huh.  thats interesting too.
when you pull coolant into the heater core, is it not going to the radiator?
i thought that it would only take some of the coolant, and you would have
coolant going to the radiator and the heater core, ie two heat exchangers
working on the same amount of coolant instead of one (the radiator) ....

----- Original Message -----
From: "Kitzmann" <kitzmann@exis.net>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, May 16, 2001 7:00 AM
Subject: Re: aiding cooling system by turning on heater blower

> Turning on the heater can sometimes help, sometimes hurt depending on the
> car and the temp outside.  The reason I say this is that the heater core
is
> quit small and if not enough air is pulled through it it won't cool the
> coolant passing through it as much as if it went through the radiator.  If
> this is the case then the engine doesn't get a benefit from doing this.
> I've noticed in my van that the temp gauge will go up slightly when I run
> the heater and the blower is not on max.
>
> Dave K.
>