Re: 87 deg C thermostat in TD
From: Joseph Ashment (wyofisher@earthlink.net)
Date: Fri 01 Nov 2002 - 02:12:45 EST
I don't know that my temp sender and gauge are accurate. I do see the
difference on the temp gauge with the different thermostats, and I know that
my fans aren't always on. I never really worried about the gauge enough to
make a temp chart. Not a bad idea though.
Joe
----- Original Message -----
From: <firepiston@juno.com>
To: <wyofisher@earthlink.net>
Cc: <peugeots@vtlink.net>; <peugeot-L@yahoogroups.com>
Sent: Wednesday, October 30, 2002 8:52 PM
Subject: Re: 87 deg C thermostat in TD
> Joe,
> How do you know your temp gauge and temp sender is accurate. The only
> way to know is to calibrate the sender and temp gauge using known
> references.
> I did that on my 82 604 TD. Took the sender out and put in boiling water,
> measured water temp and corresponding resistance of sender as the water
> cooled and a table was generated. Re-installed sender and had SPDT
> switch to switch sender to the temp gauge or the DVM, where resistance
> was measured and the temp looked up in the table.
> Steve
>
> On Wed, 30 Oct 2002 20:31:52 -0800 "Joseph Ashment"
> <wyofisher@earthlink.net> writes:
> > You're right, I do go for a lower baseline. My particular car has
> > always
> > been very heat sensative. In the summer, if I start out with a 72
> > degree
> > thermostat my car runs with the temp in the middle of the guage,
> > just warm
> > of middle with the A/C on. With an 80 degree, the car just heats up
> > and
> > turns on the fans. I helped the situation greatly with a recore job
> > on my
> > radiator with a more eficiant core than the factory. I just have to
> > adjust
> > for the design flaw of Peugeot's with the barely adequate cooling
> > system.
> > So I only run the warm 80 degree in the winter. I am continually
> > surprised
> > at how some of our list members can drive their diesels so hard and
> > hot and
> > not crack the heads and overheat the engines.
> > Joe
> >
> >
> >
> > > The thermostat has nothing to do with overheating once it is open.
> > It
> > > simply keeps the coolant temperature from falling below the
> > thermostat
> > > temperature. If your car overheats with an 87 degree thermostat
> > it would
> > > also overheat with a 75 degree thermostat, except for the
> > exceptional
> > > circumstance of a temporary overload of the system, such as
> > climbing a
> > > short steep hill, where starting the climb with a lower baseline
> > > temperature would allow you a little more time under overload to
> > reach the
> > > top of the hill without overheating.
> > >
> > > Regardless of the thermostat temperature, or even with no
> > thermostat,
> > > overloading the cooling system will cause overheating. The
> > thermostat has
> > > nothing to do with it. But it does hasten warmup, and prevent
> > overcooling
> > > and subsequent loss of efficiency, power, and mileage, and
> > sludging of the
> > oil.
> > >
> >
> >
> >
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