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2003 Audi A6 Vibration and noise when making turns

Tiny
ZHCHCH
  • MEMBER
  • 2003 AUDI A6
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 62,000 MILES
I have a 2003 Audi A6. It has been making loud noise from the front axle when I make a turn (either way), the steering is also vibrating. I asked Audi dealer to check the problem, but they told me it might because of the air bubbles in one transmission pump and should not a big problem. But the noise has been really loud lately, especially in the cold morning. I also changed the front CV joints half year ago. Do you know what are the other possible reasons?
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Thursday, January 3rd, 2008 AT 10:31 PM

3 Replies

Tiny
ASANDBERG6
  • MEMBER
  • 25 POSTS
Is this turning the wheel while stationary, or driving thru a turn? A bad CV joint will make a loud knocking noise driving thru a turn but usually wont vibrate much. In my experience at the audi dealership I worked for, its difficult to get the correct replacement shaft the first time. If you have the wrong length shaft it could be binding and casing noise/vibrations.
If its making noise while tuning the wheel at a stop, it could be air in the power steering, or dry ball joints/tie rod ends.
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Sunday, January 6th, 2008 AT 11:32 AM
Tiny
ZHCHCH
  • MEMBER
  • 2 POSTS
Thank you for the fast reply, asandberg6. It is making the turning noise while stationary and driving, turning the steering will give loud noise but it is not a knocking noise, just like buzz and hum. The vibration is not that bad. I changed both the CV joints half a year ago, so they should be fine. The Audi dealer actually mentioned about the air in the power steering, but they said it is fine. Now it sounds even worse, so is there a way to get rid of the air?
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Tuesday, January 8th, 2008 AT 8:36 PM
Tiny
ASANDBERG6
  • MEMBER
  • 25 POSTS
You want to check the fluid level and turn the steering wheel slowly from lock to lock to work any air out of the rack&pinion. I say slowly because you dont want to aerate your fluid any more than it is. Sounds like you have air in the system, but it might possibly be a bad pump or steering gear.
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Sunday, January 13th, 2008 AT 1:27 PM

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