[s-cars] front end 'pop / clunk / clank / boom'

[Tom Green]

The violent shudder on deceleration seems to eliminate any small 
interference issue and points to a more serious suspension/drivetrain 
problem with a loose or worn out part.   I must always chuckle when 
reading a problem analysis " I just replaced the xxxx parts, so this 
can't be the problem ".  ;-)

Tom, musing on the scientific method

On Dec 1, 2004, at 4:29 PM,  Keith Maddock  wrote:
>
> Deja Vu again?  Had same popping problem on my 93 S4 after some front 
> end work.
>
> It had my mechanic stumped until he compressed the front wheels while
> the vehicle was on the lift.
>
> Turns out it was the front anti-roll-bar interfering with something,
> binding intially, and then releasing, hence the pop.  I wish I
> remember exactly what it was - but putting some sort of telltale
> coating on the anti-roll-bar should help pin-point the issue.
>
> Cheers,
> Keith
>
>
> On Wed, 1 Dec 2004 16:24:39 -0500, Krasusky Paul (WQQ2PXK)
> <wqq2pxk at ups.com> wrote:
>>
>> Hello my name is Paul and it's been 15 hours 7 minutes since my 
>> Quattro
>> broke...
>>
>> I've got a very loud front end pop going on now almost always, as 
>> described
>> above.  Happens when I'm say doing a 3 point turn in reverse and the 
>> wheels
>> go to full lock when at or near stop.  If it doesn't happen then, it 
>> will
>> once the wheels are then turned full lock the other way and I begin 
>> to go
>> forward again.
>>
>> It's so audible the Biff and Muffy were laughing at me as I backed my 
>> POS
>> Audi out of the spot in front of the hoytytoyty MB dealer, actually 
>> echoed
>> off the building.  Rossato says his seems to be doing the same, and 
>> as he
>> rightly sums up "it is very disconcerting".  Um, YEAH it is!
>>
>> Here's the rub:  threw the hoar on a lift yest., tech checked 
>> everything,
>> all's good in da hood.  WTF?  Bullshit, something's wrong, but what?