It happened again this morning.  I'm sitting at a stoplight with the van
just idling.  Then I hear a "thunk."  Nothing changes in
the performance or operation of my van.  But every few days I hear it
again.  Thunk.

The sound seems to be coming from the
back.

What suggestions do you have for investigating this
mystery sound?
Or have you BTDT and have a suggestion for what it is?

--
     Michael Rasmussen

http://www.jamhome.us/
 Be Appropriate && Follow Your Curiosity