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 12-07-2010, 10:53 AM   #1
RobNH
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2004 330xi Shaking Violently

I have a 2004 330xi with 66,000 miles on it - 6-speed manual. Lately, I've noticed that after the car heats up, it starts to shake violently when you accelerate. You can definitely feel it through the steering wheel.

Take your foot off the gas, or give it just a light amount of gas - it's fine. It's even more noticeable when going up a hill.

Does anyone have any ideas what this might be?
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Old 12-07-2010, 10:58 AM   #2
Bimmer Dude Xi
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Have gotten the front end checked out?
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Old 12-07-2010, 11:02 AM   #3
RobNH
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Not yet. I'm going to be making an appointment for it shortly. I'm guessing it's the front cross member bushings because I was told they were starting to show signs of cracking.
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Old 12-07-2010, 11:10 AM   #4
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Quote:
"Ill take XI drivetrain for $2000 please Alex....."

"When worn and/or deviod of grease these can contribute to a significant shudder on acceleration...."

"What are the inner CV joints?"

"Correct for $2000"
My money is on this. Let us know what they find.

Last edited by GCoop; 12-07-2010 at 11:14 AM.
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Old 12-09-2010, 05:55 PM   #5
RobNH
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My money is on this. Let us know what they find.
Front control arm bushings were totally shot. Just got the car back from the shop.

$335.00 to replace the bushings, check the alignment and take it for a 20 mile road test.

Car drives great again.
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Old 12-09-2010, 06:04 PM   #6
bombguy
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Front control arm bushings were totally shot. Just got the car back from the shop.

$335.00 to replace the bushings, check the alignment and take it for a 20 mile road test.

Car drives great again.
Hmmm. did they check out the inner CV boots like everyone mentioned?
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Old 12-13-2010, 04:37 PM   #7
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Front control arm bushings were totally shot. Just got the car back from the shop.

$335.00 to replace the bushings, check the alignment and take it for a 20 mile road test.

Car drives great again.
I did my CV boots at around 100k but our cars are the same age so time may be as much of a factor as mileage. Watch for any sign of grease in your front wheels and if you see it don't delay. The bushing and control arms were done about 10k before the CV boots in my case.
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Old 12-09-2010, 06:02 PM   #8
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Originally Posted by GCoop View Post
"Ill take XI drivetrain for $2000 please Alex....."

"When worn and/or deviod of grease these can contribute to a significant shudder on acceleration...."

"What are the inner CV joints?"

"Correct for $2000"
Oh I'm sorry, the judges reviewed the tape and your answer was actually incorrect. We are going to have to deduct $4000 from your score.
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Old 12-09-2010, 08:18 PM   #9
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Oh I'm sorry, the judges reviewed the tape and your answer was actually incorrect. We are going to have to deduct $4000 from your score.
If what was posted is actually true he will be the first XI person to EVER have suffered a vibration/shudder on acceleration that was fixed by CABs........

Either that or the original symptom was not described accurately.


As far as Im concerned the jury is still out. I would like to see a longer sustained period at highway speeds before saying he is out of the woods. Mine and many others symptoms never started to show up until 45 min to an hour at highway speeds. I wonder if the worn CABs possibly magnify the issue.

In any case OP..... Please report back to this post later on to let us know if the CABs were truely the end of it. As I said I have never seen another XI person solve this issue with CABs. It would be nice to know.
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Old 12-10-2010, 04:47 AM   #10
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Nice now you get to loose her up again...in a few 100.000 klm you will have to start again..for now enjoy..
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Old 12-10-2010, 01:19 PM   #11
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ive been putting it off too long.. my driver side axle needs to be replaced im afraid.. i also have some leak up front that i cant trace to a source yet. im betting diff or transfer case as i never had a leak until i had my mechanic flush and fill them.. hopefully its just the need for a new fill/drain plug washer as he probably reused the old ones.

could a wheel bearing cause this vibration as well? the car seems to make a noise with the vibration as well. it does however come and go which is weird..
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Old 12-10-2010, 05:32 PM   #12
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Originally Posted by wdeerfield View Post
ive been putting it off too long.. my driver side axle needs to be replaced im afraid.. i also have some leak up front that i cant trace to a source yet. im betting diff or transfer case as i never had a leak until i had my mechanic flush and fill them.. hopefully its just the need for a new fill/drain plug washer as he probably reused the old ones.

could a wheel bearing cause this vibration as well? the car seems to make a noise with the vibration as well. it does however come and go which is weird..
The transfer case holds very little oil (Bentley manual says 0.16 qt), if it's leaking don't put it off. Jack up the car and try to rock the suspect wheel, if there is play it's the wheel bearing. I had similar vibration symptoms and it was the FCAB's.
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Old 12-11-2010, 09:04 AM   #13
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The transfer case holds very little oil (Bentley manual says 0.16 qt), if it's leaking don't put it off. Jack up the car and try to rock the suspect wheel, if there is play it's the wheel bearing. I had similar vibration symptoms and it was the FCAB's.
I have an appointment with my indy this week to take care of it all. I dont think its my fcabs as i have powerflex and they look like the day they went in.
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Old 12-11-2010, 09:37 PM   #14
mcopenha
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btw, i just posted a new front axle DIY here: http://forum.e46fanatics.com/showthr...161&highlight=

Same symptoms as OP, but it was clearly my axles. Boots were torn, grease everywhere.
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Old 12-15-2010, 05:14 PM   #15
wdeerfield
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ive been putting it off too long.. my driver side axle needs to be replaced im afraid.. i also have some leak up front that i cant trace to a source yet. im betting diff or transfer case as i never had a leak until i had my mechanic flush and fill them.. hopefully its just the need for a new fill/drain plug washer as he probably reused the old ones.

could a wheel bearing cause this vibration as well? the car seems to make a noise with the vibration as well. it does however come and go which is weird..
turns out i had a seized caliper on the passenger side front...
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