In a message dated 97-09-30 10:11:40 EDT, sjones@TETONDATA.COM writes:

<< With the onset of colder weather here in WY, my van has taken on a new
 ailment.  When I first start the engine and the engine is cold, it will
 idle at about 400 RPMs and a high pitch screech will sound from the
 engine compartment.  If I rev the engine, it stops, and it stops if I
 run the engine for 30-40 seconds.  The noise has been getting
 progressively louder as the temperature gets colder.  I haven't been
 able to get to the engine, before the screeching stops, so I can't
 identify where it is coming from.  Is the low idle related to the
 screech or is the screech related to the low idle?

 Any ideas what this problem could be?
  >>

it takes you more than 40 seconds to walk to the back of your van????
anyway, it's prolly a ps or alt belt.

chris