Date:         Thu, 12 Aug 2004 11:54:57 -0700
Reply-To:     gary hradek <hradek@YAHOO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         gary hradek <hradek@YAHOO.COM>
Subject:      an issue of temperature
Content-Type: text/plain; charset=us-ascii

Brian,
     "As for the opening the front core when things
are
> hot,
> it does drop the temp substantially for a bit.  Once
> the sum total coolant reaches a consistant temp it
> climbs back to where it was"
   This suggest to me that your thermostat is
defective or you have something else acting as a
thermostat.   When you bring the two heaters online
you are effectively doubling your radiator size.
This should hold your coolant to the lowest
temperature the thermostat will allow.
      gary
--- "Brian T." <nobleman36@yahoo.com> wrote:

> Hi Gary,
>
> I have the rear core valve at the mid point (just
> replaced the rear core last month).  I will make
> sure
> to bring both cores to full open when I re-bleed the
> system.
>
> As for the opening the front core when things are
> hot,
> it does drop the temp substantially for a bit.  Once
> the sum total coolant reaches a consistant temp it
> climbs back to where it was.
>
> As for highest temp, yes.. it is reached under other
> than flat and level on a hot day.
>
> Thanks again!
> Brian
>
>
> --- gary hradek <hradek@yahoo.com> wrote:
>
> > Brian,
> >      You might be alright with this.   When the
> high
> > speed fan kicks on, if you turn on both heater to
> > max
> > can you bring the temperature down to the lowest
> > normal operating temperature?
> > Do you turn both heaters on when you bleed the
> > system.
> > Your highest temperature should be reached when
> you
> > are going up a hill on a hot day.   Is this the
> > case?
> >        regards gary
> > --- "Brian T." <nobleman36@yahoo.com> wrote:
> >
> > > Brian,
> > >      Be more investigative here?
> > > So what happens when you turn the heater on when
> > the
> > > temperature goes up?   What year as there is a
> big
> > > difference between the two models.   Did you
> > replace
> > > the switch on the radiator yet?   How long does
> it
> > > take at an idle for the low speed fan to kick
> on?
> > > Where are you located.
> > > I disagree with those who claim you don't have a
> > > problem and you are correct to be concerned.
> > >        gary
> > >
> > > ~~~~~~~~~~~~~
> > >
> > > Hi Gary,
> > >
> > >
> > > My van is an 85'.  The low speed fan will kick
> on
> > > after the needle sweep on the temp guage
> surpasses
> > > the
> > > coolant light by say 1\8 inch or so. The high
> > speed
> > > comes on about mid way between the light and the
> > > right
> > > guage stop.  The fan switch is a couple years
> old.
> >
> > > I
> > > replaced it with the radiator in the summer of
> > 2002.
> > >
> > > The interesting thing is that prior to replacing
> > the
> > > radiator my temp guage never really ever passed
> > the
> > > coolant light.  The rediator was replaced due to
> > > leaks, not temp problems.
> > >
> > > This weekend I am going to try and bleed this
> > again
> > > at
> > > my dads shop.  I'll get things good and hot,
> jack
> > > the
> > > nose up 36" and let things settle out, run the
> > idle
> > > up, open the bleeder valve in the back, then
> crack
> > > the
> > > bleeder up from (very carefully with a rag over
> it
> > -
> > > no 2nd/3rd degree burns wanted!)
> > >
> > > I'm hoping that this is nothing but a really
> > > stubborn
> > > bubble.
> > >
> > > Brian




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