JacobMY2010
30-08-2015, 06:52 PM
Hi All.
My car is Audi A4 2010 (60k miles) Estate S-line .
Few weeks ago I have noticed knocking noise from the front passenger(left) suspension and since then couple of mechanics looked at it and checked for playing (by using a metal bar) all arms and surrounding parts plus tightened subframe bolts and couldn't find anything wrong so far - no knocking noise.
The knocking noise happens when moving slowly over uneven pavement such as moving about 5-10 mph in a parking , sometimes knocks while turning on low speed(parking) but never when turning stationary , sometimes this can be simulated by going forwards and backwards (knocking once at each change of direction), knocks when you accelerate and decelerate at low speed.
On smooth roads it never makes the noise even at low speed (except when changing gear from 1 to 2 when engine is released then lifted again). Once the car is moving more than 20 miles per hour or so it's gone or at least I never hear it.
Summary:
1) on uneven roads while driving and turning - it knocks quite alot but only on small bumps , nothing on big speed bumps
2) accelerating and decelerating at low speed - it knocks once when accelerating and second time when decelerating
3) going forwards and backwards - knocking once at each change of direction
Not sure if weather condition got any influence(when its hotter it knocks more and louder) or part temperature is related on it but I have tried to reproduce the noise on couple of mornings and couldn't get any noise but after driving the car for 20 mins I could hear it just then drove it for another hour and noise was clear and loud.
Don't know really what to do next , do anyone knows any tests to perform which could eliminate good parts? Thanks for any advices.
Please Help!!! ^^
My car is Audi A4 2010 (60k miles) Estate S-line .
Few weeks ago I have noticed knocking noise from the front passenger(left) suspension and since then couple of mechanics looked at it and checked for playing (by using a metal bar) all arms and surrounding parts plus tightened subframe bolts and couldn't find anything wrong so far - no knocking noise.
The knocking noise happens when moving slowly over uneven pavement such as moving about 5-10 mph in a parking , sometimes knocks while turning on low speed(parking) but never when turning stationary , sometimes this can be simulated by going forwards and backwards (knocking once at each change of direction), knocks when you accelerate and decelerate at low speed.
On smooth roads it never makes the noise even at low speed (except when changing gear from 1 to 2 when engine is released then lifted again). Once the car is moving more than 20 miles per hour or so it's gone or at least I never hear it.
Summary:
1) on uneven roads while driving and turning - it knocks quite alot but only on small bumps , nothing on big speed bumps
2) accelerating and decelerating at low speed - it knocks once when accelerating and second time when decelerating
3) going forwards and backwards - knocking once at each change of direction
Not sure if weather condition got any influence(when its hotter it knocks more and louder) or part temperature is related on it but I have tried to reproduce the noise on couple of mornings and couldn't get any noise but after driving the car for 20 mins I could hear it just then drove it for another hour and noise was clear and loud.
Don't know really what to do next , do anyone knows any tests to perform which could eliminate good parts? Thanks for any advices.
Please Help!!! ^^