#1: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Sat Jun 23, 2012 5:43 pm ---- I got my air conditioning regassed a couple of days ago by a oft approved bosch service garage and so far notice there's no ice cold air coming from the vents.
there's no difference between A/C off or on infact.
Please advise
#2: Re: Got Air conditioning Re-gassed but still no cold air? Author: LeeThr, Location: North West WalesPosted: Sat Jun 23, 2012 5:50 pm ---- Did you get them to actually check the pump? Or just regas the system?
#3: Re: Got Air conditioning Re-gassed but still no cold air? Author: purrjoe, Location: South CoastPosted: Sat Jun 23, 2012 11:30 pm ---- Also, is the radiator fan working when you switch the aircon on ?
#4: Re: Got Air conditioning Re-gassed but still no cold air? Author: Timon2210, Location: PalestinePosted: Sun Jun 24, 2012 12:47 am ---- that can be caused with many things,maybe the pump is not working well,or the filter ( Dryer) that is located in the front area next to the radiators is full of moisutre and need to be replaced,and make sure that the fan kicks in when the A/C on,and you hear a click sound.
#5: Re: Got Air conditioning Re-gassed but still no cold air? Author: brad-morris, Location: BromsgrovePosted: Sun Jun 24, 2012 12:57 am ---- This comes up so often, as you haven't stated if you have got the leak fixed not "re-gassed" if you've lost refrigerant you have a leak end of.
#6: Re: Got Air conditioning Re-gassed but still no cold air? Author: MrBSI, Location: What's it to you? ? ?Posted: Sun Jun 24, 2012 2:00 am ----
very_452001 wrote:
I got my air conditioning regassed a couple of days ago by a oft approved bosch service garage and so far notice there's no ice cold air coming from the vents.
there's no difference between A/C off or on infact.
Please advise
Take it to a aircon specialist that actually knows what there doing.
#7: Re: Got Air conditioning Re-gassed but still no cold air? Author: Deckchair5, Location: Bath UKPosted: Sun Jun 24, 2012 2:25 am ----
Without the system actually running and working then it's impossible to be sure it has been refilled properly. Just pumping some gas in doesn't do the job
#8: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Sun Jun 24, 2012 3:09 am ----
LeeThr wrote:
Did you get them to actually check the pump? Or just regas the system?
I told them to regass the air con cause that's what I thought it needed. I didn't know about filters, pumps, fans, radiators, leaks at the time. They are suppose 2 check that before regassing right?
#9: Re: Got Air conditioning Re-gassed but still no cold air? Author: andyleep, Location: GloucestershirePosted: Sun Jun 24, 2012 3:16 am ---- A leak somewhere
#10: Re: Got Air conditioning Re-gassed but still no cold air? Author: MrBSI, Location: What's it to you? ? ?Posted: Sun Jun 24, 2012 3:16 am ---- You asked them to regass it so thats whay they did.
A proper aircon service on a working system should take around an hour.
Thats for a vac out including system pressure check, re gas & re oil including UV dye then run up to check the system is working correctly & is still gas tight.
The vac out & pressure check alone should be at least 30 mins.
#11: Re: Got Air conditioning Re-gassed but still no cold air? Author: DeadEyePaul, Location: Rugby,WarwickshirePosted: Sun Jun 24, 2012 3:21 am ---- 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
#12: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Sun Jun 24, 2012 6:14 am ----
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?
#13: Re: Got Air conditioning Re-gassed but still no cold air? Author: Seabook, Posted: Sun Jun 24, 2012 8:29 am ----
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?
#14: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Sun Jun 24, 2012 4:54 pm ----
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?
#15: Re: Got Air conditioning Re-gassed but still no cold air? Author: spike_202, Location: West midsPosted: Mon Jun 25, 2012 12:24 am ----
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
This is very clever, didn't know they did such a thing.
I would asume they would just fit some new pipe or alloy wield the hole or could be a joint that's leaking in that case they'll replace the fixing.
#16: Re: Got Air conditioning Re-gassed but still no cold air? Author: MrrNoName, Location: UKPosted: Mon Jun 25, 2012 2:18 am ---- 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.
