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  #1 (permalink)  
Old 12 Dec 2004, 09:26 pm
Vadim
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Default 1995 odyssey thermostat

Does anyone know where thermostat is localted on Honday Odyssey 1995? Is it
difficult to change it?
Thanks,
Vadim.


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  #2 (permalink)  
Old 13 Dec 2004, 08:48 am
E. Meyer
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Default Re: 1995 odyssey thermostat

On 12/12/04 9:26 PM, in article 6q8vd.10213$i3.487277@weber.videotron.net,
"Vadim" <vakor@hotmail.com> wrote:

> Does anyone know where thermostat is localted on Honday Odyssey 1995? Is it
> difficult to change it?
> Thanks,
> Vadim.
>
>

Follow the big hose from the top of the radiator back to the engine. It
will be at the engine end of it. Its not harder to change than on most
other cars.

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  #3 (permalink)  
Old 13 Dec 2004, 10:46 am
TeGGer®
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Default Re: 1995 odyssey thermostat

"E. Meyer" <e52.meyer@ieee.org> floridly penned in
news:BDE307E7.B4A97%e52.meyer@ieee.org:

> On 12/12/04 9:26 PM, in article
> 6q8vd.10213$i3.487277@weber.videotron.net, "Vadim" <vakor@hotmail.com>
> wrote:
>
>> Does anyone know where thermostat is localted on Honday Odyssey 1995?
>> Is it difficult to change it?
>> Thanks,
>> Vadim.
>>
>>

> Follow the big hose from the top of the radiator back to the engine.





You mean the hose from the BOTTOM of the rad, no? Most (all?) modern cars
have that setup.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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  #4 (permalink)  
Old 13 Dec 2004, 11:10 am
Michael Pardee
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Posts: n/a
Default Re: 1995 odyssey thermostat

"TeGGer®" <teggeratistopdotcom@changetheobvious.invalid> wrote in message
news:Xns95BE77F97462Cteggeratistop@207.14.113.17.. .
> "E. Meyer" <e52.meyer@ieee.org> floridly penned in
> news:BDE307E7.B4A97%e52.meyer@ieee.org:
>
>> On 12/12/04 9:26 PM, in article
>> 6q8vd.10213$i3.487277@weber.videotron.net, "Vadim" <vakor@hotmail.com>
>> wrote:
>>
>>> Does anyone know where thermostat is localted on Honday Odyssey 1995?
>>> Is it difficult to change it?
>>> Thanks,
>>> Vadim.
>>>
>>>

>> Follow the big hose from the top of the radiator back to the engine.

>
>
>
>
> You mean the hose from the BOTTOM of the rad, no? Most (all?) modern cars
> have that setup.
>
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/



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  #5 (permalink)  
Old 13 Dec 2004, 11:12 am
Michael Pardee
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Posts: n/a
Default Re: 1995 odyssey thermostat

"TeGGer®" <teggeratistopdotcom@changetheobvious.invalid> wrote in message
news:Xns95BE77F97462Cteggeratistop@207.14.113.17.. .
> "E. Meyer" <e52.meyer@ieee.org> floridly penned in
> news:BDE307E7.B4A97%e52.meyer@ieee.org:
>
>> On 12/12/04 9:26 PM, in article
>> 6q8vd.10213$i3.487277@weber.videotron.net, "Vadim" <vakor@hotmail.com>
>> wrote:
>>
>>> Does anyone know where thermostat is localted on Honday Odyssey 1995?
>>> Is it difficult to change it?
>>> Thanks,
>>> Vadim.
>>>
>>>

>> Follow the big hose from the top of the radiator back to the engine.

>
>
>
>
> You mean the hose from the BOTTOM of the rad, no? Most (all?) modern cars
> have that setup.
>
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

(Oops - think I sent a blank response because my fingers are stupid.)

I don't understand why that is. In the days of yore they were attached to
the head, on the upper radiator hose, so the temperature of the head would
be regulated. Has something changed?

Mike


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  #6 (permalink)  
Old 13 Dec 2004, 12:52 pm
E. Meyer
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Posts: n/a
Default Re: 1995 odyssey thermostat

On 12/13/04 10:46 AM, in article
Xns95BE77F97462Cteggeratistop@207.14.113.17, "TeGGer®"
<teggeratistopdotcom@changetheobvious.invalid> wrote:

> "E. Meyer" <e52.meyer@ieee.org> floridly penned in
> news:BDE307E7.B4A97%e52.meyer@ieee.org:
>
>> On 12/12/04 9:26 PM, in article
>> 6q8vd.10213$i3.487277@weber.videotron.net, "Vadim" <vakor@hotmail.com>
>> wrote:
>>
>>> Does anyone know where thermostat is localted on Honday Odyssey 1995?
>>> Is it difficult to change it?
>>> Thanks,
>>> Vadim.
>>>
>>>

>> Follow the big hose from the top of the radiator back to the engine.

>
>
>
>
> You mean the hose from the BOTTOM of the rad, no? Most (all?) modern cars
> have that setup.
>


You may be right. I sold the Odyssey to my daughter over 3 years ago, so
its been awhile since I've had my head in that engine. Both radiator hoses
connect on the top of the engine. The thermostat is in the one closer to
the firewall.

