jazz
New Member
Posts: 54
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Post by jazz on Jul 13, 2018 20:05:36 GMT 1
I had my Air Con re-charged yesterday by ATS Tyres. The A/C was working although it was warmer than it should be, last time it was recharged around three years ago the cooling was icy cold. After ATS had carried out the work there was not much difference it was cold but not icy cold. I checked the temp with a thermometer through the central vent with the A/C on full and it was 60F according to instructions the temperature should be around 45F if the system is working as it should be.
I am not sure on whether to take the car back to ATS, what do you guys think? or perhaps there is something else that could be causing the system to be running warmer than it should?
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remmington
Apprentice
Owns Spark Eroder
Posts: 4,974
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Post by remmington on Jul 13, 2018 20:19:37 GMT 1
Gas is expensive at the moment - maybe they did not give you the full fill?
How much did they charge you?
Maybe you should be looking for an independent specialist not a chain (tyre bay).
ATS sell tyres - do they not?
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jazz
New Member
Posts: 54
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Post by jazz on Jul 13, 2018 20:28:34 GMT 1
Charged £34 because there was an offer on. ATS used to be tyres only, but they now do a bit of everything like Kwik Fit does. Looks like ATS maybe very similar to Kwik Fit and offer a poor quality of service. You are probably right I should have gone to an independent specialist instead.
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Post by chippie on Jul 13, 2018 20:39:32 GMT 1
There is more to an a/c system than just gas.... Start with the basics....there's gas .....is it the right type? Then the system itself, a/c compressor, and heat exchangers.... Maybe the heat exchangers are not as efficient s they were when new...( fouled maybe?) Or the compressor....not working as efficient...they do wear....
Maybe you should have gone to the dealers!
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Post by upkeep on Jul 13, 2018 20:40:55 GMT 1
What vehicle and did you get a print out of the work carried out and amount of gas recovered and fill amount, have seen vehicles with poor A/C after being overfilled. As said go to a good independent garage.
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Post by studabear on Jul 14, 2018 20:46:14 GMT 1
Charged £34 because there was an offer on. ATS used to be tyres only, but they now do a bit of everything like Kwik Fit does. Looks like ATS maybe very similar to Kwik Fit and offer a poor quality of service. You are probably right I should have gone to an independent specialist instead. How long did the work take to complete?
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Deleted
Deleted Member
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Post by Deleted on Jul 15, 2018 0:40:01 GMT 1
Gas is expensive at the moment - maybe they did not give you the full fill? How much did they charge you? Maybe you should be looking for an independent specialist not a chain (tyre bay). ATS sell tyres - do they not? They sell cheap re-gas services too
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Post by minimatt on Jul 16, 2018 13:04:04 GMT 1
Just out of intrest what should the tempreture be roughly at the vents for a good system, i appreciate it varies from car to car but what sort of average? My mini i measured at just over 10 degrees and still (very slowly ) dropping and my old vw i think was about 7ish.
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Post by chippie on Jul 16, 2018 13:30:44 GMT 1
'Cold temperature' depends on initial air source temperature and system efficiency.... Karlb did give a figure for Ford cars except I cant remember......if you are getting down to 10C then I say thats good.....
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remmington
Apprentice
Owns Spark Eroder
Posts: 4,974
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Post by remmington on Jul 16, 2018 13:50:37 GMT 1
'Cold temperature' depends on initial air source temperature and system efficiency.... Karlb did give a figure for Ford cars except I cant remember......if you are getting down to 10C then I say thats good..... 10C is good... As quoted and air con system can only remove so much heat (energy). So the colder the air going in - the colder the air coming out.
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Post by givusaclue on Jul 16, 2018 16:12:06 GMT 1
when i did a hella a/c course in the "dark ages" a functioning ac system was expected to reduce the temp by about 8 degrees in the cabin on flat out & set to recirculate vs. outside temp.
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remmington
Apprentice
Owns Spark Eroder
Posts: 4,974
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Post by remmington on Jul 16, 2018 18:29:33 GMT 1
when i did a hella a/c course in the "dark ages" a functioning ac system was expected to reduce the temp by about 8 degrees in the cabin on flat out & set to recirculate vs. outside temp. "set to recirculate" very valid point from givusaclue....I have done the City and Guilds F-gas course - but I am old and can't remember anything much of late...
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Post by Karl on Jul 16, 2018 18:42:53 GMT 1
Like said actual vent / cabin temperature will vary with ambient temperature
For warranty work looking for a minimum of 8 degrees drop at vent after about 5 minutes
One thing to watch on your machines are the static rest pressures which increase with outside temperature
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oli
Apprentice
Posts: 1,065
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Post by oli on Aug 7, 2018 22:14:30 GMT 1
I've fallen into the same trap - gassed up both our minis (which seem to be holding pressure) but no improvement. I think at least one of them has a non-functioning compressor. Rather than expend my energy on them, I think I'm just going to pull my finger out and repair the tailgate so I can go soft top on the Land Rover!
Oli
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dave
Tea Maker
Posts: 702
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Post by dave on Aug 7, 2018 22:30:31 GMT 1
If the ignition is on and you turn on ac you should hear it click If you dont it's possible the compressor is not engaging the magnetic clutch This can happen for several reasons One being not enough gas and the safety cutting the power
Several reasons for poor performance Dust build up on the system easy fix is giving the condenser and heat exchanger a good cleaning with compressed air (this can significantly improve efficiency) Low gas pressure or poor filling (to much or little or wrong gas) This requires a professional Clogged cabin filter This is easy to diagnose as the flow will drasticly increase when switched to interior circulation
One last point I have come across is blocked drainage tube so the condense from the heat exchanger builds up in the unit and this mixed with dust creates mud build up blocking the exchanger to a point it completely freezes shut
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