#17: Re: Got Air conditioning Re-gassed but still no cold air? Author: DeadEyePaul, Location: Rugby,WarwickshirePosted: Mon Jun 25, 2012 3:41 am ----
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
#18: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Mon Jun 25, 2012 5:48 am ----
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?
#19: Re: Got Air conditioning Re-gassed but still no cold air? Author: MrrNoName, Location: UKPosted: Mon Jun 25, 2012 7:05 am ---- 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.
#20: Re: Got Air conditioning Re-gassed but still no cold air? Author: MrBSI, Location: What's it to you? ? ?Posted: Mon Jun 25, 2012 7:33 am ---- The system pressure safety switch will also stop the aircon compressor from cutting in if the gas pressure is to low OR to high.
#21: Re: Got Air conditioning Re-gassed but still no cold air? Author: kandlbarrett, Location: SwindonPosted: Mon Jun 25, 2012 8:03 pm ---- 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.
#22: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Sun Jul 01, 2012 5:22 pm ----
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.
#23: Re: Got Air conditioning Re-gassed but still no cold air? Author: Deckchair5, Location: Bath UKPosted: Mon Jul 02, 2012 12:34 am ---- 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
#24: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Mon Jul 02, 2012 3:16 am ---- So is it a electrical or mechanical problem?
#25: Re: Got Air conditioning Re-gassed but still no cold air? Author: MrBSI, Location: What's it to you? ? ?Posted: Mon Jul 02, 2012 3:24 am ----
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.
#26: Re: Got Air conditioning Re-gassed but still no cold air? Author: Steve206, Location: UKPosted: Mon Jul 02, 2012 4:56 am ----
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.
#27: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Mon Jul 02, 2012 5:14 am ----
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.
#28: Re: Got Air conditioning Re-gassed but still no cold air? Author: MrBSI, Location: What's it to you? ? ?Posted: Mon Jul 02, 2012 5:19 am ----
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!
#29: Re: Got Air conditioning Re-gassed but still no cold air? Author: Seabook, Posted: Mon Jul 02, 2012 5:44 am ----
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.
#30: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Mon Jul 02, 2012 9:40 am ---- are the air con specialists available national across the country?
which is the best one to go with the good reviews?
#31: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Tue Jul 03, 2012 12:30 pm ---- for the AC to work does the air intake slider has to be in the inside air circulate position or outside air position or either?
#32: Re: Got Air conditioning Re-gassed but still no cold air? Author: kandlbarrett, Location: SwindonPosted: Tue Jul 03, 2012 2:11 pm ---- Kwikfit do "no-fix, no fee" £50 for a fix or free if it doesn't work.
They purged and attempted to charge mine. That took 30mins approx but it wouldn't hold the charge so no fee.
#33: Re: Got Air conditioning Re-gassed but still no cold air? Author: Seabook, Posted: Tue Jul 03, 2012 2:16 pm ----
very_452001 wrote:
for the AC to work does the air intake slider has to be in the inside air circulate position or outside air position or either?
doesn't matter.
AC will be on when you press it
#34: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Tue Jul 03, 2012 4:43 pm ----
Seabook wrote:
very_452001 wrote:
for the AC to work does the air intake slider has to be in the inside air circulate position or outside air position or either?
doesn't matter.
AC will be on when you press it
mechanic told me it should be recycle air circulate position for the ac to work properly. what the hell?
#35: Re: Got Air conditioning Re-gassed but still no cold air? Author: spike_202, Location: West midsPosted: Tue Jul 03, 2012 5:00 pm ---- Only to get it cold quicker and more controlled temp as it 'recycles' the air in the car instead of letting fresh air into the car from outside. That's why people say air con won't work if the windows open...yes it will but not v.effectively that's all.
#36: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Wed Jul 04, 2012 3:31 am ----
spike_202 wrote:
Only to get it cold quicker and more controlled temp as it 'recycles' the air in the car instead of letting fresh air into the car from outside. That's why people say air con won't work if the windows open...yes it will but not v.effectively that's all.
So the mechanic was talking rubbish. The air intake slider can be in any position.
