It felt like the rear right wheel stopped briefly.
Just a feeling,  I guess it could be the whole back end.
I had a front end realignment last week.
Also last week a shop replaced the water pump and rebuilt the power
steering pump.
My van is an automatic.
Standard vanagon engine.

Thanks,
Arlene
Wolfsburg 1987

On Wed, Jan 30, 2013 at 7:59 AM, Roger Whittaker <rogerwhitt1@gmail.com>wrote:

> dear clunk
> depending on the year of the vehicle and the size of the engine there
> could be other things going on ...
> is it a transplant power source ... how long ago ... did work get done one
> the vehicle recently ... maybe the worker did something to the rear "wheel"
> to help or investigate an issue ... were you going around a corner when the
> thump occurred - there may be something in the rear area that swings out
> and slaps the wall of where-ever when it swings back into place...
> maybe the rodents in your vehicle are having a domestic dispute and are
> tossing the bits of furniture at one another ...
>
> maybe your wheels are about to fall off ...
> are you sure the sound came from the rear wheel area ... and if so why are
> you sure that is where the sound comes from ...
>
> often i get my little brother to ride on the back bumper upside down and
> with his head under the rear of the van ... i re enact the scene ...
> freeway or what ever the driving conditions were (he really dislikes the re
> enactments in the farm yard) ... then when the sound or occurrence we are
> in pursuit of happens again i slam on the brakes and stop .. right there
> ... so he can tell me what is going on when it happens ... not ...
>
> sorry i got carried away ... :) actually we put the vehicle on the hoist
> and run it up in the air and then simulate actual driving conditions ...
> somehow that does not sound any safer than the little brother method ...
>
> regards
>
> On Wed, Jan 30, 2013 at 7:13 AM, Sondergaard, Arlene <asonder@usgs.gov>wrote:
>
>> On the freeway this morning the passanger side rear wheel clunked like I
>> hit a rock.  It happened 2 more times.  Got off freeway to examine tire.
>> Pressure around 45 tire, looks normal, grab and shake-no give.  The belts
>> look o.k.    Drive the backroad the rest of the way to work for lower
>> speeds and i happened again 2wice.   What could be going on?
>>
>> Thanks,
>>
>> --
>> Arlene Sondergaard
>> CVO Sediment Lab
>> 1300 SE Cardinal Court, Suite 100
>> Vancouver, WA  98683
>> 360-993-8943
>> asonder@usgs.gov
>>
>
>
>
> --
> roger w
>  From Proverbs:
> Under three things the earth trembles, under four it cannot bear up: a
> servant who becomes king ...
> ----------------------------------------------------------
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> View the growing list of video work at:
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>
> http://www.prpeak.com/articles/2010/11/29/multimedia/video/doc4c62e5f80d228504902172.txt
>

--
Arlene Sondergaard
CVO Sediment Lab
1300 SE Cardinal Court, Suite 100
Vancouver, WA  98683
360-993-8943
asonder@usgs.gov