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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 2000

United Kingdom 
Matt110 wrote:
Can also be the heater duct not sealing to the blower unit. I did a thread on how to fix it a while back.


Here is the link to that post https://www.defender2.net/forum/topic75787.html.

To get the cooling working the best it can , I think it’s a combination of sealing the intake duct, else you are drawing warm engine bay air in when trying to cool, plus adding a mod to ensure the valve closes properly..ie a spring. Perhaps even changing the valve every few years to ensure it is sealing properly.

The alternative is changing the valve for a different type, but that , from what we know is available currently, involves a complex bespoke fabrication. https://www.defender2.net/forum/topic54969...ater+valve

It would be great if one of the companies who design improved versions of defender parts, such as Optimill or design & development engineering etc could come up with a robust solution that works as it should. I’m sure owners would pay a reasonable price for a fit and forget solution that does what it says on the tin.
Post #904678 24th May 2021 11:46am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Embarassed Series 1 and 2 as well
Post #904681 24th May 2021 11:48am
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boxoftricks



Member Since: 06 Feb 2019
Location: Home Counties
Posts: 747

United Kingdom 2011 Defender 110 Puma 2.4 USW Zermatt Silver
Siwynne wrote:
Sorry the spring was in a paper sweet bag of springs I bought from a proper old fashioned diy shop in Keswick when the return spring on the carb disappeared when I was there in my old Vw beetle.
I experimented a bit with length to get the amount of force just right.


Have you a part number for that bag od springs Rolling with laughter
Post #904699 24th May 2021 1:10pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2300

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Did the spring mod, works great. The temperature control knob in the cabin feels more positive/free moving/less forced and the valve arm in the engine bay actually moves all the way to the cold side Thumbs Up 10/10 would recommend


Click image to enlarge



Click image to enlarge
 > 110 XS Double Cab
Post #908403 18th Jun 2021 8:48am
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 2000

United Kingdom 
^^^^^^^
I like simple and effective mounting of the spring Hank, I was thinking of fabricating a bracket on the heater bracket to hold the spring horizontally between it and the valve, but your method of using the existing valve mounting screw and the spring bent between it and the valve looks to be sufficiently robust to last.

So what’s the size of the spring hank, and where did you get it ?
Post #908431 18th Jun 2021 12:42pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2300

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Now you're asking. I have one of these type of assorted spring packs in the garage so used an appropriate one

https://www.amazon.co.uk/UCTOP-STORE-Compr...07NY7LTLY/ > 110 XS Double Cab
Post #908441 18th Jun 2021 2:00pm
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Swerni



Member Since: 05 Sep 2021
Location: Surrey
Posts: 13

United Kingdom 2014 Defender 110 Puma 2.2 XS CSW Auto Corris Grey
I was wondering if it was just mine or all defenders.
My 2014 Puma blows hot air or hot air.

It will blow cold with the aircon on, but the heater controls do nothing.
Post #938734 21st Jan 2022 8:42pm
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JPE



Member Since: 19 Nov 2018
Location: South West England
Posts: 335

United Kingdom 2013 Defender 110 Puma 2.2 XS CSW Firenze Red
To answer your question, no I don’t have this problem with my 2013 SW. when set cold it blows cold even when ac turned off. However when set warm the heat varies enormously depending on engine temperature. I think this is normal. Totally rubbish system but I wouldn’t want it any different. Smile
Post #938742 21st Jan 2022 8:58pm
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Swerni



Member Since: 05 Sep 2021
Location: Surrey
Posts: 13

United Kingdom 2014 Defender 110 Puma 2.2 XS CSW Auto Corris Grey
Thanks! give me a job to do this weekend:)
Post #938747 21st Jan 2022 9:05pm
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Swerni



Member Since: 05 Sep 2021
Location: Surrey
Posts: 13

United Kingdom 2014 Defender 110 Puma 2.2 XS CSW Auto Corris Grey
Thank you folks!

Had a play on Sunday and valve was stuck on hot so all the knob was doing was loosening and retightening the cable.
A quick fiddle freed the valve and now I have both hot and cold air.

I love these forums.
Post #939467 25th Jan 2022 5:16pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2300

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
https://www.defender2.net/forum/topic56603.html

Yes. The internals of the heater valve dissolve over time. If you continue to get the same problem replace the valve. I've replaced mine a few times... My advice - buy genuine. > 110 XS Double Cab
Post #939468 25th Jan 2022 5:19pm
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Swerni



Member Since: 05 Sep 2021
Location: Surrey
Posts: 13

United Kingdom 2014 Defender 110 Puma 2.2 XS CSW Auto Corris Grey
will do!

thank you
Post #939470 25th Jan 2022 5:21pm
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