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Air con potential issue

Discussion in 'Motors' started by MooMoo444, 19 Jun 2016.

  1. MooMoo444

    Caporegime

    Joined: 4 Jul 2008

    Posts: 25,633

    Location: (''\(';.;')/'')

    Hi folks,

    Think my air con isn't running quite well as it should. What comes out of it isn't really all that cold, even on max. I know it's not because of the ambient temps because it was quite warm this morning :/

    I'm not convinced it just needs a re-gas as it was working fine midweek, but now it just doesn't seem to be there. I also wouldn't really want to risk paying for one only for it to do nothing or to leak away.

    When I google it, all I get is a million pages on re-gas and conditioning. Can I just nip to any garage and ask them to see if there is a fault anywhere with it or is this more a specialized part? I'm clueless on car maint.
     
  2. sovietspybob

    Mobster

    Joined: 25 May 2008

    Posts: 3,015

    Location: North Wales

    take it somewhere for a re-gas, the first thing the machine does is suck out any remaining gas and then it does a vacuum test, that'll tell you straight away if there's an issue as the machine won't let it put any gas into a system that has any leaks. They usually won't charge or charge very little as they can't actually re-gas the car if there's an issue.
     
  3. MooMoo444

    Caporegime

    Joined: 4 Jul 2008

    Posts: 25,633

    Location: (''\(';.;')/'')

    Alrighty!

    It's making odd noises now so I think the compressor might be struggling. Could be costly to replace :/
     
  4. Uriel

    Sgarrista

    Joined: 15 Jan 2006

    Posts: 7,652

    I had a compressor clutch die on my old Octavia. Metallic scraping noises aren't good.
     
  5. sneakypenguin

    Gangster

    Joined: 12 Mar 2005

    Posts: 469

    Location: Kings Norton, Birmingham

    Have a quick look at the condenser, especially the lower part that is more exposed than the rest. Mine did that, one day it was fine then came to use it and nothing, revs dipped and rose when I turned it on/off. Had a golf ball sized hole at the bottom of the condenser.

    SP
     
  6. iaind

    Capodecina

    Joined: 26 Feb 2009

    Posts: 14,814

    Location: Exeter

    I'd the compressor is engaging with a golf ball size hole in the condenser, there's something else wrong too. The system should never engage with no or low gas in it
     
  7. Fourstar

    Wise Guy

    Joined: 17 Oct 2002

    Posts: 2,042

    Location: London

    That would presumably depend on the make of car and whether they fitted the required detection/control system.

    MooMoo444, if the air doesn't come out cold turn the AC off! Most AC compressors will be damaged when run dry due them relying on lubricant mixed with the gas.

    I had similar symptoms to you. Fine one day, not working the next (as in compressor operating but no cold air). Turned out to be a perforated condenser.
     
  8. MooMoo444

    Caporegime

    Joined: 4 Jul 2008

    Posts: 25,633

    Location: (''\(';.;')/'')

    It's in the garage this afternoon, they're going to diagnose and get back to me. I turned the AC off once it started making the noises. It was like a mix between a faint whistle/blow and metal on metal. Not good in any case.

    Expecting a big bill but AC is one of the things I really appreciate the most in my car.
     
  9. iaind

    Capodecina

    Joined: 26 Feb 2009

    Posts: 14,814

    Location: Exeter

    I've never encountered a car without a pressure switch - it is possible for these to fail (normally resulting in the AC not working at all) or be bypassed. Hence saying there's be something else wrong in the system
     
  10. sneakypenguin

    Gangster

    Joined: 12 Mar 2005

    Posts: 469

    Location: Kings Norton, Birmingham

    That's one of the reasons I got rid of it, the £500 estimate didn't sit very well.
     
  11. Six6siX

    Mobster

    Joined: 25 Nov 2004

    Posts: 4,787

    Location: Hertfordshire

    Could metal on metal sounds could be compressor bearing?
     
  12. MooMoo444

    Caporegime

    Joined: 4 Jul 2008

    Posts: 25,633

    Location: (''\(';.;')/'')

    Garage done with it, hose had come loose or something, the explanation was lost on me really. They re-gassed it and we're blowing cold again for the moment. Better result than I expected :)