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 Posted: Mon Jun 25, 2012 2:18 am |
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Joined: Dec 16, 2010
Posts: 1533
Trade Rating: +10
Location: UK
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Check that you have air coming from the blowers on speeds 1,2,3 and 4.
My air-con stopped working along with speed setting 1 (which I didn’t notice at first because it’s so quiet and slow).
It turned out that the "blower motor resistor" (thing which controls the fan speeds) also deals with activating the compressor when you press the a/c button on the panel.
It could be something on the resistor block that’s blown preventing your compressor from activating. (£20 from pug)
Also,
Do you get the green light come on when you press the a/c button?
Can you hear the compressor clutch engage with the engine?
Does the radiator fan start spinning when you press the a/c button?
When my air-con wasn’t working I had the light come on but the clutch didn’t engage and the radiator fan didn’t spin.
Hope this helps.
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| Please Dont take any of my posts as written fact. They are simply my opinion and although to the best of my knowledge true, the information within them may well be incorrect.
Any work you undertake as a result of my posts is done so at your own risk  | |
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Posted: Mon Jun 25, 2012 3:41 am |
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Joined: Feb 07, 2010
Posts: 2632
Trade Rating: +6
Location: Rugby,Warwickshire
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| very_452001 wrote: |
| Seabook wrote: |
| very_452001 wrote: |
| DeadEyePaul wrote: |
Many garages can add a UV dye into the gas and allow it to leak then use a UV lamp to detect where your
Leak is |
if there's a leak then what does the garage has to do? |
fix the leak?  |
do they fix the part or replace it? |
never had to get it done tbh. Peugeot re-gassed my system and told me they can inject a dye to check for any leaks
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Posted: Mon Jun 25, 2012 5:48 am |
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Joined: Jun 18, 2012
Posts: 280
Trade Rating: 0
Location: Birmingham
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| MrrNoName wrote: |
Check that you have air coming from the blowers on speeds 1,2,3 and 4.
My air-con stopped working along with speed setting 1 (which I didn’t notice at first because it’s so quiet and slow).
It turned out that the "blower motor resistor" (thing which controls the fan speeds) also deals with activating the compressor when you press the a/c button on the panel.
It could be something on the resistor block that’s blown preventing your compressor from activating. (£20 from pug)
Also,
Do you get the green light come on when you press the a/c button?
Can you hear the compressor clutch engage with the engine?
Does the radiator fan start spinning when you press the a/c button?
When my air-con wasn’t working I had the light come on but the clutch didn’t engage and the radiator fan didn’t spin.
Hope this helps. |
yeah the ac light comes on, what is a compressor clutch?
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Posted: Mon Jun 25, 2012 7:05 am |
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Joined: Dec 16, 2010
Posts: 1533
Trade Rating: +10
Location: UK
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The compressor which runs the air conditioning is driven directly from the engine in a mechanical process.
When you switch the air conditioning on or off an electronically controlled clutch engages/disengages the compressor from the engine.
If the clutch is working and engaging/disengaging the compressor you will hear a "clunk" and the engines revs will change slightly for a split second when the a/c button is pressed (look at the rev gauge when pressing the button, the needle will flutter then settle back to idle).
If this DOES happen then the problem is more likely to be mechanical (bad compressor, or a gas leak etc) as the air-con system is running.
If this DOES NOT happen then the air-con is not running because the vehicle's electrical system is not switching the air-con on when you press the button.
So to sum up, let the engine idle and press the button once to switch the air-con on, if you hear no "click/clunk" and the engines revs do not change at all you most likely have an electrical problem.
If you hear the clunk and see the revs change slightly (the needle will dip for a second) then you probably have a gas leak.
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| Please Dont take any of my posts as written fact. They are simply my opinion and although to the best of my knowledge true, the information within them may well be incorrect.
Any work you undertake as a result of my posts is done so at your own risk | |
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Posted: Mon Jun 25, 2012 7:33 am |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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The system pressure safety switch will also stop the aircon compressor from cutting in if the gas pressure is to low OR to high.
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| Toyota C-HR GR Sport 2.0 Hybrid with JBL & Alcantara packs. | |
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Posted: Mon Jun 25, 2012 8:03 pm |
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Joined: Aug 04, 2011
Posts: 1343
Trade Rating: 0
Location: Swindon
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You are already discovering that aircon is quite complex. Due to your limited knowledge i suggest that you take it to a specialist. I don't mean to be rude or arrogant but it will probably take many, many posts to lead you to the fault and that assumes you aren't going to need a multimeter to check supply voltages at various points in the aircon control system nor a leak.
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| Morris 1000, Austin 1100, Escort Mk2, Fiat Mirafiori, Alfa 33, Alfa GT Junior, Alfasud, Alfetta GTV (2x), Alfa 164 3.0 V6, Alfa 164 2.0, Alfa 75 V6, Alfa 156 2.4 (diesel remapped 200bhp), Alfa 147 GTA (3.6 295bhp), Alfa 159 (diesel remapped 245bhp 300ft.lbs @ 2500rpm)
Why isn't my daughter an Alfaholic? | |
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Posted: Sun Jul 01, 2012 5:22 pm |
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Joined: Jun 18, 2012
Posts: 280
Trade Rating: 0
Location: Birmingham
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| MrrNoName wrote: |
The compressor which runs the air conditioning is driven directly from the engine in a mechanical process.
