Al, if there is too much air in the system (e.g., incorrectly bled, but
everything else ok), coolant gets pushed into overflow tank.  However, there
is not enough contraction of the liquid in the cooling system proper to suck
the fluid from the overflow tank back into the expansion tank.  My local
shop had a new tech work on my van this week, and he didn't get enough air
out of the system.  I have same problem.

John Lauterbach
Macon, GA
'84 DL
----- Original Message -----
From: "Al Ferguson" <al_ferguson@USA.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, March 24, 2001 9:21 PM
Subject: Cooling question

I have an 89 Carat and a cooling question...
It seems to run a bit on the hot side lately - almost in the hot zone.
Yesterday I was driving it and the water flasher light started blinking
indicating that the pressured reservoir was low. I stopped to check the
non-pressured reservoir (under the Lic. plate) and noted it was full and the
coolant in there was cold but indeed the pressured reservoir was low? What I
am wondering is why the pressured reservoir is not sucking the fluid out of
the non-pressured reservoir? I have replaced the radiator pressured
reservoir
cap with two different new units thinking this was the problem - but the
system still does not sucking the antifreeze/water from the non-pressured
reservoir to fill the system as needed.
Any Ideas what is happening?

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