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Old 08-30-2015, 05:48 PM   #1
goodwinlogan93
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Angry Rear Differetial Vibration at 65MPH and Above

Help i have a 01 325i auto with 52xxx miles on it. I was going on a trip and i got about 50 miles out of town and i felt a vibration like i was hitting the rumble strips on the side of the road so i puller over and found out that i blew my rear pinion seal. After buying a new rear end and installing it i now have the same vibration like im hitting the rumble strip when i go about 63 MPH or above and it gets worse as i go faster. Its there whether im on the gas or not. PLEASE HELP!!!!!
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Old 08-31-2015, 03:34 PM   #2
goodwinlogan93
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Any help would be appreciated its been like this for a month and a half and when you cant go over 55 MPH with a car it makes the car useless.
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Old 08-31-2015, 03:35 PM   #3
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Have your flex disk, u-joint and driveshaft looked at. Was an alignment done? How are the tires? Did you check the wheel bearings for play? How is the suspension? Provide us with more information so we don't have to guess lol
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Old 08-31-2015, 03:51 PM   #4
goodwinlogan93
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Alignment done last fall, new tires and rims in the spring suspensions great.
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Old 09-09-2015, 04:28 PM   #5
goodwinlogan93
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Still doing the same thing would like to get it fixed before winter hits any help greatly appreciated.
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Old 09-09-2015, 05:35 PM   #6
Chris951
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Flex disc/center support bearing/driveshaft


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Old 02-21-2016, 07:55 PM   #7
goodwinlogan93
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so after all this time i finally got around to changing the flex disk and center support bearing and it still does the same thing. I do know that it doesn't vibrate under load while i'm accelerating all the way but a soon as i let off the gas at 65 it starts to vibrate.
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Old 02-22-2016, 10:10 AM   #8
rsyed07
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Could be a unbalanced drive shaft that goes off at certain frequencies i.e. between 60 to 65mph or bad u joints.
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Old 02-23-2016, 12:04 AM   #9
goodwinlogan93
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I checked the u-joints and didn't feel any play the vibration also gets worse as i increase in speed.
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Old 02-26-2016, 06:49 PM   #10
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Bump
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Old 02-26-2016, 06:52 PM   #11
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I was going to say CV joint but you have a 325. Get the EGS scanned for torque converter error codes.
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Old 02-26-2016, 07:44 PM   #12
goodwinlogan93
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Quote:
Originally Posted by clabcon View Post
I was going to say CV joint but you have a 325. Get the EGS scanned for torque converter error codes.
Will a check engine light come on can i check it with a obd2 scan tool. I live 4 hours away from a bmw dealership but i work at a chevrolet dealership.
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Old 02-26-2016, 08:10 PM   #13
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Have you confirmed that the yokes on the drive shaft are on the same plane. If the drive shaft halves were separated at the slip joint in the middle and the shaft was reassembled without paying attention to the orientation of the yokes, the out-of-phase condition can cause a vibration of the sort you are asking about. Sadly, you have to drop the exhaust yet again to gain access to the drive shaft.
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Old 02-26-2016, 08:14 PM   #14
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Also, you replaced the diff. What are the chances that you installed a defective one?

And, the rims... Are they from a 3 Series, or are you running some from a 5 Series? The center bore on the 5 Series rims is larger than the hub on the 3 Series. This means that you can install the tires out of center, the result will be a vibration that mimics tire balance. Of course, you can have a tire defect that will cause this.
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Old 02-26-2016, 10:18 PM   #15
goodwinlogan93
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Quote:
Originally Posted by jdstrickland View Post
Have you confirmed that the yokes on the drive shaft are on the same plane. If the drive shaft halves were separated at the slip joint in the middle and the shaft was reassembled without paying attention to the orientation of the yokes, the out-of-phase condition can cause a vibration of the sort you are asking about. Sadly, you have to drop the exhaust yet again to gain access to the drive shaft.
I changed the center support bearing myself and know it went back together the same way. Its possible the diff is bad but the rims are original and i have 2 sets and both have been on the car.
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Old 03-05-2016, 07:53 PM   #16
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Bump.
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