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X3 E83 (2004 - 2010)
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  #1  
Old 05-05-2013, 05:37 PM
tlow1 tlow1 is offline
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Location: San Diego
 
Join Date: May 2013
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Mein Auto: E83 X3
Another transmission/diff/transfer case problem

Hi guys,

Long time lurker...I searched and searched and couldn't find exactly a similar situation on this forum.

So my 2006 X3 developed what I would guess is the standard transmission/transfer case clunk about 3000 miles ago when it had about 90k miles. I changed out the tires to new Pirellis per BMW specs, changed transfer case fluid, transmission filter/fluid, and diff fluid, all per BMW fluid and specs. Further, I rotated the actuator gear on the transfer case per the sticky above. None of it really fixed the issue until I rotated the gear. So I figured it was definitely the actuator gear.

All of this made the issue way better, not fixed, but much much better...until about 4-5 weeks ago. The clunking got worse...bought a new actuator gear off ebay and it made the problem a little better, but not to the point when I rotated the gear. Now a couple weeks later, its as bad as ever. Further, now when I coast I get the clunking when coming up to a stop light while off the brakes. It does it while on the brakes as well. Next, I also get the clunking under low speed like off throttle in a parking lot looking for a space.

The off throttle clunking or stuttering feels slightly different than when on throttle. Sounds and feels more like it is coming from the diff and or too much back-lash in the drivetrain somewhere. The normal clunking occurs in all gears and pretty much any rpm. It is most noticeable in the 2500-4000 rpm range.

Any thoughts? I was going to take it in to get the software updated, but I don't think that is going to solve the issue. May help, but not fix it.
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  #2  
Old 05-15-2013, 06:21 PM
aturkinside aturkinside is offline
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Location: New Jersey
 
Join Date: Mar 2008
Posts: 20
Mein Auto: 2004 BMW 330I ZHP
Might sound dumb but check your lug nuts and make sure they are tight. Otherwise My clunking was fixed with what you already addressed which were tires and transfer case fluid change.
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  #3  
Old 05-16-2013, 08:48 AM
tlow1 tlow1 is offline
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Location: San Diego
 
Join Date: May 2013
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Mein Auto: E83 X3
Nothing sounds dumb at this point. I will check that. I also found another link on here or bimmerpost that talks about checking the subframe bolts to make sure those are tight as well.

I still have not done the software update...anyone think its worthwhile to spend the $150 or so to get it done?
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  #4  
Old 05-16-2013, 12:54 PM
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X3emist X3emist is offline
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Location: NW Georgia USA
 
Join Date: Nov 2009
Posts: 1,311
Mein Auto: 06 X3 Sport
Uh search again

I just posted a relevant post a couple days ago which I am guessing is where you got the subframe idea. However, I think you missed the part about the loose t-case mounts. Check this out again-
http://www.bimmerfest.com/forums/sho...d.php?t=695692
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Last edited by X3emist; 05-16-2013 at 05:44 PM.
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  #5  
Old 05-16-2013, 07:41 PM
tlow1 tlow1 is offline
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Location: San Diego
 
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Mein Auto: E83 X3
Thanks. Im going to check out that stuff this weekend. Im obviously not giving up on any ideas, but I don't have the turning the steering wheel clunking/popping.
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  #6  
Old 05-17-2013, 08:01 AM
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X3emist X3emist is offline
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Location: NW Georgia USA
 
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Mein Auto: 06 X3 Sport
Read carefully

The clunk/pop from turning the steering wheel is a completely separate issue. What I was pointing out in my post was that in the process of fixing that issue they discovered a bunch of stuff loose including the tcase mounts. And, tightening them which was an ancillary repair resulted in a nice surprise, no more clunk.
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2006 X3 Silver Grey/Black Lthr/Alum Trim/Sport Prem Pkg/Xenons/Servotronic/Prem Sound/Satellite Radio/Heated Seats/Carbon Fiber Pillars/Blue Tooth/Aux In/Cargo Net/Aluminum Pedals/V1 Hardwired
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  #7  
Old 05-25-2013, 03:06 PM
tlow1 tlow1 is offline
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Location: San Diego
 
Join Date: May 2013
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Mein Auto: E83 X3
Here is the latest. I checked all the motor mounts, suspension, front subframe bolts...all tight. So I bit the bullet and picked up a rebuilt one...This guy is awesome fyi and worth checking out if you need a transfer case:
http://www.ebay.com/itm/BMW-X3-Trans...2632f7&vxp=mtr or handle: rocketcoupe on ebay

Anyway, the transfer case resolved the clunking, slipping feeling under acceleration...woo hoo! But............now, the clunking coming from the rear of the car is somewhat worse but it only happens under super low speed <5mph and making semi tight to super tight turns both left and right turns. IE parking garage/lot/driveway. And, I still get 1-2 minor clunks from the rear when I pull up to a stop at a light, maybe at speeds going down from 3mph-0mph. All this leads me to believe something with the rear diff. Anyone had this issue? Could the software update potentially fix this?
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clunking, stutter, transfer case, transmission, x3


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