When you switch the air conditioning on or off an electronically controlled clutch engages/disengages the compressor from the engine.
If the clutch is working and engaging/disengaging the compressor you will hear a "clunk" and the engines revs will change slightly for a split second when the a/c button is pressed (look at the rev gauge when pressing the button, the needle will flutter then settle back to idle).
If this DOES happen then the problem is more likely to be mechanical (bad compressor, or a gas leak etc) as the air-con system is running.
If this DOES NOT happen then the air-con is not running because the vehicle's electrical system is not switching the air-con on when you press the button.
So to sum up, let the engine idle and press the button once to switch the air-con on, if you hear no "click/clunk" and the engines revs do not change at all you most likely have an electrical problem.
If you hear the clunk and see the revs change slightly (the needle will dip for a second) then you probably have a gas leak. |
i pressed the ac button when idle and dont see the revs changing or hear no noise but i see the ac light is on.
Please advise.
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Posted: Mon Jul 02, 2012 12:34 am |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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As stated above
The system pressure safety switch will also stop the aircon compressor from cutting in if the gas pressure is to low OR to high.
So the first step would be to check system pressure whilst it is static to see if it at least up to the minimum. If you're unable to do that then you need to take it to an A/C specialist who knows what they're doing. If the pressure is not up to minimum then you have a leak and will need to take it to an A/C specialist. Your previous guy should have checked your A/C was functioning properly before handing the car back to you
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Posted: Mon Jul 02, 2012 3:16 am |
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Joined: Jun 18, 2012
Posts: 280
Trade Rating: 0
Location: Birmingham
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So is it a electrical or mechanical problem?
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Posted: Mon Jul 02, 2012 3:24 am |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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| very_452001 wrote: |
| So is it a electrical or mechanical problem? |
Like I posted last week, take it to a aircon specialist that actually knows what there doing as your obviously out of your depth.
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| Toyota C-HR GR Sport 2.0 Hybrid with JBL & Alcantara packs. | |
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Posted: Mon Jul 02, 2012 4:56 am |
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Joined: Feb 07, 2010
Posts: 2720
Trade Rating: +6
Location: UK
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| very_452001 wrote: |
| So is it a electrical or mechanical problem? |
How can we tell, we cant see the car! Take it back if its not working, most places dont charge if it doesnt work.
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Posted: Mon Jul 02, 2012 5:14 am |
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Joined: Jun 18, 2012
Posts: 280
Trade Rating: 0
Location: Birmingham
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| MrBSI wrote: |
| very_452001 wrote: |
| So is it a electrical or mechanical problem? |
Like I posted last week, take it to a aircon specialist that actually knows what there doing as your obviously out of your depth. |
these air con specialists will charge specialist money.
if i can get an idea of whats causing the problem then I dont have to go to a air con specialist and get the job done at a good reviews garage for fraction of the price.
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Posted: Mon Jul 02, 2012 5:19 am |
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Joined: Nov 27, 2010
Posts: 11520
Trade Rating: +10
Location: What's it to you? ? ?
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| very_452001 wrote: |
| MrBSI wrote: |
| very_452001 wrote: |
| So is it a electrical or mechanical problem? |
Like I posted last week, take it to a aircon specialist that actually knows what there doing as your obviously out of your depth. |
these air con specialists will charge specialist money.
if i can get an idea of whats causing the problem then I dont have to go to a air con specialist and get the job done at a good reviews garage for fraction of the price. |
Aircon check over including a service of the system is normally around £50 - £80 at a specialist.
Without the correct air con test equipment your stuffed.
Either pay up OR open the window.
You cant mess around with the gas side of an air con system, it can cause a lot of damage & even injury if you get it wrong!
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| Toyota C-HR GR Sport 2.0 Hybrid with JBL & Alcantara packs. | |
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Posted: Mon Jul 02, 2012 5:44 am |
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Joined: Feb 08, 2010
Posts: 10151
Trade Rating: +12
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| very_452001 wrote: |
| MrBSI wrote: |
| very_452001 wrote: |
| So is it a electrical or mechanical problem? |
Like I posted last week, take it to a aircon specialist that actually knows what there doing as your obviously out of your depth. |
these air con specialists will charge specialist money.
if i can get an idea of whats causing the problem then I dont have to go to a air con specialist and get the job done at a good reviews garage for fraction of the price. |
that's a joke right? most garage don't have equipment to work on air-con and they will just ship your car to the air-con specialist to deal with it.
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Posted: Mon Jul 02, 2012 9:40 am |
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Joined: Jun 18, 2012
Posts: 280
Trade Rating: 0
Location: Birmingham
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are the air con specialists available national across the country?
which is the best one to go with the good reviews?
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