 | Home > Puma (Tdci) > Heater on cold but blowing out warm air |
 
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| BenB8man Member Since: 22 Mar 2017 Location: Norfolk Posts: 429   
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Probably your heater control valve leaking a little, letting some of the hot coolant into you heater matrix when the valve should be making. Common issue. Do a search
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13th Aug 2018 5:15pm |
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| johnnyd Member Since: 13 Apr 2013 Location: Chippenham Posts: 1006 
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I had just topped up the coolant level to possibly above the max line........is there a connection there?
JD 2008 TDCi 2.4 XS CSW |
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13th Aug 2018 5:19pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720 
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It wont be the slight overfill in the coolant. It'll be the control valve failed. Get someone to operate the hot/cold control and see if the cable operates the valve under the bonnet. If it doesn't then your cable has come off the back of the rotary control on the dash, if it does then your heater valve has had it.
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13th Aug 2018 11:41pm |
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| pannawonica Member Since: 21 Nov 2010 Location: Clackline Western Australia Posts: 568 
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My heater did the same thing last week! However it was the control cable that had slipped so on cold it was still a bit open!
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14th Aug 2018 3:28am |
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| HardCharger Member Since: 03 Mar 2013 Location: Manila Posts: 740  
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Check to where the control cable links to the valve. Sometimes its not down fully coming from open. Simply push it down and all will be well.
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14th Aug 2018 4:04am |
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| Grenadier Member Since: 23 Jul 2014 Location: The foot of Mont Blanc... Posts: 5829  
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Zsd is a far more knowledgable member than me, but it's not necessarily failed if the cable is still attached. Mine was stuck, so a little bit of lube/WD40 on the various moving parts, plus squirted down the engine bay end of the cable and pulled in/out a few times, now works fine! I promise that's the only long thing I was lubing and pulling back and forth  Monsieur Le Grenadier
I've not been everywhere, but it's on my list..... 2011 Puma 110DC - Corris Grey |
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14th Aug 2018 5:58am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17441
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As ZSD says either the cable operating the heater valve has become maladjusted, most likely at the valve end (but the possibility of breakage at the knob end (if I'm allowed to say "knob end" on a family forum) cannot be totally ruled out), or else the heater valve has broken up internally.
Puma heater valves are notorious for being about as cheap and tacky as it is possibly to get but cost a fortune from JLR. Elsewhere on the forum a link was recently posted to the same valve (now also inflicted upon Citroen owners and a few others) at a much more reasonable price. |
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14th Aug 2018 8:12am |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6300  
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my understanding is that replacement heater valves kept defenders being built for the last few years. building them was at a loss but replacement heater valves more than covered the losses.
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14th Aug 2018 8:35am |
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| johnnyd Member Since: 13 Apr 2013 Location: Chippenham Posts: 1006
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lol 2008 TDCi 2.4 XS CSW
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14th Aug 2018 8:38am |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6300
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good luck with the fix.
I just had to push my valve a little further manually as the cable has become mal-adjusted. I suspect what I'll need to do is get the outer sheath and unclip it near the valve and move it towards the valve and then clip it back on again (I'm hoping that's all it'll need) ? |
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14th Aug 2018 8:40am |
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| johnnyd Member Since: 13 Apr 2013 Location: Chippenham Posts: 1006
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OK just had a quick look, the lever operates the valve OK and fully opens (hot) but the valve is reluctant to fully close again, I can push it to fully closed by hand so there is enough cable to allow the movement, is the valve spring loaded to one of the positions at all, or is it fully dependant on the cable movement, ie if the valve is sticky the cable does not have enough force to fully close the valve. Can the valve be serviced or is it caked up for life ?
JD 2008 TDCi 2.4 XS CSW |
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14th Aug 2018 9:57am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17441
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No spring, totally dependent upon the cable.
No, it cannot be serviced. It is however very satisfying when you stamp on one and then throw it in the bin (take it off the metal bracket first or you'll hurt your foot)! |
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14th Aug 2018 11:08am |
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| johnnyd Member Since: 13 Apr 2013 Location: Chippenham Posts: 1006
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I had a feeling that would be the case......I'll leave it for now I think given autumn is approaching, I'll do a bit of jiggling to see if I can uncrud it at all......
Thanks all 2008 TDCi 2.4 XS CSW |
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14th Aug 2018 11:31am |
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| jamaica Member Since: 13 Aug 2016 Location: Bahia Blanca Posts: 6 
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Hi there!!I've got the same problem with my Puma heating. The system would not shut and warm air keeps heating the cabin.
I've bought the valve and change it today, before that I have checked behind the inside front panel if the cable was ok and still attached to the control dial. After changing the valve for a new one LR original, can't tell my anger when the thing was still the same as before, hot air keeps flowing inside the cabin but here is the surprise: On the right hand vents the air is cool like it should be when it is ouside air intake selected; but on the left hand vents the air is hot like if the valve didin't have close!!!! What is happening? Why on one side air intake temp is ok and on the other is hot!!??? I would appreciate if someone who had the same experience share the solution!! Thanks!!! |
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8th Oct 2018 11:33pm |
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