[V8] Bumptey, Bumpety, Bump, Bump, Bump

[Mark Kalbskopf]

Al,

A good point.
By the "lower control arm" do you mean what the manual calls the "  
trapezoidal arm"?
I can already see that the bushing on the very top of the hub housing  
(the one that connects to the transverse/camber link) is shot.

Mark.



On Dec 26, 2009, at 2:53 PM, 32VQUATTRO wrote:

> In order for a bad bump stop to be the culprit, the shock would have  
> to fully compress first. If your driving over known bumpy roads, I  
> doubt you driving fast enough to compress the shock fully (that is  
> unless you beat on your car ) What's more likely the problem, in my  
> opinion, is a bad lower control arm bushing, or camber link (in that  
> order) The bushing I would look at first, would be the most forward  
> bushing on the lower control arm. Depending on the year of your car,  
> this will either have two or three bolts going to the chassis and  
> one bolt going through the bushing into the lower control arm. Good  
> luck. Al
> ----- Original Message ----- From: "Ingo Rautenberg" <ingo.rautenberg at gmail.com 
> >
> To: "Mark Kalbskopf" <gbmarc at cox.net>
> Cc: <v8-bounces at audifans.com>; "V8List Fans" <v8 at audifans.com>
> Sent: Saturday, December 26, 2009 1:42 PM
> Subject: Re: [V8] Bumptey, Bumpety, Bump, Bump, Bump
>
>
>> Mark,
>>
>> This will get stripped on the list, but I've attached a PDF I made  
>> of the
>> pertinent Family Album section: Main Group 5, Sub Group 5,  
>> illustration
>> 48-10.  Bump stop is number 9, and that includes a (iirc) black  
>> cover and
>> orange hard rubber bump stop, PN# 441 512 129
>>
>> Regards,
>>
>> Ingo
>>
>> On Sat, Dec 26, 2009 at 1:30 PM, Mark Kalbskopf <gbmarc at cox.net>  
>> wrote:
>>
>>> Ingo,
>>>
>>> I don't see a rubber bump stop. At least nothing that looks like  
>>> the one in
>>> the manual diagram 42-70-1. There's nothing visible around the  
>>> shiny piston
>>> part either. If I remove what the manual calls the  'protective  
>>> boot' and
>>> 'protective cap' then I could possibly imagine the top 1/4" of  
>>> something.
>>> Should it be clearly visible?
>>>
>>> Mark.
>>>
>>>
>>>
>>> On Dec 26, 2009, at 12:53 PM, Ingo Rautenberg wrote:
>>>
>>> Mark,
>>>>
>>>> Couple things. Yes, could well be a blown shock. Or/and the  
>>>> rubber bump
>>>> stop may well have disintegrated. Have you had any suspension  
>>>> work done on
>>>> that side? If so it could also be something improperly-tightened/  
>>>> loose.
>>>> Another source for a noise like you are describing is either  
>>>> missing or
>>>> failed rear differential mount (hard to see because it's above  
>>>> the diff
>>>> iirc). That's all I can with of for now. Good luck.
>>>>
>>>> Ingo Rautenberg
>>>>
>>>> -----Original Message-----
>>>> From: Mark Kalbskopf <gbmarc at cox.net>
>>>> Date: Sat, 26 Dec 2009 12:46:07
>>>> To: <v8 at audifans.com>
>>>> Subject: [V8] Bumptey, Bumpety,  Bump, Bump, Bump
>>>>
>>>> While dashing thru the snow on my 254 horse old sleigh,
>>>> I have this sporadic thump,  thump, thump from behind the rear LHS
>>>> passenger as we go over the deeper holes..
>>>> My road is like a rutted farm track with 'pot holes' in the snow  
>>>> down
>>>> to the asphalt every so often.
>>>> It sounds like something is hitting the body or almost like the  
>>>> Left
>>>> rear suspension is bottoming out (hard to beleive)
>>>> Everything is quiet once we're on smooth surface again.
>>>>
>>>> I have the car up in the air right now but can't see anything  
>>>> loose.
>>>> The exhaust is very firmly attached.
>>>> I have never changed the rear shocks in the 10 years I've had the
>>>> car.  Could this simply be worn out shocks?
>>>>
>>>> Mark.
>>>> _______________________________________________
>>>> Audifans V8 mailing list
>>>> Send posts to: mailto:V8 at audifans.com
>>>> Manage your list connection: http://www.audifans.com/mailman/listinfo/v8
>>>>
>>>> You can help keep the audifans site running by shopping at
>>>> http://audifans.com/shop/
>>>>
>>>>
>>>
>> _______________________________________________
>> Audifans V8 mailing list
>> Send posts to: mailto:V8 at audifans.com
>> Manage your list connection: http://www.audifans.com/mailman/listinfo/v8
>>
>> You can help keep the audifans site running by shopping at http://audifans.com/shop/
>