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  #7 (permalink)  
Old 13 Dec 2004, 08:32 pm
TeGGer®
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Posts: n/a
Default Re: 1995 odyssey thermostat

"Michael Pardee" <michaeltnull@cybertrails.com> floridly penned in
news:9OKdneYXb4UfUCDcRVn-3A@sedona.net:

> "TeGGer®" <teggeratistopdotcom@changetheobvious.invalid> wrote in
> message news:Xns95BE77F97462Cteggeratistop@207.14.113.17.. .
>> "E. Meyer" <e52.meyer@ieee.org> floridly penned in
>> news:BDE307E7.B4A97%e52.meyer@ieee.org:
>>
>>> On 12/12/04 9:26 PM, in article
>>> 6q8vd.10213$i3.487277@weber.videotron.net, "Vadim"
>>> <vakor@hotmail.com> wrote:
>>>
>>>> Does anyone know where thermostat is localted on Honday Odyssey
>>>> 1995?
>>>> Is it difficult to change it?
>>>> Thanks,
>>>> Vadim.
>>>>
>>>>
>>> Follow the big hose from the top of the radiator back to the engine.

>>
>>
>>
>>
>> You mean the hose from the BOTTOM of the rad, no? Most (all?) modern
>> cars have that setup.
>>
>>
>> --
>> TeGGeR®
>>
>> The Unofficial Honda/Acura FAQ
>> www.tegger.com/hondafaq/

> (Oops - think I sent a blank response because my fingers are stupid.)
>
> I don't understand why that is. In the days of yore they were attached
> to the head, on the upper radiator hose, so the temperature of the
> head would be regulated. Has something changed?
>



Yes. Two things in particular:

1) It used to be that the thermostat opened to send hot water TO the rad
FROM the head.
That was when the thermostat was in the TOP hose.
Now, the thermostat opens to admit cooled water FROM the rad back TO the
head.
This is when the thermostat is in the BOTTOM hose.

2) Many rad caps no longer hold pressure until the fluid begins to boil.
You'll notice that your rad hoses may be squishy and not firm when the
engine is warm.

These two changes apparently mean greater cooling system efficiency,
necessary with modern reduced capacities.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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  #8 (permalink)  
Old 13 Dec 2004, 09:20 pm
Michael Pardee
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Posts: n/a
Default Re: 1995 odyssey thermostat


"TeGGer®" <teggeratistopdotcom@changetheobvious.invalid> wrote in message
news:Xns95BEDB49B2EF4teggeratistop@207.14.113.17.. .
> "Michael Pardee" <michaeltnull@cybertrails.com> floridly penned in
>> I don't understand why that is. In the days of yore they were attached
>> to the head, on the upper radiator hose, so the temperature of the
>> head would be regulated. Has something changed?
>>

>
>
> Yes. Two things in particular:
>
> 1) It used to be that the thermostat opened to send hot water TO the rad
> FROM the head.
> That was when the thermostat was in the TOP hose.
> Now, the thermostat opens to admit cooled water FROM the rad back TO the
> head.
> This is when the thermostat is in the BOTTOM hose.
>
> 2) Many rad caps no longer hold pressure until the fluid begins to boil.
> You'll notice that your rad hoses may be squishy and not firm when the
> engine is warm.
>
> These two changes apparently mean greater cooling system efficiency,
> necessary with modern reduced capacities.
>
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/


1) makes sense when I think about it. 2) escapes my tired brain, but I'll
take your word.

How does the bottom-mounted thermostat sense the temperature? Does the pump
feed a loop that brings coolant from the head to the thermostat?

Mike


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  #9 (permalink)  
Old 14 Dec 2004, 07:48 am
TeGGer®
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Posts: n/a
Default Re: 1995 odyssey thermostat

"Michael Pardee" <michaeltnull@cybertrails.com> floridly penned in
news5adnWOWyKmWwSPcRVn-sw@sedona.net:


> 1) makes sense when I think about it. 2) escapes my tired brain, but
> I'll take your word.




You don't have to. Next time your car is full warm, go squeeze the rad
hoses. Sometimes they'll be firm, sometimes they'll be soft as though the
engine was cool.


>
> How does the bottom-mounted thermostat sense the temperature? Does the
> pump feed a loop that brings coolant from the head to the thermostat?
>



The thermostat is still top-mounted, at the UPPER end of the bottom hose,
since it needs to be where the heat is (heat rises).


With the old system where it's in the top hose, the sequence is this:
1) Water in block and head heats up
2) Thermostat opens and hot water flows to the rad
3) Water cools in the rad and is then pushed back into the block by the
water pump from the lower hose
4) As the cool return water comes through the block back to the thermostat
again, the thermostat closes, limiting water flow until block heats up
again.

With the new system where it's mounted in the bottom hose:
1) Water in the block heats up, with the heat backing up to where the
thermostat is
2) Thermostat opens, allowing cool water from the lower rad hose to be sent
to the water pump and pushed back into the block
3) Cool rad water makes thermostat close up again and water flow stops
4) Sequence repeats from Step #1.

Apparently this second system is better suited to cooling systems with
limited capacity. The limited capacity seems to be a response to weight-
cutting in order to help comply with government CAFE rules.



--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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