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E90/E91/E92/E93 (2006 - 2013)
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Old 07-23-2013, 07:35 PM
SouthTX08E90 SouthTX08E90 is offline
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Mein Auto: 328i
Question 2008 328i with shudder

I've tried searching the forums and have found so much information it's become confusing. I was hoping to limit further information gathering to specifically 2006-2008 328is in an attempt to narrow it down.

Bought the car in March and did not notice any issue during a 2 hour test drive. However, after a bit of ownership, I started feeling a distinct shudder/vibration from, i believe, the rear end. I assumed it was because of the mis-matched tires, so I put brand new Potenzas on and had an alignment done at the same time. Sadly, no relief.

I decided to try the local dealership. The mechanic was able to replicate the issue and after diagnosis found the 2A87 fault. So, they replaced both solenoids and did an oil and filter change. Sadly, no relief.

I can cruise down the highway at 75 mph with the cruise-control set for miles with no symptom. But, once I'm driving around town or navigating slight inclines, the shudder returns. It is most pronounced between 25 and 45 mph when under a medium acceleration load. If I depress the accelerator to wide open throttle, there's no shudder until I back off and then return to medium acceleration.

Taking the car back to the dealership on Tuesday for a battery cable recall that hadn't previously been addressed and want them to revisit the shudder issue.

Anyone else have this problem with an 06-08 328i AT RWD? By the by, the car has 49,500 miles and after further investigation of a lot of little coincidences, like cracked right kidney grill and shallow dents on the passenger side, may have been in an accident.

Thanks.
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Old 07-24-2013, 06:43 AM
fdriller9 fdriller9 is offline
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Mein Auto: '06 AW 330xi
Check bushings and wheel bearings.
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Old 07-24-2013, 06:56 AM
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BiHoTTo115 BiHoTTo115 is offline
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Mein Auto: 2006 330xi
Beat me to it, but yes, the rear wheel bearings need to be checked. Take off the tire and play with the rotor, if there's significant play when moving it, it's the bearing. Roughly $50-60 per side for parts alone.
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Old 07-24-2013, 07:24 AM
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CALWATERBOY CALWATERBOY is offline
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Mein Auto: 2009 E93 N54
Quote:
Originally Posted by SouthTX08E90 View Post
I can cruise down the highway at 75 mph with the cruise-control set for miles with no symptom. But, once I'm driving around town or navigating slight inclines, the shudder returns. It is most pronounced between 25 and 45 mph when under a medium acceleration load. If I depress the accelerator to wide open throttle, there's no shudder until I back off and then return to medium acceleration.

Dude! First things first: Re-torque all suspension parts. Yup, every one. A trivial job on a lift, but let's make SURE your wheels are at normal ride height when it's done - important!

Next up: Check alignment, toe especially.

OK - what was found?





.

Last edited by CALWATERBOY; 07-24-2013 at 07:31 AM.
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