 | Home > Puma (Tdci) > Air conditioning problem |
 
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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 4209   
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If there is no leak, I can't see the condenser being faulty. All it is is a radiator in reality, if it's not leaking there's not much else to go wrong with it. Yes, they corrode and fins fall out, but that would not stop the system working completely. 2007 110 TDCi Station Wagon XS
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14th Aug 2019 2:34pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6298  
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If you're as daft as me the following could be what's going on......
I thought mine wasn't working but what was happening for me was this; The a/c was working find but because the heater valve was stuck open it appeared there was no cooling effect. ie although the rotary dial on dash board was fully to cooling the valve wasn't fully closing due to cable not doing what it should. so pop the bonnet and fully close the flow valve by hand - don't rely on cable doing it via the rotary switch - make sure there's no heating effect and then see if you're getting a/c cooling. hope that makes sense?  |
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14th Aug 2019 2:41pm |
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| Matt110 Member Since: 29 Jun 2014 Location: UK Posts: 683
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I'm no expert but from my experience with a car system with the same issue, theres a number of things it could be.
Why it went wrong originally: 1. Pressure low through natural leakage over time in O-rings in the pipe joints (what mine was) 2. Compressor clutch engaging but not fully (can be adjusted but i never worked out how) 3. Pressure far too high from one of those "AC gas top up bottles" Why it could be wrong now: 1. Overcharged from them putting "a little bit more gas in than the book says as they have really long hoses on this machine"..... that's a good one. That ruined my AC compressor and failed the expansion valve which on my car was a dash out job...... 2. A failed compressor that's not fully compressing with the lobes - they've suggested this one already. 3. Growth on the evapourator which means it barely works and keeps cycling the compressor due to the pressure in the system never being dropped due to the temperature staying low on the low pressure side. Trouble is they're hard to get to to check if they're clean.... 4. The drain line used to work, but now doesn't, and is blocked up with growth, which means the evapourator sits in a massive puddle all the time, freezes the puddle, then is ineffective, and you return to no.3 again. As above i'd be surprised if it's the condenser itself, but it could be the lines to and from it. Honestly that's just the experience i've had myself, but you're best off talking to a very good AC specialist, rather than the local garage who are simply trained to use a machine, (often wrongly) <--- for instance, if the systems been open to the air, you need to leave it on vacuum mode for as long as possible, but a minimum of 8 hours according to the service guidelines for the car I had, to make sure the moisture is removed from the system. Can't imagine someone in KwikFit giving it more than a cup of tea! Not sure, but hopefully gives some thought starters. ^^^ i like Caterhams answer. That one's easy to fix!!!! |
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14th Aug 2019 2:53pm |
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| dgardel Member Since: 30 Nov 2008 Location: Veneto (Heart & Head) Posts: 3586 
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wrong answer... deleted Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition
IID Pro MV License |
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14th Aug 2019 6:58pm |
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| Nicedayforit Member Since: 07 May 2018 Location: Uk Posts: 6 |
Do you know when the cabin air filter was last changed? You could always take the filter out for a short while and see if there is any improvement.
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14th Aug 2019 8:01pm |
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| sweatysock Member Since: 17 Jul 2011 Location: Warwickshire Posts: 283 
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Hi not informed enough to comment on the source of prob but in terms of cost I can add the following.
I had my condenser (LR part) replaced and unit re-gased for £950 last week including labour and VAT....hope this helps if it is necessary Sweatysock ------------- 110 CSW TDCI (Puma) 2007 |
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14th Aug 2019 8:07pm |
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| dgardel Member Since: 30 Nov 2008 Location: Veneto (Heart & Head) Posts: 3586
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Cabin filter ? Into a defender? Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition
IID Pro MV License Last edited by dgardel on 14th Aug 2019 8:08pm. Edited 1 time in total |
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14th Aug 2019 8:07pm |
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| Nicedayforit Member Since: 07 May 2018 Location: Uk Posts: 6 |
It is true I have no idea if there is a cabin filter in a defender but if there isn't that would worry me. A cabin filter obviously cleans the incoming air as best it can before that air gets to the generally damp evaporator. If there is no cabin filter the evaporator tends to act as a filter with any dirt collecting on the evaporator fins which in time become heavily contaminated to such an extent the flow of air through the evaporator is significantly reduced if not stopped all together. Dirty cabin filters are renowned for causing problems with ac systems in vehicles. |
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14th Aug 2019 8:19pm |
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| Matt110 Member Since: 29 Jun 2014 Location: UK Posts: 683
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No cabin filter on a defender unless you've fitted one of those Devon 4x4 foam ones on the wing..... We fitted them then discovered they have such a delta pressure across the element (even though it's only open cell foam) that it ruined the cabin fan performance.
Anyway. The logic behind the point is right even if there's no filter. A clogged up evaporator will also cause the same problem the mould growth would. Stops it heating up on the incoming air and therefore the pump will tick on and off regularly as the pressures constantly high. |
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15th Aug 2019 8:29am |
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| geostrategist Member Since: 25 Apr 2019 Location: UK Posts: 60 
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Matt110
Thanks for that. Where would I find the evaporator? |
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15th Aug 2019 9:25am |
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| geostrategist Member Since: 25 Apr 2019 Location: UK Posts: 60
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And the winner is Matt110 with:
I took it to an air con specialist who serviced it, removed 1040g of gas, and topped it up with the correct amount of 600g (which is clearly marked in the engine bay). I can now drive it and wear a jumper at the same time. Moral: pay cheap: pay twice. |
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15th Aug 2019 12:28pm |
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| Matt110 Member Since: 29 Jun 2014 Location: UK Posts: 683
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Glad you got it sorted - nice easy fix! If a tad inconvenient...
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15th Aug 2019 12:43pm |
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| Magoyo Member Since: 04 Feb 2022 Location: Buenos Aires Posts: 47  
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588 / 5.000
Resultados de traducción I recover this post because I found the answer to what was happening to me. after disassembling the entire board, a very complicated thing that my mechanic did; found the evaporator in a sorry state, full of mud. And that my truck is 2009 with only 60,000 km. And I pray that they can reinstall the board and no new noise appears. I haven't been able to test the AC yet but I guess that was the reason for the malfunction. what was happening was that cold air came out only from one side of the nozzles. I am seriously thinking of installing some kind of cabin filter.
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22nd Jul 2022 2:55pm |
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| Magoyo Member Since: 04 Feb 2022 Location: Buenos Aires Posts: 47
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Click image to enlarge Click image to enlarge |
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22nd Jul 2022 2:55pm |
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