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From: Tegger on 20 Nov 2007 19:03
"Ray O" <rokigawaATtristarassociatesDOTcom> wrote in
news:dPudnWlfb-6e7N_anZ2dnUVZ_oOnnZ2d(a)comcast.com:

>
> "HiC" <brassplyer(a)yahoo.com> wrote in message

>>
>> Maybe there's nothing wrong with it running hotter but it makes me
>> nervous when that needle edges up toward the red end. Or maybe the
>> 195 deg thermo wasn't flowing adequately.
>
> I don't recall the spec for the OEM thermostat, but the replacement
> should be the same. If the 180 degree thermostat works, then stick
> with it.
>


All the Toyota thermostats I've personally seen are rated 78C, which is
172F.

Remember that is an OPENING temp.

A 172F thermostat is fully open at 190F. A 190F thermostat is full-open at
210F, which is way, WAY too high for your car.

I have found in my long and painful life that it is very auspicious to find
out and follow the factory's specifications as closely as possible.

--
Tegger

From: HiC on 20 Nov 2007 20:51
On Nov 20, 2:18 pm, "Danny G." <dan...(a)pacbell.net> wrote:

> > Maybe there's nothing wrong with it running hotter but it makes me
> > nervous when that needle edges up toward the red end. Or maybe the 195
> > deg thermo wasn't flowing adequately.
>
> Glad to hear it was just a bad thermostat.


Well, of course I don't know for a fact that it's bad, I just know it
wasn't behaving the way I'm accustomed to - i.e. keeping the temp
gauge locked in dead center. It may turn out the 195 deg thermo is
fine, maybe even better for gas mileage, I'll experiment to determine.
But I just know the 180deg thermo is keeping things within my comfort
zone for now.


> But do not put off replacing that bottom shroud, belly pan or whatever it is called.
> It may not seem important (or even matter) until one hot day on the open highway
> when you overheat going up some grade.
>
> What happens is at highway speeds the cooling air flow is not forced thru the radiator and
> gets sucked under the car before the radiator without the bottom shroud.


Okay, I appreciate the detailed explanation. I'll have to hunt for
that belly pan, probably tossed it in the attic. Maybe the screw holes
can be reinforced with plastic glued over them or some such.
From: Ray O on 21 Nov 2007 00:30

"HiC" <brassplyer(a)yahoo.com> wrote in message
news:c1b52068-7461-4c07-baad-b7beaf3fdc84(a)i37g2000hsd.googlegroups.com...
> On Nov 20, 2:18 pm, "Danny G." <dan...(a)pacbell.net> wrote:
>
>> > Maybe there's nothing wrong with it running hotter but it makes me
>> > nervous when that needle edges up toward the red end. Or maybe the 195
>> > deg thermo wasn't flowing adequately.
>>
>> Glad to hear it was just a bad thermostat.
>
>
> Well, of course I don't know for a fact that it's bad, I just know it
> wasn't behaving the way I'm accustomed to - i.e. keeping the temp
> gauge locked in dead center. It may turn out the 195 deg thermo is
> fine, maybe even better for gas mileage, I'll experiment to determine.
> But I just know the 180deg thermo is keeping things within my comfort
> zone for now.
>
>
>> But do not put off replacing that bottom shroud, belly pan or whatever it
>> is called.
>> It may not seem important (or even matter) until one hot day on the open
>> highway
>> when you overheat going up some grade.
>>
>> What happens is at highway speeds the cooling air flow is not forced thru
>> the radiator and
>> gets sucked under the car before the radiator without the bottom shroud.
>
>
> Okay, I appreciate the detailed explanation. I'll have to hunt for
> that belly pan, probably tossed it in the attic. Maybe the screw holes
> can be reinforced with plastic glued over them or some such.

Drill new holes in the pan near the original holes and attach with plastic
zip ties.
--

Ray O
(correct punctuation to reply)


From: Tegger on 21 Nov 2007 08:23
HiC <brassplyer(a)yahoo.com> wrote in
news:c1b52068-7461-4c07-baad-b7beaf3fdc84(a)i37g2000hsd.googlegroups.com:

> On Nov 20, 2:18 pm, "Danny G." <dan...(a)pacbell.net> wrote:
>
>> > Maybe there's nothing wrong with it running hotter but it makes me
>> > nervous when that needle edges up toward the red end. Or maybe the
>> > 195 deg thermo wasn't flowing adequately.
>>
>> Glad to hear it was just a bad thermostat.
>
>
> Well, of course I don't know for a fact that it's bad, I just know it
> wasn't behaving the way I'm accustomed to - i.e. keeping the temp
> gauge locked in dead center. It may turn out the 195 deg thermo is
> fine, maybe even better for gas mileage, I'll experiment to determine.
> But I just know the 180deg thermo is keeping things within my comfort
> zone for now.



Chances are excellent the 180 is still too hot. See my other reply.


--
Tegger

From: Danny G. on 21 Nov 2007 13:40

"HiC" <brassplyer(a)yahoo.com> wrote in message news:c1b52068-7461-4c07-baad-b7beaf3fdc84(a)i37g2000hsd.googlegroups.com...
> On Nov 20, 2:18 pm, "Danny G." <dan...(a)pacbell.net> wrote:
>
>> > Maybe there's nothing wrong with it running hotter but it makes me
>> > nervous when that needle edges up toward the red end. Or maybe the 195
>> > deg thermo wasn't flowing adequately.
>>
>> Glad to hear it was just a bad thermostat.
>
>
> Well, of course I don't know for a fact that it's bad, I just know it
> wasn't behaving the way I'm accustomed to - i.e. keeping the temp
> gauge locked in dead center. It may turn out the 195 deg thermo is
> fine, maybe even better for gas mileage, I'll experiment to determine.
> But I just know the 180deg thermo is keeping things within my comfort
> zone for now.
>
>
>> But do not put off replacing that bottom shroud, belly pan or whatever it is called.
>> It may not seem important (or even matter) until one hot day on the open highway
>> when you overheat going up some grade.
>>
>> What happens is at highway speeds the cooling air flow is not forced thru the radiator and
>> gets sucked under the car before the radiator without the bottom shroud.
>
>
> Okay, I appreciate the detailed explanation. I'll have to hunt for
> that belly pan, probably tossed it in the attic. Maybe the screw holes
> can be reinforced with plastic glued over them or some such.


"Fender washers" from the local hardware store should do the trick.


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