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 Posted: Tue Jun 02, 2020 8:56 am |
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Joined: May 02, 2010
Posts: 32
Trade Rating: 0
Location: Southampton UK
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I have made a search but nothing matches the symptoms on my car.
No cold air.
Interior fan working okay on all speeds.
Radiator (A/C) fan works when A/C selected
Interior A/C switch shows green when selected.
A/C compressor clutch engages no problem and stays engaged until A/C switched off.
New pressure switch/sensor fitted (near right hand headlight area) next to radiator.
Checked for lack of refrigerant using a decent DIY system shows way too much pressure at charging point centre of bulkhead below windscreen.
Searched for any other pressure sensors/switches in the system but can't find any.
Haynes manual pretty useless nowadays.
Cannot find correct electrical circuit diagram, only "typical" ones; again useless. Cannot find A/C circuit diagram for this car neither.
Only other option left so far is visiting a Peugeot A/C specialist.
Any advice/ideas would be gratefully received.
Richard
Southampton
2001 206 XSi l.6L 16v petrol.
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Posted: Tue Jun 02, 2020 2:19 pm |
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Joined: Nov 27, 2010
Posts: 11513
Trade Rating: +10
Location: What's it to you? ? ?
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Refrigerate gas pressure needs to be checked first by an A/C specialist.
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| Toyota C-HR GR Sport 2.0 Hybrid with JBL & Alcantara packs. | |
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Posted: Tue Jun 02, 2020 4:38 pm |
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Joined: May 02, 2010
Posts: 32
Trade Rating: 0
Location: Southampton UK
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Thanks MrBSI, agree it looks like a trip to the A/C specialist. Having been in the vehicle maintenance business for over 30 years I am still in the habit of fixing things myself, hence my attempt at this. However, never having previously had to repair an A/c system am rather at a loss. I am intrigued though as to the cause of the fault and will report back here when done - after of course this covid 19 has gone.
Thanks again.
Richard
Southampton
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Posted: Mon Jun 08, 2020 7:30 pm |
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Joined: May 03, 2020
Posts: 16
Trade Rating: 0
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Had the same problem with mine. Quick leak check and re gas and works a treat
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| 2003 1.4 hdi daily runabout s**t box | |
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Posted: Tue Jun 09, 2020 8:41 am |
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Joined: May 02, 2010
Posts: 32
Trade Rating: 0
Location: Southampton UK
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I wish mine was as simple. As I can't find another pressure sensor/switch in the A/C circuit I can only think that the cause of the excess pressure in the low pressure line is a blockage of some sort. I would have thought then that with the excess pressure that the system would prevent the A/C compressor from working - but it turns okay.
I will have to wait a while but have found a Peugeot A/C specialist not too far away.
Richard
Southampton
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Posted: Tue Jun 09, 2020 10:34 pm |
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Joined: Jan 06, 2020
Posts: 176
Trade Rating: 0
Location: Cheshire
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System high head pressure/compressor engaging/no cold air would suggest to me a problem with the orifice tube. I know some fords had a major issue with this getting blocked.
Other options I suppose is the condensor could be utterly knackered and not transferring heat out of the system effectively, you could check this & see if it's either blocked or lost most of it's fins.
(or is it possible maybe, that someone charged it with nitrogen to check for leaks & never got around to evacuating and charging with the correct refrigerant and oil mix?)
Aside from the condensor check, would agree it's best booked into a specialist to see what's going on since we mere mortals aren't allowed to play with this kit  (if it were my world & my rules, I'd let off a squirt of whatever's in there and see if it makes the valve cold. If not, chances are it's not refrigerant & then I'd vent the lot and purge/recharge it with the correct oil and R290 as it's a more effective refrigerant and environment safe. (hint- R290 is a fancy way of saying propane... It works better than R134a and can be vented legally to atmosphere, at the slight penalty of being highly flammable when mixed with air. A bit like petrol, really, and we drive round in cars with far more of that than any AC system can hold.)
Food for thought maybe, but yes my advice would be to have a specialist check the thing out first off  (for a start, if it stinks of gas when they connect to it they'll likely say "not today, thanks")
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Posted: Wed Jun 10, 2020 7:47 am |
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Joined: May 02, 2010
Posts: 32
Trade Rating: 0
Location: Southampton UK
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Thanks, Food for thought. My brother did release some of the gas in the low pressure line into a valved canister to release the extremely high pressure in that part of the system. He got it back into the green on the gauge but when the system was started again (engine running, A/C on) it went back into the red. This leads me to the blockage conclusion.
Prior to this the A/C has been working fine and has never needed any maintenance at all (definitely no nitrogen for leaks).
Now waiting for Covid 19 to go away and then off to the A/C specialist.
Many thanks for the inputs.
Richard
Southampton
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