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Air con issue
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Morepower
 


Member Since: 18 May 2012
Location: Somerset
Posts: 166

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3
Air con issue

Hi all
I called into see my D3 today, the dealer is doing a few little jobs under warrantyšŸ‘šŸ» The problem is the air con, it blows cold but not very cold, they have looked at it and the compressor is working (starting up ok) itā€™s full of gas but they canā€™t get it to blow any colderšŸ˜± anyone got any ideas what it could be, are there any known faults, itā€™s an HSE with the rear heating/air con.

Cheers

Graham
  
Post #18777299th Nov 2017 8:40 pm
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Bodsy
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Member Since: 06 Nov 2006
Location: In the Clubhouse
Posts: 21361

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

If thereā€™s no leak and the compressor is working fine, then try changing the heater control module.
Itā€™s behind the lower glovebox, held into the plastic ducting with two screws.
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See It Here 
 
Post #18777339th Nov 2017 8:46 pm
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Morepower
 


Member Since: 18 May 2012
Location: Somerset
Posts: 166

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Got the car back now, all seems ok except Iā€™m not sure the compressor is actually working, how/what is the best things to check, is there any known faults?
  
Post #187820711th Nov 2017 7:57 am
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Has it got rear roof mounted a/c vents?
  
Post #187821111th Nov 2017 9:07 am
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Morepower
 


Member Since: 18 May 2012
Location: Somerset
Posts: 166

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Yep got vents in the rear and controls on the roof?
  
Post #187821811th Nov 2017 10:04 am
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

I would still go for low gas pressure, you can have gas but not enough.
Its quite common for the under body air con pipes to rot out near their joins and leak the gas out, mine took weeks before it lost pressure, in the end had to pressurise the system and get the squirty soapy water bottle out to find the pin hole.
Pipe section was about 160 quid and its been fine ever since.

If you look underneath the pipes are attached to the insides of the sills, right hand side of the car is two coolant pipes and left hand side is the two air con pipes.

I know its stating the obvious but cars with rear a/c hold more gas than std motors.

The a/c compressor is not the straight forward on/off type of old, google variable displacement air con compressor.
  
Post #187835411th Nov 2017 5:41 pm
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Morepower
 


Member Since: 18 May 2012
Location: Somerset
Posts: 166

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Thanks for this, Iā€™ll get under and have a look when the rain stops ā˜”ļøāš”ļø
  
Post #187848912th Nov 2017 8:17 am
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