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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 04-28-2017, 02:22 PM   #1
Seanconner
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2001 330i steering wobble

Recently after replacing the control arms and bushings as well as steering coupler my car has a weird twitch in steering. It drives straight most of the time but as soon as you hit a bump or imperfection it sends a vibration through the steering column and the wheel rocks back and forth. Most of the time the car stays planted but at speeds over 70 mph it will send you into the next lane.. not sure what his could be as everything feels tight in the suspension. The only thing that I myself could find that had play in it was the steering shaft itself which once replaced did absolutely nothing. Really needing to pin this down as the car is pretty much un-driveable at this point due to it being such a hassle to keep on the road and how annoying it is every time you go over a bump the whole steering wheel wobbles and clunks. I've been thinking MAYBE steering rack but have thought unlikely due to the fact that this problem wasn't there until after replacing CA's, Bushings and coupler (all at same time)
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Old 04-28-2017, 02:26 PM   #2
Spannerhead
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How much life left in your tires? Did you have an alignment done after replacing all the suspension components?

A misaligned E46 is pretty spooky to drive.
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Old 04-28-2017, 02:32 PM   #3
Seanconner
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Two rear tires are brand new & fronts have about 75% tread left and in good condition, have tried rotating them all with correct psi for each. & yes after replacing these it was incredibly hard to drive and the first place it went was to get an alignment done which they said was "completely out". Even with the alignment out I could feel the steering wheel wobbling which felt out of ordinary even for the alignment bring out. Alignment fixed the pulling but not the uncontrollable wobble.
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Old 04-28-2017, 04:31 PM   #4
Alex323Ci
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what type of control arms and bushings did you install? if you used those powerflex ones i'd say the bushing popped out.

otherwise such a drastic change in steering would lead me to believe something wasn't installed correctly. or like maybe a defective balljoint being shot or bushing slop.

it isn't uncommon for people replacing CAs and CABs to feel other defective items on their car because it's tight now and the mush it was before hid stuff. but your description sounds much more than that.
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Old 04-28-2017, 04:44 PM   #5
Seanconner
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Honestly I'm not entirely sure of brand, it came in a complete suspension kit purchased off eBay which is sounding not to be the smartest. They did seem rather robust though and the bushings were tight as I had trouble getting them on. How can I tell if a bushing has "popped out"?
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Old 04-28-2017, 04:56 PM   #6
Alex323Ci
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"robust" new going in to be installed isn't the same as when it's seen real use if the product is defective/poor quality.

"eBay" doesn't mean it's bad, the sellers using eBay site might be selling a good brand. but too often people go to ebay for the cheapest parts and those are often crap china junk.

when you look underneath at the CAB "popsicle" you'd notice the black rubber bushing being out of place and moved out of the popsicle bracket.
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Old 04-28-2017, 07:08 PM   #7
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With few posts it's understandable that you'd find the best "deal" you could on ebay. My friends with other brands like Ford, Toyota and Honda do it all the time,with mostly positive results. They think I'm nuts for sticking to known quality brands or BMW parts for my E46. But your example is why I do.
Meyle HDs, Lemforder, or BMW are my brand of choice for CA kits.
The good news is it will take you half the time to reinstall a new kit.
Adjust search below for your year and model.

https://www.ecstuning.com/b-meyle-hd...l-1/e463112-1/


https://www.fcpeuro.com/BMW-parts/32...ol%20arm%20kit

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Old 05-01-2017, 08:22 PM   #8
ctad
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Not that this is the problem, but the owner's manual actually states not to rotate the wheels.
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Old 05-01-2017, 09:16 PM   #9
jdstrickland
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Personally, I'm thinking you need a re-do. I replaced the entire suspension in my E36, and it drove straight as an arrow from the first moment it hit the floor. Not straight as an arrow, really. More like straight as a 5.56 round leaving the end of my rifle. The round goes precisely where I point it, I don't point it very well but that's a different issue. The arrow works an arc, sort of.
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Old 05-01-2017, 09:18 PM   #10
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When was the last time the struts and strut bearings were replaced?
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Old 05-01-2017, 11:20 PM   #11
44thmotiondrummer
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Do u hear a click when u turn? It could be the axle


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Old 05-01-2017, 11:50 PM   #12
tech4tech
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A while back I had replaced my front control arms and bushings with Meyle HDs -- a choice I now regret, purchased from oembimmerparts. When I took a car for alignment afterwards, they commented that the toe had to be adjusted by a rather large amount. Now I have bump-steer, and more specifically it feels that the vertical bumps of the road translate to jerking the steering wheel left and right. I am not sure if the replacement arms were substandard or something else is amiss.

Last edited by tech4tech; 05-01-2017 at 11:56 PM.
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Old 05-02-2017, 12:01 AM   #13
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First off, where did you get your allignment done? They legit?
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Old 05-02-2017, 01:07 AM   #14
tech4tech
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My alignment was legit (sorry for hijacking this thread)
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