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 Post subject: Re: heater hose inlet blocked deliberately?
PostPosted: Sun Jan 31, 2021 7:33 pm 
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Bertoknee wrote:
kennygwood wrote:
:shock:

It's not a wierd thermostat is it?


ohh..yeah..good point ... i guess it could be - it seemed to be totally bonded to the metal .. I gave it a little tug but it didnt seem to want to move or come out of there

VIN is .. TDBNLJWT31A13945


Is there a character missing? Should be 17.


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 Post subject: Re: heater hose inlet blocked deliberately?
PostPosted: Sun Jan 31, 2021 7:40 pm 
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Bertoknee wrote:
Colster wrote:
Could you post your VIN and I'll have a look for you.

Similar item on Europe spec. is 922001HP0C so obviously some kind of thermostat.


is that the part no. for the whole heater matrix? ...or the little unknown part in the end that might be a t'stat?

edit - Amayama lists that part no. as an expansion valve for the aircon system .... so something not right with the numbers there...


Apologies, part quoted is fitted to aircon radiator.


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 Post subject: Re: heater hose inlet blocked deliberately?
PostPosted: Sun Jan 31, 2021 9:46 pm 
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Model: T31 2.5 CVT 4wd
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Colster wrote:
Bertoknee wrote:
kennygwood wrote:
:shock:

It's not a wierd thermostat is it?


ohh..yeah..good point ... i guess it could be - it seemed to be totally bonded to the metal .. I gave it a little tug but it didnt seem to want to move or come out of there

VIN is .. TDBNLJWT31A13945


Is there a character missing? Should be 17.


Sadly no ... only 16 digits here ... PH built, so nothing is quite like the rest of the world...


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 Post subject: Re: heater hose inlet blocked deliberately?
PostPosted: Wed Feb 03, 2021 8:48 am 
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so ... after much googling it turns out that these are indeed bungs/plugs used to prevent coolant flow through the heater matrix in the cabin. It seems they are often fitted by dealers in PH to effectively disable any vehicle heater. I can see why, because its normally damn hot here and having a red hot heater core in the cabin would be crazy. However, for the last month or so ..it has been actually cold - esp. after dark ... climate change!!

Anyway... I removed both hoses from the barbs and prised out the 2 plugs ...

anyway...both plugs removed ..and coolant now flowing successfully thro the matrix - cabin heat at last.


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 Post subject: Re: heater hose inlet blocked deliberately?
PostPosted: Wed Feb 03, 2021 1:38 pm 
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No wonder they're not in the parts catalogue!


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 Post subject: Re: heater hose inlet blocked deliberately?
PostPosted: Thu Feb 04, 2021 8:49 pm 
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To maximize the aircon. Maybe install a turn valve to close the flow when heat not needed. Many other makes, like Hondas with manual air cons, had a valve driven with steel cable. It closed the flow when turned the temp knob to cold.

And reopen the valve when heat is needed.

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 Post subject: Re: heater hose inlet blocked deliberately?
PostPosted: Fri Feb 05, 2021 2:01 pm 
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we think the same... 'cos thats exactly what I am looking at doing! - I'm researching suitable 1/4 turn valves right now.


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 Post subject: Re: heater hose inlet blocked deliberately?
PostPosted: Fri Feb 05, 2021 2:23 pm 
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I think a regulal ball valve for hot water is ok. But the hole in the ball must be near 18-20mm, because otherwise the valve restricts the coolant flow and the result is like before.
So my advise is to buy a bigger valve and with the couplers reduce the inlet/outlet to correct size.

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 Post subject: Re: heater hose inlet blocked deliberately?
PostPosted: Fri Feb 05, 2021 2:30 pm 
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Strange when you think about it, but that's what at one time would have been regarded as normal practice. My old Ford Anglia from decades ago had a tap on the engine that you turned on in winter and turned off in summer to stop hot water going round the heater matrix.


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 Post subject: Re: heater hose inlet blocked deliberately?
PostPosted: Fri Feb 05, 2021 4:17 pm 
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Location: Estonia
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Honda valve, needs a steel cable and brackets to operate it.

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