[DeTomaso] Third fan / cooling problems at idle.

[Ed Pike]

Chris:

Thanks. That is good insight for my issue which is more piece of mind than a
real concern. I probably over react when the temp gage goes up just because
it's a Pantera. My thoughts were to up grade the two original(?) fans on my
74 or go to a third. I am leaning toward the third fan. I have to sit still
for a good 15 to 20 min for the temp to go up. Thanks again.


Thanks,
Ed
Ed....-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Christopher Kimball
Sent: Monday, July 21, 2008 1:14 PM
To: Kjetil Finne; erpike at cs.com; detomaso at realbig.com
Subject: Re: [DeTomaso] Third fan / cooling problems at idle.


My guess would be the amount of air curculation being forced through the
radiator at higher speeds would more than compensate for the higher engine
heat, plus the coolant would be pumped faster through the engine, too.
 
I had replace all my hoses and cooling tubes before replacing the radiator
and adding the fan, and it still overheated at idle, but never while
traveling faster than about 40.
 
The increased flow solution would relate to the new radiator, which, as I
mentioned, was added at the same time as the fan.  I guess I could
disconnect the third fan to see if only the new radiator solved the problem.
I'll probably get to that after I replace the speedometer calbe, fix the
cruise control replace the bushings, replace the left axle, rebuild the
motor and upgrade the fuse box...
 
Chris
#3846> Date: Mon, 21 Jul 2008 18:58:35 +0200> From: kjetfinn at online.no> To:
ERPIKE at cs.com; detomaso at realbig.com> Subject: Re: [DeTomaso] Third fan /
cooling problems at idle.> > What I have found is that if you have cooling
problems at idle it is > most likely caused by insufficient coolant
circulation, not by not > having enough air over the radiator.> The heat
generated by the engine should be less at idle than at higher > speeds. (I
guess?)> > Kjetil> > ERPIKE at cs.com wrote:> > Chris:> > I noticed you have 3
fans. Did the 3rd fan help with cooling when you have to sit and ilde alot?
> >> > Ed...> >> > Christopher Kimball <chrisvkimball at msn.com> wrote:> >> >
> >> What I did was to tap into the wires at each fan motor (I have
three--much to Mad Dawg's chagrin!) using the positive and negative leads
right before they went into the fan motors and ran the thee pairs of wire to
the dash. I drilled three little holes above the headlight switch and
mounted three different colored LEDs (which I bought at Radio Shack--made
especially for 12 volts) so now I know exactly when each fan is operating.>
>>> >> The LEDs must be hooked up correctly with the positive side to the
positive wire and negative to negative.> >>> >> Chris> >>> >> #3846> >>> >>
> >>> From: MikeLDrew at aol.com> >>> Date: Sun, 20 Jul 2008 00:36:38 -0400>
>>> To: adin at frontier.net; detomaso at realbig.com> >>> Subject: Re: [DeTomaso]
indicator light> >>>> >>>> >>> In a message dated 7/19/08 17 37 44,
adin at frontier.net writes:> >>>> >>>> >>> > >>>> I need to have a little
light to let me know when the cooling fans > >>>> come on (ford, but not
pantera) . . . it seems one could just take 12v > >>>> off the fan to a
light. It also seems this is a fire waiting to > >>>> happen - do I need to
take the power off the relay???> >>>>> >>>> Help please . . .> >>>>> >>>>
electronically challenged I remain,> >>>>> >>>> > >>> Dave,> >>>> >>> De
Tomaso was way ahead of you--there is a fan indicator light sitting right >
>>> there at the bottom of your speedometer!> >>>> >>> 

That light is amber in color, and moron Lincoln Mercury customers
interpreted > >>> that as a WARNING light and this drew complaints. So after
early 1972, it > >>> was left unconnected.> >>>> >>> It is a very simple
matter to string a wire from the output side of your #2 > >>> fan relay back
to this light. Voila! :>)> >>>> >>> Actually, if you string it from the
output side, where 12V flows to the fan > >>> motor, then the spinning fan
might cause the light to glow when it is spinning, > >>> but not powered.
Come to think of it, it's probably better to string the > >>> wire from the
input to the fan relay, where the relay gets its "turn on the fan" > >>>
signal from the thermoswitch in the radiator.> >>>> >>> Mike> >>>> >>>> >>>
**************> >>> Get fantasy football with free live scoring. Sign up for
> >>> FanHouse Fantasy Football today.> >>> > >>>
(http://www.fanhouse.com/fantasyaffair?ncid=aolspr00050000000020)> >>>
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