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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 12-06-2011, 02:37 PM
usmarinetx usmarinetx is offline
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Question Something is loose!!

My wife drives a 2005 325i she bought before we got married. A couple of years ago, her ex replaced the sway bar (?) or some other type of suspension/steering piece. They also replaced the front brakes. I'm embarrased to say I ran a shop for many years, have LOTS of tools, and am very familiar with vehicles, but Euro cars just scare me to death. (Had an 01 Trans Am that out 505hp to the wheels). The issue is when she steps on the brakes, there is a noticable jolting feeling in the peddle. It's as if wheel is loose on the hub. Anyone have any idea what this could be? Thanks for the help.
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  #2  
Old 12-06-2011, 02:39 PM
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loose on the pedal or do you mean steering wheel jolt?. if it steering wheel jolt to the left or right. That'd be bad control arm bushings. Not sure about the pedal though...
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  #3  
Old 12-06-2011, 02:45 PM
usmarinetx usmarinetx is offline
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Sorry, I should have been more clear. It's not the peddle itself and it can only be felt in the brake peddle when the brakes are applied.
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  #4  
Old 12-06-2011, 02:53 PM
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Quote:
Originally Posted by usmarinetx View Post
Sorry, I should have been more clear. It's not the peddle itself and it can only be felt in the brake peddle when the brakes are applied.
Does the steering wheel shake at all?. Sounds like it could be brake pads/rotors.
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Last edited by MalibuMafiaV; 12-06-2011 at 02:54 PM.
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  #5  
Old 12-06-2011, 02:57 PM
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Sounds like they replaced the brakes and never touched the rotors. If they resurfaced the rotors they may be too thin and warped with heat, I would check out the rotors
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  #6  
Old 12-06-2011, 02:59 PM
Bilstein Bilstein is offline
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From the sound of it the front suspension is rocking backward as the front of the car gets loaded through braking pressure. Like if you could run along side the car as she was driving and applied the brakes you'd see the whole wheel rock backward by something less than an inch. That sounds like the control arm bushings are shot.

I'll go out on a limb here and guess she get's similar jolts going over uneven surfaces or speed bumps? If not then it's probably what these guys here have said and it's specific to your brakes.

Last edited by Bilstein; 12-06-2011 at 03:00 PM.
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  #7  
Old 12-06-2011, 03:01 PM
usmarinetx usmarinetx is offline
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Nope. No shaking in the steering wheel at all. Just a weird "clunk" when the brake pedal is pressed. As you press the brake pedal down, you can feel the brakes engage then you feel the "clunk"
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  #8  
Old 12-06-2011, 03:03 PM
usmarinetx usmarinetx is offline
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Quote:
Originally Posted by Bilstein View Post
From the sound of it the front suspension is rocking backward as the front of the car gets loaded through braking pressure. Like if you could run along side the car as she was driving and applied the brakes you'd see the whole wheel rock backward by something less than an inch. That sounds like the control arm bushings are shot.

I'll go out on a limb here and guess she get's similar jolts going over uneven surfaces or speed bumps? If not then it's probably what these guys here have said and it's specific to your brakes.
I think your spot on! Anyone found a DIY on this website to fix it?
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  #9  
Old 12-06-2011, 03:42 PM
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^^
For control arm bushings?. Smolck on here has a good DIY for it and a video as well.
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  #10  
Old 12-06-2011, 04:25 PM
Bilstein Bilstein is offline
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Here's a Bav Auto DIY for the arms and the bushings to get you started.

Cabs have to be one of the top 5 most hashed out topics around here after oil, and wheels/tires, etc, so search using the Google box on the upper right of this page.

Good luck and Semper Fi.
Attached Files
File Type: pdf 2006_n406_newsletter.pdf (435.4 KB, 66 views)
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  #11  
Old 12-06-2011, 05:03 PM
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Your CABs are shot. Have your wife drive slowly along side you as you stand on the side of the road, and have her nail the brakes as you watch the front wheel. I`m betting you`ll see it move backwards a couple inches when she does this.
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Old 12-06-2011, 05:06 PM
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Here ya go:

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  #13  
Old 12-06-2011, 08:44 PM
usmarinetx usmarinetx is offline
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wow! you guys are awesome. I had the wife drive the car up/down the street tonight. The tires don't move at all like the video above. Also, it doesn't seem to do it all the time. It may have down it once when she was braking up an incline. I might just remove the tires and tackle the brakes first.
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  #14  
Old 12-07-2011, 07:15 AM
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jonathan2263 jonathan2263 is offline
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I'll take Rear Diff Bushing for $100 Alex...

It's a common wear item that causes a clunk sound and feel to come from the rear when you apply the brakes.

Also, I thought I had that problem but it went away when I replaced my broken rear springs, also a common issue.
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Last edited by jonathan2263; 12-07-2011 at 07:17 AM.
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  #15  
Old 12-07-2011, 10:02 AM
mujjuman mujjuman is offline
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My bet is on the control arm bushings too. Also with bmws, it is common to replace pads AND rotors at the same time.
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