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  #1  
Old 09-07-2019, 06:12 PM
Jat007 Jat007 is offline
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Clunk sound when tighten the driver side wheel

Hi guys,

So, I have been dealing with a slight clunk front end noise when I accelerate or braking in my 2004 X3 E83. I have looked and looked but I can't see anything is loose or broken. I did replace the tie-rod end links thinking it might be it, but that didn't solve anything.

When I replaced the front brake pads today and when I was done with the brake job, I torque down the front lug nuts and I noticed a slight clunk noise coming from the driver side.

Again, I don't or what I should be looking as I don't see either the ball joint or the front strut is leaking. What could this be?

Anyone has any ideas about what I should be looking for?

Thanks in advance

Jay
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Old 09-07-2019, 07:25 PM
dukedkt442 dukedkt442 is online now
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Either thrust arm bushings, sway bar end links, or both.


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Old 09-07-2019, 07:51 PM
Jat007 Jat007 is offline
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Sway bat end links been replaced. What's thrust arm bushings?

Thanks!!
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Old 09-07-2019, 11:58 PM
dukedkt442 dukedkt442 is online now
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The bushings in the thrust arms, otherwise known as the longitudinal control arms (I forget if they are referred to as upper or lower...they’re the ones run fore-aft). The bushings are hydraulic and can fail by leaking oil, but not always.


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Old 09-08-2019, 06:31 AM
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Worn out cv joints.
Worn out sway bar bushings
Worn out strut mounts
Toasty wheel bearings
Any of the other bushings/ball joints.
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Old 09-08-2019, 07:03 AM
Jat007 Jat007 is offline
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Are talking about the front control arms? From my research, there's a front rearward and front forward control arm (see picture). Am I on the right track?

Thanks,

Jay
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Old 09-08-2019, 08:09 AM
dukedkt442 dukedkt442 is online now
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Clunk sound when tighten the driver side wheel

The lower pic is the one I’m referring to... clunking can be from anywhere as Q said, but those bushings seem to be the most common failure items next to the sway bar links. I personally don’t like “upper and lower” descriptions of these as both are below the knuckle, and “foreword/rearward” is also vague as they’re at 90*. Longitudinal/transverse is more descriptive. The longitudinal arms undergo much more stress than the transverse arms, and their bushings correspondingly fail much more often.

That being said, don’t replace willy nilly. Check bushing deflection with a pry bar or fluid. I’m also assuming the clunking is during driving, and not simply when torquing the wheels.


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Last edited by dukedkt442; 09-08-2019 at 08:11 AM.
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Old 09-08-2019, 08:39 PM
Jat007 Jat007 is offline
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dukedkt442 - You're correct, the clunking sound when applied the brakes and go over small bumps not just tighten the lug nuts. In the beginning, I thought it was the sway bar links, so I replaced those and the clunking sound is still there. I will look more into how to do a stress test of the longitudinal arm.

Thanks!!
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