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G

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Discussion Starter · #1 ·
Re: Question about cooling system, but not a Camry (This is a stumper)


> If the car is left to sit and run, the gauge moves up and there is PLENTY
> of heat. But, as I said, when the car starts moving, the temp goes low.
> AFAIK, the thermostat is installed properly. Before I go through the
> trouble of removing it again, can anyone think of something I overlooked?


Is the temperature REALLY getting low or is it just the temperature
GUAGE?

There may be a problem with the guage?

Mark
 
G

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Discussion Starter · #2 ·
Re: Question about cooling system, but not a Camry (This is a stumper)

On Tue, 19 Dec 2006 19:54:42 -0800, Mark wrote:

>
>
>> If the car is left to sit and run, the gauge moves up and there is
>> PLENTY of heat. But, as I said, when the car starts moving, the temp
>> goes low. AFAIK, the thermostat is installed properly. Before I go
>> through the trouble of removing it again, can anyone think of something
>> I overlooked?

>
> Is the temperature REALLY getting low or is it just the temperature GUAGE?
>
> There may be a problem with the guage?
>
> Mark



Nope, guage checks OK. If the car idles, the radiator get hot, and the
guage goes UP. Drive the car, the radiator cools, and the guage goes DOWN.

Everything electrical (fan, temp guage) seems to check OK. The fan is not
coming on randomly, etc. It just doesn't get warm enough!
 
G

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Discussion Starter · #3 ·
Re: Question about cooling system, but not a Camry (This is a stumper)

try a hotter thermastat 185-195

Hachiroku ��ロク wrote:
>>> If the car is left to sit and run, the gauge moves up and there is
>>> PLENTY of heat. But, as I said, when the car starts moving, the temp

>[quoted text clipped - 7 lines]
>>
>> Mark

>
>Nope, guage checks OK. If the car idles, the radiator get hot, and the
>guage goes UP. Drive the car, the radiator cools, and the guage goes DOWN.
>
>Everything electrical (fan, temp guage) seems to check OK. The fan is not
>coming on randomly, etc. It just doesn't get warm enough!
 
G

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Discussion Starter · #4 ·
Re: Question about cooling system, but not a Camry (This is a stumper)

On Wed, 20 Dec 2006 06:05:04 +0000, wreck wrote:

> try a hotter thermastat 185-195


It has a 195 in it...


>
> Hachiroku ��ロク wrote:
>>>> If the car is left to sit and run, the gauge moves up and there is
>>>> PLENTY of heat. But, as I said, when the car starts moving, the temp

>>[quoted text clipped - 7 lines]
>>>
>>> Mark

>>
>>Nope, guage checks OK. If the car idles, the radiator get hot, and the
>>guage goes UP. Drive the car, the radiator cools, and the guage goes DOWN.
>>
>>Everything electrical (fan, temp guage) seems to check OK. The fan is not
>>coming on randomly, etc. It just doesn't get warm enough!
 
G

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Discussion Starter · #5 ·
Re: Question about cooling system, but not a Camry (This is a stumper)

--
The WWW is like a herd of performing elephants with diarrhea. Massive,
awe-inspiring, entertaining, difficult to redirect.

Anon
<Hachiroku $B%O%A%m%/ (B <[email protected]>)> wrote in message
news:[email protected]
> On Tue, 19 Dec 2006 19:54:42 -0800, Mark wrote:
>
> >
> >
> >> If the car is left to sit and run, the gauge moves up and there is
> >> PLENTY of heat. But, as I said, when the car starts moving, the temp
> >> goes low. AFAIK, the thermostat is installed properly. Before I go
> >> through the trouble of removing it again, can anyone think of something
> >> I overlooked?

> >
> > Is the temperature REALLY getting low or is it just the temperature

GUAGE?
> >
> > There may be a problem with the guage?
> >
> > Mark

>
>
> Nope, guage checks OK. If the car idles, the radiator get hot, and the
> guage goes UP. Drive the car, the radiator cools, and the guage goes DOWN.
>
> Everything electrical (fan, temp guage) seems to check OK. The fan is not
> coming on randomly, etc. It just doesn't get warm enough!


It sounds like the new thermostat is sticking intermittantly. I've seen new
t/stats do this. Suffice to say, if your cooling system is normal in all
other respects (not losing coolant, boiling, gauge reading erratically or
fan problems), the t/stat is a good bet..

