Member Since: 16 Sep 2019
Location: Newcastle Under Lyme, Staffs
Posts: 171
Air Con question
Hi all
Tried to connect my air conditioning manifold gauges to my 2005 D7 TDv6 today to check the pressure in the system and add some refrigerant if necessary, as it's started to blow a bit warm.
Anyhow, I couldn't get the low side quick disconnector to fit ? The high side fitted fine. The low side port is slightly cramped around the heat shield and battery box, but I could see it wasn't fouled anywhere.
Does anyone know if the low side port connector is "non standard" ? The gauges have worked and fitted fine on all the other cars I've used them on.
Thanks
Mat2005 TDV6 SE Auto
Cairns Blue
Last edited by matgriff on 28th May 2021 5:13 pm. Edited 2 times in total
28th May 2021 4:19 pm
matgriff
Member Since: 16 Sep 2019
Location: Newcastle Under Lyme, Staffs
Posts: 171
Hi again, further to this I checked the pressure with my IID tool, the system pressure is around 26 psi with the AC off and the engine running, I noticed that switching the AC on does cause the compressor to operate, as the current stays at 0.0 amps
Does anyone know what the under pressure lock out is ? I'm guessing at 26psi I'm right on the border of low pressure. Maybe I have a small leak ?
Thanks
Mat2005 TDV6 SE Auto
Cairns Blue
Last edited by matgriff on 28th May 2021 5:12 pm. Edited 1 time in total
28th May 2021 4:57 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10685
Sounds too low.
It’s a standard valve. That one has a habit of the valve sticking open and failing. Maybe cus of the poor access
28th May 2021 5:12 pm
matgriff
Member Since: 16 Sep 2019
Location: Newcastle Under Lyme, Staffs
Posts: 171
OK thanks, I'll have another look at it tomorrow.
Mat2005 TDV6 SE Auto
Cairns Blue
28th May 2021 5:20 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5044
Pressure way too low, in the off position the the system pressure should be much higher. Something like 4-500kPa with the system off. After start up with fan on full, it should rise to around 1450kPa or thereabouts and fluctuate thereafter depending on demand.
Refrigerant refill for the TDV6 is 550g for a front only a/c system, and 810g for front/rear a/c.
It's usually the condenser on these that either get punctured from road grit, or they rot out at the bottom from standing debris/water.yµ (idµ - eAµ) ψ=mψ
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