In a message dated 98-07-09 09:32:55 EDT, Kohl_Rochelle/r5@fs.fed.us writes:

<<  They said no, they've done many vanagon coolant
 changes and they did it correctly.  They said maybe I need a thermo switch or
 pershaps sensor.  I keep telling them that I had no problems with temp gauge
 until they changed coolant and they say changing coolant can not cause that
 problem.  I don't know what to do as I don't what to put in new parts as my
car
 had no problem when I took it in.  Also I don't understand why they said my
cap
 leaked but I didn't question that.  Can you advise?  They keep telling me
that
 they did it correctly so air in system can't be.
  >>
HI Kohl, as a precation it is necessary to check the coolant reseviour cap by
means of a pressure test. If it's RELEIVING coolant pressure too soon, than it
has to be replaced. You never noticed a leak because when the reseviour cap
would release excess pressure, the coolant goes through that hose connected to
the reseviour cap and then to the bottle behind the license plate. Now yours
was probably at the begining stages of being a minor leak and caught before it
got worse. Your temp gauge is reading normal. The fan shouldn't come on until
the needle in the temp gauge is about two millimeters past the middle. Maybe
the sending unit for the temp gauge had some corrossion on the tip making it
less sensative wich would cause the temp gauge to read a little less and now
that the system has been refurbished, the sending unit is cleaner and more
sensative. Don't worry about it as long as your low speed fan comes on just
past the middle on your gauge. If it would make you feel better and you want
to check for air in the system, then drive just the front end of you van or
whole van up a steep driveway, remove the upper grill, barely open the bleeder
screw ( top left of the radiator as you are looking at it ), only should see a
steady stream of coolant come out. If there is a little air in the system, you
will see it come out first, followed by a steady stream of coolant. I hope
this helps.
 Michael Modl
 87 syncro.