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C4 Air con problem.

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Spireman   
Fri Aug 21 2020, 12:58pm
Member No: #56701
Joined: Aug 12 2020
Location: Chesterfield
C4 2007 2litre Hdi 6sp. Auto.
Took vehicle for air con recharge to a local garage. Its not worked for several months. It was vacuum tested, purged, and refilled with gas (450 grams. Motor was started, compressor kicked in, rad fan started, everything was ok -- except little if any cooling. System was evacuated, purged, and refilled as before, with exactly the same result. The vehicle was connected to live data -- ( I am not any sort of expert here) and the garage owner said there was nothing unusual in the readings, the heater was adjusting the temperature on both sides correctly-- everything was ok except the lack of cold. Today I have changed the cabin filter with no change to the problem. The garage suggest I ask this forum for any ideaa. Thanks
PS -- not been charged yet --
vexorg   
Sat Aug 22 2020, 01:13am
Member No: #48843
Joined: Jul 06 2017
Location: Scotland
Did they put the dye in? usually the normal way to find the leaks
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 Spireman (22 Aug 2020 : 03:17)
Spireman   
Sat Aug 22 2020, 03:15am
Member No: #56701
Joined: Aug 12 2020
Location: Chesterfield
Thanks David, but its holding pressure, with no leaks! Dye was put in, but several scans with his light showed nothing. Its really odd, as there appears nothing amiss, and it should work-- but doesn't. I'm wondering about the actual gas -- ???
routemaster1   
Sat Aug 22 2020, 06:02am
Member No: #574
Joined: Jul 08 2007
Location: Dorset
Spireman wrote ...

Thanks David, but its holding pressure, with no leaks! Dye was put in, but several scans with his light showed nothing. Its really odd, as there appears nothing amiss, and it should work-- but doesn't. I'm wondering about the actual gas -- ???

I have a similar dilemma. Mine continually loses fluid, but the aircon works fine until there isn't sufficient fluid for the system to operate, which seems to take several months. Its been in several times and had double doses of fluid but they still can't locate the leak. Not a big issue for me (but maybe for the environment) as all work has been done under warranty.
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 Spireman (24 Aug 2020 : 05:47)
Ap0qalypto   
Mon Aug 24 2020, 01:29am
Member No: #52161
Joined: Sep 21 2018
Location: Republic of Serbia
If its loosing gas, it has to be on ac radiator. Mine was changed couple of months ago. Its due to fan being very close to radiator.
iscom   
Mon Aug 24 2020, 03:50am
Member No: #20936
Joined: Jul 21 2011
Location: Ireland Fermanagh & Galway
Judging by posting on Face book and other forums it looks like there is a problem with the valves having to be replaced due to leaking including mine
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 Spireman (24 Aug 2020 : 05:47)
routemaster1   
Mon Aug 24 2020, 04:18am
Member No: #574
Joined: Jul 08 2007
Location: Dorset
iscom wrote ...

Judging by posting on Face book and other forums it looks like there is a problem with the valves having to be replaced due to leaking including mine


They are supposed to have checked my valves and it still lost fluid. Been OK for the summer since the last refill, so perhaps they have sorted it.
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 Spireman (24 Aug 2020 : 05:46)
Spireman   
Mon Aug 24 2020, 06:07am
Member No: #56701
Joined: Aug 12 2020
Location: Chesterfield
Thanks for all your help, but its not loosing pressure, or gas. You can hear the compressor kick in, it does everything except cool. The temperature drops about 3 degrees in live data -- slightly (0.5 deg C ) more if the engine is revved. The large alloy pipe from the compressor does not get cold -- on my wifes car ( Daihatsu -- sorry) the same pipe gets icy in seconds. Shall I have it drained and change the compressor? What else could it be -- thanks.
routemaster1   
Mon Aug 24 2020, 06:10am
Member No: #574
Joined: Jul 08 2007
Location: Dorset
Spireman wrote ...

Thanks for all your help, but its not loosing pressure, or gas. You can hear the compressor kick in, it does everything except cool. The temperature drops about 3 degrees in live data -- slightly (0.5 deg C ) more if the engine is revved. The large alloy pipe from the compressor does not get cold -- on my wifes car ( Daihatsu -- sorry) the same pipe gets icy in seconds. Shall I have it drained and change the compressor? What else could it be -- thanks.


I suppose it could be the compressor clutch or a problem with the control system. I know it may cost, but it could be a wise move to consult an aircon specialist before changing the compressor.
Spireman   
Mon Sep 14 2020, 10:29am
Member No: #56701
Joined: Aug 12 2020
Location: Chesterfield
Situation now resolved. Thought about it and concluded it was likely to be a faulty compressor. I was surprised how cheap second hand examples were on E**y so I spent £21 including postage -- and after getting the aircon system emptied, I fitted the s/h unit. Got the system recharged, and it instantly worked on start up. It must have been my day! Thanks ti all for all for your help and advice--


 

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