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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 10-08-2012, 09:49 PM
zongie zongie is offline
Zongie
Location: Minnesota
 
Join Date: Jan 2011
Posts: 23
Mein Auto: BMW 2003 330xi
Question Car Wobbles when pressing on Gas

Hi,

I have a 2003 330xi w/ a little over 130,xxx. I want to try to figure this out before actually taking it to the shop...I live in MN, I gave the car to my little brother to drive to Kansas and back. A week after I got it back, I notice this really bad wobble when I would step on the gas to get the car going. Feels like the wheels were going to fall off. It's AWD so I checked the tires to make sure they all had about 35-40PSI. I purchased the tires less than 6 months ago. After putting air in all of them. It settle down for like a day...then the wobbling started up again. What is going on? It only happens when I step on the gas to get the car up to speed. The steering wheel wobbles a little when I brake also. Can someone help me out?

Thank You
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  #2  
Old 10-09-2012, 08:07 PM
ArmyWife34 ArmyWife34 is offline
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Location: Tennessee
 
Join Date: Oct 2012
Posts: 3
Mein Auto: '04 BMW 325i
I was told by a shop my control arms were causing the vibrations (if I remember right). They wanted about $700 a piece to repair them....I've been holding off on the repair.

In my simple terms, they basically said that once the control arms start to go bad it allows for extra movement in the tires. Their explanation was more in depth but I can't remember their terminology If you take it to a shop, they can put it on a lift to examine them. The place I take it to for oil changes (a non-dealership shop) found it during their inspection.
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  #3  
Old 10-10-2012, 04:43 PM
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SJBimmer SJBimmer is offline
Living Life At The Beach
Location: In This Place
 
Join Date: Feb 2007
Posts: 3,810
Mein Auto: 2004 325 Convertible
Quote:
Originally Posted by zongie View Post
Hi,

I have a 2003 330xi w/ a little over 130,xxx. I want to try to figure this out before actually taking it to the shop...I live in MN, I gave the car to my little brother to drive to Kansas and back. A week after I got it back, I notice this really bad wobble when I would step on the gas to get the car going. Feels like the wheels were going to fall off. It's AWD so I checked the tires to make sure they all had about 35-40PSI. I purchased the tires less than 6 months ago. After putting air in all of them. It settle down for like a day...then the wobbling started up again. What is going on? It only happens when I step on the gas to get the car up to speed. The steering wheel wobbles a little when I brake also. Can someone help me out?

Thank You
Check your (CV) constant velocity joints. Usually the outers go first. To check them, grab the half shaft on either side of the joint and twist in opposite directions. If there is ANY movement, they are shot, and you will need to install new ones. If you see a torn boot, replace them also. I suggest replacing both sides at your mileage, and do not buy cheap for this item as you will then be chasing mysterious vibrations. Chinese knockoffs are cheap up front, but you pay later.
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