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Member Since: 10 Jul 2019
Location: Coventry
Posts: 18

United Kingdom 
4.4 TDV8 No A/C!

Big Cry Nigh on 30 degrees and no A/C in the cheapest 4.4 TDV8 in the UK! Big Cry

I got myself some gauges and took some readings...

This was yesterday evening, when it was around 26-27°C ambient. A/C turned on with blowers on. Engine fan was running.

Oddly, the gauges barely move when the A/C is turned off in the cab.


I took a couple of snips from the IID tool on my drive home this evening. First one is just cruising at low speed in town;

Click image to enlarge

And the second one is at 70mph cruising. Both times with the A/C on minimum temperature and max fan speeds.
Click image to enlarge

Any clues as to what I'm looking at here? Compressor? Refrigerant control valve thingumy?



Post #597527 14th Jun 2021 8:03pm
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Member Since: 10 Mar 2021
Location: InThePub
Posts: 168

United Kingdom 

Compressing Air?
Car ac repair and car ac service
Air-conditioning systems in cars and vans contain fluorinated gases (F-gases). These gases are powerful greenhouse gases and may escape during the vehicle's lifetime, servicing and at the end of the vehicle's life. F-gases are more likely to leak accidentally from older vehicles.

What you must do

Use a qualified person to recover your F-gases

F-gases must be recovered from vehicle air-conditioning systems during servicing and dismantling. This must only be done by a suitably qualified person.

To service, repair or dismantle vehicle air-conditioning equipment you must hold a relevant qualification in refrigerant recovery and handling from one of these organisations:

City and Guilds: Automotive qualifications
Institute of the Motor Industry (IMI): Standards and qualifications
IMI Awards Limited: Qualifications
Institute of Road Transport Engineers (IRTE)

You may also hold:

a relevant in-house qualification issued by a UK employer after a course of training, or
a full qualification issued by a recognised body from another EU member state.
Anyone handling or recovering refrigerants in vehicle air-conditioning equipment requires the correct qualifications to meet minimum requirements.
Cars and vans produced before 1995 may also contain gases that are ozone depleting substances (ODS). You must ensure you comply with the ODS Regulations, and use a suitably qualified person to properly recover any hydrochlorofluorocarbon (HCFC) refrigerants.

Ozone-depleting substances (ODS) and fluorinated gases (F-gases)
If the vehicle's air-conditioning system contains a chlorofluorocarbon (CFC) such as R12, then you should not carry out any maintenance work that involves breaking into the refrigerant circuit.

You should use a specialist business to dispose of equipment containing CFCs and comply with the duty of care for waste.

Find your nearest waste site

Restrictions on using F-gases in your vehicle

If a vehicle's air-conditioning system has had an abnormal leak of refrigerant you must repair the leak before refilling it with F-gases.
Additional guidance on how to assess abnormal leakage is being produced. We will update our guidance when this becomes available.
It is good practice to make sure that you check vehicle air-conditioning equipment containing F-gases for any leaks before refilling it.
You should check with the manufacturer or dealer that a vehicle type is approved before retrofitting an air-conditioning system that uses an F-gas with a global warming potential (GWP) of greater than 150. This includes HFC 134a.
You must not retrofit any car or light van with an air-conditioning system that contains an F-gas with a GWP of greater than 150.
Further information

F-gas Support has published a number of information sheets covering fluorinated gases and air-conditioning for vehicles.

GOV.UK: F-gases - mobile air conditioning

For further information about end-of-life vehicles see the NetRegs guidance.

End-of-life vehicles 2018 SE SDV8 4.4 Byron Blue

Post #597555 15th Jun 2021 7:05am
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Member Since: 08 Feb 2018
Location: Daventry
Posts: 409

United Kingdom 2012 Range Rover Vogue 4.4 V8 Barolo Black

Hey Sam,

it will be the valve thingy in the compressor!! as the job is such a pain and assuming you have ruled out fuses for the cost of a new compressor you may as well do the whole thing!! 2012 Vogue 4.4 TDV8 - Current
2014 Navara V6 - Gone
2004 Vogue TD6 - Gone
Grand Cherokee - Gone
Discovery V8 (LPG) - Gone
Discovery TD5 - Gone

Post #597559 15th Jun 2021 8:31am
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Member Since: 16 Apr 2015
Location: Hampshire
Posts: 2839

United Kingdom 2011 Range Rover Vogue SE TDV8 Buckingham Blue

Sam - I'm having mine "looked" at later today. Takes a while to kick in and then fluctuates cold/ambient on a run.
We have a thread on it here too:
I'll report back on that thread later Thumbs Up 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory interior and clear glass = "Rory"
1974 Series 3 Lightweight = "Millie"
2012 SDV6 Range Rover Sport - gone
2012 Freelander - gone
1993 200 Tdi Range Rover Classic - gone after 14 years rolling restoration "Rangie"
Series 2A V8 Lightweight - gone
1952 80" - gone
1949 80" - still in family since 1975

Post #597560 15th Jun 2021 8:50am
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