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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 933
Canada 2000 Defender 110 Td5 XS CSW Epsom Green
Td5 Air Conditioning question
I have factory AC in my 110. Runs super cold, however my compressor does not cycle, it is always on. The evaporator eventually freezes up and frost forms on the low pipe in the engine bay. Just working through obvious stuff and will have its pressures and R134 fill checked in the next couple of days.

Question: How free,y should the clutch on the AC compressor be? Mine does not spin freely at all, it is quite a firm and hard turn when the engine is off.

Cheers 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #709457 27th May 2018 6:09pm
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NickMc



Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1624
Northern Ireland 2006 Defender 90 Td5 HT Bonatti Grey
Sounds like the clutch on the compressor might be stuck on. I’m sure there’s a plethora of videos on YouTube to show you how to test them.
Post #709458 27th May 2018 6:11pm
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 933
Canada 2000 Defender 110 Td5 XS CSW Epsom Green
NickMc, yes that was my supposition as well. Just wanted some input on the degree of spin it aught to have disengaged. Appreciate the feedback. 👍 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #709460 27th May 2018 6:24pm
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NickMc



Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1624
Northern Ireland 2006 Defender 90 Td5 HT Bonatti Grey
You can do the crude screw driver in the clutch trick, but that’s up to you and your own limbs Laughing You can strip the clutches and pull them off, some you need tools for.
Post #709463 27th May 2018 6:33pm
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Clive



Member Since: 21 Mar 2014
Location: Littleborough
Posts: 467
United Kingdom 2004 Defender 90 Td5 X-Tech LE Zambezi Silver
Yes sounds like a seized clutch to me too, the pulley on mine spins with virtually no resistance at all with the belt off and clutch disengaged.
Post #709466 27th May 2018 6:51pm
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 933
Canada 2000 Defender 110 Td5 XS CSW Epsom Green
Thanks Clive tat is what I was looking for, however... Sadly no, I just tested it with 12 volts to the clutch (on the unplugged the wires and it works well). It may require a rebuild though. It clicks in and out ☹️ I have verified the temperature switch is good, the fan switch is good, the AC ECU is good. So I will be checking pressure levels tomorrow at my friends garage. I believe that low levels of R134 can also cause this freeze up and force the clutch to not disengage as it tries to keep up with the low level.

Anyways, thanks all for the input and suggestions. I’ll update when and if I figure out what it is. 🍻 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #709469 27th May 2018 7:30pm
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 933
Canada 2000 Defender 110 Td5 XS CSW Epsom Green
UPDATE. The Schrader valve on the low pressure line was leaking my system had half the R143 it was supposed to have. Replaced the valve bled and recharged the system and it work as it should now. In all my years messing about with cars I have never seen a leaky valve... go figure.

Cheers 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #709866 29th May 2018 10:43pm
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grafty99



Member Since: 15 Aug 2012
Location: North Devon
Posts: 4785
United Kingdom 2002 Defender 90 Td5 HT Caledonian Blue
That's landrover for you, leak where you never thought possible Laughing 2002 90 Td5 Station Wagon
1990 Vogue SE
Triumph Tiger Explorer 1200
Td5 90 Thread http://www.defender2.net/forum/topic50767.html
Tdi 110 Thread https://www.defender2.net/forum/topic69562.html
RRC Thread http://www.defender2.net/forum/topic54492.html
Instagram http://www.instagram.com/george_grafton
Post #709870 29th May 2018 11:05pm
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Tdi4



Member Since: 24 Oct 2014
Location: Houten
Posts: 513
Netherlands 2008 Defender 110 Puma 2.4 CSW Stornoway Grey
Hi

I seem to have the same basic problem. The airco leaks the r143. My system was almost empty. But pressure testing revealed no leaks. And i found no tracés of the green fluoride.

How did you test the valves? a defender from 1984 pretending to be a puma with a touch of Range Rover
Post #709879 30th May 2018 6:20am
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 933
Canada 2000 Defender 110 Td5 XS CSW Epsom Green
Tdi4 I removed the caps amd sprayed soapy water on them and saw bubbles. 👍 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #709921 30th May 2018 11:20am
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Tdi4



Member Since: 24 Oct 2014
Location: Houten
Posts: 513
Netherlands 2008 Defender 110 Puma 2.4 CSW Stornoway Grey
Thnx. I’ll try that this afternoon Thumbs Up

Did you see the green traces of the fluoride under the caps? a defender from 1984 pretending to be a puma with a touch of Range Rover
Post #709923 30th May 2018 11:24am
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Tdi4



Member Since: 24 Oct 2014
Location: Houten
Posts: 513
Netherlands 2008 Defender 110 Puma 2.4 CSW Stornoway Grey
Hmmm that isn’t the problem.

Any ideaal what could be the problem? a defender from 1984 pretending to be a puma with a touch of Range Rover
Post #709928 30th May 2018 12:08pm
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 933
Canada 2000 Defender 110 Td5 XS CSW Epsom Green
No coloured dye present just gas (ppffffft!). Check your evaporator, get a flash light (torch) and shine it into the vent and see what you can see... if it has a leak the condensation from the evap will dilute the dye and male it less visible. 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #710063 30th May 2018 11:00pm
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Naf



Member Since: 07 Dec 2016
Location: Sandbox
Posts: 412
Kuwait 2000 Defender 130 Td5 HCPU Nato Green No Canopy
the thermostat switch could be malfunctioning, if your ac clutch was stuck, it would always be on regardless if it was activated or not, but i only have seen ac clutches fail with slip.

Check the thermostat switch, it could be damaged
Post #710850 5th Jun 2018 8:36am
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