Jason
 
G

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Discussion Starter · #6 ·
Re: Question about cooling system, but not a Camry (This is a stumper)

Maybe the thermostat is sticking open, or the thermal control opens it
but does not close it. Sitting still the system will get hot but the
airflow through the radiator when the car is moving pulls the
temperature down. Also, if there is no force to pull the thermostat
closed then the water pump might also generate enough pressure to push
the thermostat valve open at normal operating RPM. Standard check of a
thermostat is to see what happens in a pan of boiling water on the
stove. Be careful, good luck. ---Charlie.

Mark wrote:
>
>> If the car is left to sit and run, the gauge moves up and there is PLENTY
>> of heat. But, as I said, when the car starts moving, the temp goes low.
>> AFAIK, the thermostat is installed properly. Before I go through the
>> trouble of removing it again, can anyone think of something I overlooked?

>
> Is the temperature REALLY getting low or is it just the temperature
> GUAGE?
>
> There may be a problem with the guage?
>
> Mark
>
 
G

·
Discussion Starter · #7 ·
Re: Question about cooling system, but not a Camry (This is a stumper)

On Wed, 20 Dec 2006 11:47:10 -0600, Charlie wrote:

> Maybe the thermostat is sticking open, or the thermal control opens it
> but does not close it. Sitting still the system will get hot but the
> airflow through the radiator when the car is moving pulls the temperature
> down. Also, if there is no force to pull the thermostat closed then the
> water pump might also generate enough pressure to push the thermostat
> valve open at normal operating RPM. Standard check of a thermostat is to
> see what happens in a pan of boiling water on the stove. Be careful,
> good luck. ---Charlie.


I thought of that, too...
I might try this tomorrow when it's warmer out.


>
> Mark wrote:
>>
>>> If the car is left to sit and run, the gauge moves up and there is
>>> PLENTY of heat. But, as I said, when the car starts moving, the temp
>>> goes low. AFAIK, the thermostat is installed properly. Before I go
>>> through the trouble of removing it again, can anyone think of something
>>> I overlooked?

>>
>> Is the temperature REALLY getting low or is it just the temperature
>> GUAGE?
>>
>> There may be a problem with the guage?
>>
>> Mark
>>
 
G

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Discussion Starter · #8 ·
Re: Question about cooling system, but not a Camry (This is a stumper)

On Wed, 20 Dec 2006 06:05:04 +0000, wreck wrote:

> try a hotter thermastat 185-195



How about a piece of old plywood panelling blocking off about 3/4 of the
radiator?
That worked. It only took 17 minutes for the car to get to operating temp!

Wish I could find a real solution, though...


>
> Hachiroku ��ロク wrote:
>>>> If the car is left to sit and run, the gauge moves up and there is
>>>> PLENTY of heat. But, as I said, when the car starts moving, the temp

>>[quoted text clipped - 7 lines]
>>>
>>> Mark

>>
>>Nope, guage checks OK. If the car idles, the radiator get hot, and the
>>guage goes UP. Drive the car, the radiator cools, and the guage goes
>>DOWN.
>>
>>Everything electrical (fan, temp guage) seems to check OK. The fan is not
>>coming on randomly, etc. It just doesn't get warm enough!
 
G

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Discussion Starter · #9 ·
Re: Question about cooling system, but not a Camry (This is astumper)

A shut cold thermostat shuts off water to radiator, it is then a closed
internal loop inside the motor. The issue is your thermostat. did you
check its operation in a pan on the stove for opening and closing temp,
you need a thermometer.
 
G

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Discussion Starter · #10 ·
Re: Question about cooling system, but not a Camry (This is astumper)

Your thermostat opens, but what you dont know is what exact temp does it
close at, it is in a narrow temp range. An aftermarket thermostat I got
once was defective, the gasket never sealed the thermostat and always
allowed water to bypass, for many years I had a car that took to long to
heat up. For thermostats a genuine Toy unit is always best.
 
G

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Discussion Starter · #11 ·
Re: Question about cooling system, but not a Camry (This is a stumper)

m Ransley wrote:
> Your thermostat opens, but what you dont know is what exact temp does it
> close at, it is in a narrow temp range. An aftermarket thermostat I got
> once was defective, the gasket never sealed the thermostat and always
> allowed water to bypass, for many years I had a car that took to long to
> heat up. For thermostats a genuine Toy unit is always best.



But this is an 89 Mazda 626... hmm, genuine Mazda thermostats from the
dealership?
 
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