#37: Re: Got Air conditioning Re-gassed but still no cold air? Author: spike_202, Location: West midsPosted: Wed Jul 04, 2012 3:36 am ---- Oh I thought you was asking about a digital one my bad, I'm not sure about the lower spec models, all I know is as soon as you press the ac button it's working, regardless were the slider possision is
#38: Re: Got Air conditioning Re-gassed but still no cold air? Author: MrBSI, Location: What's it to you? ? ?Posted: Wed Jul 04, 2012 5:25 am ---- The car needs to go to an aircon specialist as several people have already mentioned in this thread BUT very_452001 cant be bothered.
Until someone that ACTUALLY KNOWS WHAT THERE DOING diagnosis the problem the aircon system will just stay non working.
There is only so much help you can give people BUT when they dont listen as they think they know better its just a waste of time
#39: Re: Got Air conditioning Re-gassed but still no cold air? Author: kandlbarrett, Location: SwindonPosted: Wed Jul 04, 2012 5:01 pm ---- +1.
This guy doesn't even understand the difference between voltage and potential difference. He doesn't stand a chance fixing air con.
There is a joke in there a most should spot it.
#40: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Thu Jul 05, 2012 3:11 am ---- Ok I go to a air con specialists. I live in birmingham. Are kwik fit air con specialists or con specialists?
#41: Re: Got Air conditioning Re-gassed but still no cold air? Author: broadblaster, Location: south coastPosted: Thu Jul 05, 2012 12:37 pm ---- forget kwik fit fella just do a google search for air con specialist in your area
#42: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Thu Jul 05, 2012 2:57 pm ---- there's loads in the birmingham area. Which is the best in birmingham?
#43: Re: Got Air conditioning Re-gassed but still no cold air? Author: broadblaster, Location: south coastPosted: Thu Jul 05, 2012 2:59 pm ---- the one that is the most local to you and gives a warenty on there work
#44: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Thu Jul 05, 2012 3:11 pm ---- anyone from birmingham with reccomendations?
#45: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Wed Jul 24, 2013 8:52 am ---- Update: I took it to a air con specialist today and he connected a pressure gauge to it and told me there's no pressure. Thats all he told me.
My AC light comes on, fuses are ok.
When I press the AC button I dont hear any sounds or see the Rev dial moving.
I can see the radiator fan spinning regardless of AC button is on or off. I did this fan test when engine is hot. Or am I suppose to check the fan is spinning when engine is cold?
Im still confused whether I have a electrical or mechanical problem? No pressure or leaks means mechanical right? Yet I have symptons of electrical problem as well.
What is the commom diagnostic problem to AC failures when it comes to 206's in general?
#46: Re: Got Air conditioning Re-gassed but still no cold air? Author: MrBSI, Location: What's it to you? ? ?Posted: Wed Jul 24, 2013 9:12 am ---- If there's no gas in the system then the aircon compressor clutch wont cut it.
Doesn't sound much of an aircon specialist with a crap diagnosis like that.
Did they fill the system with nitrogen to test for leaks OR vac the system ouy to see if it will hold a vacuum, those are the 2 accepted tests to see if an aircon system is gas tight,
#47: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Wed Jul 24, 2013 11:04 am ----
MrBSI wrote:
If there's no gas in the system then the aircon compressor clutch wont cut it.
Doesn't sound much of an aircon specialist with a crap diagnosis like that.
Did they fill the system with nitrogen to test for leaks OR vac the system ouy to see if it will hold a vacuum, those are the 2 accepted tests to see if an aircon system is gas tight,
no they have not done the leak or vac test. Just the pressure test. lets say if it passes those tests and is gas tight then what problem do you think I have? Mechanical or electrical problem?
#48: Re: Got Air conditioning Re-gassed but still no cold air? Author: MrBSI, Location: What's it to you? ? ?Posted: Wed Jul 24, 2013 11:09 am ----
very_452001 wrote:
MrBSI wrote:
If there's no gas in the system then the aircon compressor clutch wont cut it.
Doesn't sound much of an aircon specialist with a crap diagnosis like that.
Did they fill the system with nitrogen to test for leaks OR vac the system ouy to see if it will hold a vacuum, those are the 2 accepted tests to see if an aircon system is gas tight,
no they have not done the leak or vac test. Just the pressure test. lets say if it passes those tests and is gas tight then what problem do you think I have? Mechanical or electrical problem?
