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Go Back   E46Fanatics > Tuning & Tech > Suspension & Braking

Suspension & Braking
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!

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Old 12-08-2010, 09:51 PM   #1
adrianpl
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Knocking noise from steering

I am getting a knocking noise from my steering. It happens when going over distortions in the road.
I noticed that i also happens when i am driving on a even road and i turn the steering wheel from side to side causing the car to swerve.

I have changed the following:

Control Arms and bushings
Sway bar end-links
Tie Rods
Steering coupling

Running out of ideas
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Old 12-09-2010, 12:08 PM   #2
adrianpl
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bump
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Old 12-09-2010, 07:28 PM   #3
adrianpl
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anyone?
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Old 12-09-2010, 07:56 PM   #4
TxZHP04
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Well, start by inspecting the parts that haven't been replaced.

Check the sway bar bushings for play. Check the strut mounts. Depending on mileage, could even be the struts. Double check to make sure the end links are properly torqued. Sometimes they may feel snug but it's just from the load of the suspension and while driving they will still move around. Make sure the front subframe bolts are snug. Check the engine mounts. Make sure the steering rack is secure.

I'd wager on strut mounts and struts but it could be any number of things.
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Old 12-12-2010, 12:10 PM   #5
adrianpl
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Strut mounts and struts are stock and are from a different car since i only put them on to get my subframe fixed. Would they be making noise when switching direction while driving in a straight line?
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Old 12-17-2010, 07:49 PM   #6
alvocado
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A steering knock could be related to the steering shaft ujoint. The only way to diagnose this is get the car up in the air on a flat rack like an alignment rack with the wheels loaded, have someone turn the wheel while someone else feels each joint for play. You might be able to access the steering shaft ujoint from above while the car is on the ground as a starting point. I'd check that first before randomly replacing expensive suspension components.
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