#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...
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