The system hasn't got a hope in hell of working until it's regassed, your wasting your time until then.
#49: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Wed Jul 24, 2013 11:19 am ----
MrBSI wrote:
very_452001 wrote:
MrBSI wrote:
If there's no gas in the system then the aircon compressor clutch wont cut it.
Doesn't sound much of an aircon specialist with a crap diagnosis like that.
Did they fill the system with nitrogen to test for leaks OR vac the system ouy to see if it will hold a vacuum, those are the 2 accepted tests to see if an aircon system is gas tight,
no they have not done the leak or vac test. Just the pressure test. lets say if it passes those tests and is gas tight then what problem do you think I have? Mechanical or electrical problem?
The system hasn't got a hope in hell of working until it's regassed, your wasting your time until then.
I had it regassed
#50: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Wed Aug 07, 2013 8:50 am ---- anyone? before this turns into a x file and im screwed
#51: Re: Got Air conditioning Re-gassed but still no cold air? Author: Barking, Location: sarcasm-in-shedloadsPosted: Wed Aug 07, 2013 9:01 am ----
very_452001 wrote:
anyone? before this turns into a x file and im screwed
If you haven't done anything about it since you started this thread, you are unlikely to need the A/C anyway.
#52: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Wed Aug 07, 2013 9:35 am ----
Barking wrote:
very_452001 wrote:
anyone? before this turns into a x file and im screwed
If you haven't done anything about it since you started this thread, you are unlikely to need the A/C anyway.
thanks for your help, anyone else want to reply with more helpful replies like this?
#53: Re: Got Air conditioning Re-gassed but still no cold air? Author: Barking, Location: sarcasm-in-shedloadsPosted: Wed Aug 07, 2013 9:46 am ----
very_452001 wrote:
Barking wrote:
very_452001 wrote:
anyone? before this turns into a x file and im screwed
If you haven't done anything about it since you started this thread, you are unlikely to need the A/C anyway.
thanks for your help, anyone else want to reply with more helpful replies like this?
You appear to have ignored all the help so far, what other 'help' are you expecting?
#54: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Thu Aug 08, 2013 6:44 pm ----
Barking wrote:
very_452001 wrote:
Barking wrote:
very_452001 wrote:
anyone? before this turns into a x file and im screwed
If you haven't done anything about it since you started this thread, you are unlikely to need the A/C anyway.
thanks for your help, anyone else want to reply with more helpful replies like this?
You appear to have ignored all the help so far, what other 'help' are you expecting?
yeah I ignored the advice to see a air con specialist hence i went to go to see one.
#55: Re: Got Air conditioning Re-gassed but still no cold air? Author: macca1411, Location: Westhoughton, LancashirePosted: Fri Aug 09, 2013 2:16 am ---- When you went to the "air con specialist" what did you ask them to do, and what did they charge you for doing? They haven't really told you anything that a bloke in the pub couldn't tell you
Odd that someone qualified to work on air con would only say there's no pressure and not mention why.
99.9% of people that offer a service would try and get the work to fix the fault by giving a repair estimate.
You should name and shame the company so that others know who to avoid in the future.
#56: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Fri Aug 16, 2013 6:48 pm ----
macca1411 wrote:
When you went to the "air con specialist" what did you ask them to do, and what did they charge you for doing? They haven't really told you anything that a bloke in the pub couldn't tell you
Odd that someone qualified to work on air con would only say there's no pressure and not mention why.
99.9% of people that offer a service would try and get the work to fix the fault by giving a repair estimate.
You should name and shame the company so that others know who to avoid in the future.
According to google reviews they are suppose to be the best in birmingham at the moment.
#57: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Wed Jun 18, 2014 10:12 am ----
MrBSI wrote:
If there's no gas in the system then the aircon compressor clutch wont cut it.
Doesn't sound much of an aircon specialist with a crap diagnosis like that.
Did they fill the system with nitrogen to test for leaks OR vac the system ouy to see if it will hold a vacuum, those are the 2 accepted tests to see if an aircon system is gas tight,
Is the compressor and pump both mean the same thing?
The compressor/pump wont start until there's gas in the A/C system?
#58: Re: Got Air conditioning Re-gassed but still no cold air? Author: mtempsch, Location: Gothenburg, SwedenPosted: Wed Jun 18, 2014 1:36 pm ----
very_452001 wrote:
The compressor/pump wont start until there's gas in the A/C system?
Yes, as been stated previously in the thread.
There's a clutch that controls whether the AC compressor turns.The clutch is in turn controlled by a pressure switch as a safety feature (as well as the AC panel, but the pressure switch has priority).
No pressure -> switch off-> clutch does not engage-> AC compressor doesn't turn-> no cooling.
#59: Re: Got Air conditioning Re-gassed but still no cold air? Author: very_452001, Location: BirminghamPosted: Fri Jun 20, 2014 3:35 am ----
mtempsch wrote:
very_452001 wrote:
The compressor/pump wont start until there's gas in the A/C system?
Yes, as been stated previously in the thread.
There's a clutch that controls whether the AC compressor turns.The clutch is in turn controlled by a pressure switch as a safety feature (as well as the AC panel, but the pressure switch has priority).
No pressure -> switch off-> clutch does not engage-> AC compressor doesn't turn-> no cooling.
Ok so I cant rule out that its the compressor fault unless there's pressure in the system and that means getting it re-gassed with UV Dye to check for leaks. At this stage can I see the compressor is moving mechanically in the engine bay? If its moving that means compressor is working and i have a leak instead?
#60: Re: Got Air conditioning Re-gassed but still no cold air? Author: mtempsch, Location: Gothenburg, SwedenPosted: Fri Jun 20, 2014 4:04 am ----
very_452001 wrote:
Ok so I cant rule out that its the compressor fault unless there's pressure in the system and that means getting it re-gassed with UV Dye to check for leaks. At this stage can I see the compressor is moving mechanically in the engine bay? If its moving that means compressor is working and i have a leak instead?
If it's actually spinning, beyond the point of the clutch, you either have pressure and thus no leak (or minute leak if recently regassed, so that pressure still hasn't dropped below the point of the switch. You should have cool air, barring some internal compressor fault beyond me.
Or the switch has failed in a way that causes the system to think there's pressure, so it engages the clutch and spins the compressor anyway. I'm not sure, but I believe that'd be bad for the compressor (the very reason the switch is there in the first place...)
Might be that someone somewhere could pull the compressor and test it outside the car, but for in car testing I believe the following is what's prescribed:
Step 1: check for sealed system (draw a vacuum and see that it holds) or pressurize with say nitrogen and see that it holds. Pressurisation with dye added would be step 1.5, in order to locate the leak(s) in case of vacuum or pressure not holding, but any decent AC tech would know their way about this.
Step 2: If leaking - [try to] fix the leaks then goto step 1...
Step 3: once the system holds pressure, refill with coolant gas.
Step 4: Check that the pressure switch is working (actually probably want to have measured it before and after/during pressure testing, so that a faulty switch could be replaced before the actual refill)
Step 5: Check that the clutch engages and compressor spins.
If it still doesn't make cool air, it's probably internal to the compressor and beyond me...
#61: Re: Got Air conditioning Re-gassed but still no cold air? Author: Hillsy81, Posted: Thu Jun 09, 2016 1:04 pm ---- I'm currently at this last stage with my 2005 Gti 180.
A/C was serviced, vac/pressure tested fine, full recharge.
System clicks when you turn on A/C and it does briefly cool the air before returning to normal. I seemed to get a bit better results when I turned the fan speed down from full speed - logic dictated that the longer the air spent in the cooling system the cooler it should be.
When they purged the system it only had 20g in it apparently, and the refill took 700g - so no wonder it wasn't doing anything. My concern now is that if the system has been empty for some time and has been run anyway, the compressor may have been damaged.
You can understand my reluctance to take it to an expensive specialist with what could be an intermittent fault!!
Cambelt has been changed recently, only 48k on the clock - as far as I understand it there's only one belt which drives everything so I think its safe to rule that out. There really isn't too much more that it could be other than the compressor is there?
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