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Author Topic: AC suddenly stopped working  (Read 2140 times)

Offline paulfoel

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AC suddenly stopped working
« on: May 23, 2018, 07:32:17 pm »
OK its intermittent. WOrks for half hour then stops, works again.

Took it to halfords autocenre (yeh I know). They said its showing 0 on their machine so must be empty. Umm - how does it work sometimes then?

Any ideas?

Offline johnnyroper

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Re: AC suddenly stopped working
« Reply #1 on: May 23, 2018, 07:36:34 pm »
I would take it somewhere else and have it looked at Again,the refrigerant level needs to be confirmed as correct before looking any further.

Offline johnnyroper

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Re: AC suddenly stopped working
« Reply #2 on: May 23, 2018, 07:38:21 pm »
It’s worth a look under the cap on side of condenser where receiver drier lives as that is a favourite place to leak.

Offline paulfoel

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Re: AC suddenly stopped working
« Reply #3 on: May 28, 2018, 10:28:38 pm »
Halfords are a bunch of idiots. Took it back there. Told me they'd managed to sort it, refilled it etc.

Umm yes but they didnt even check it worked - it didn't

Offline brianh

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Re: AC suddenly stopped working
« Reply #4 on: May 30, 2018, 09:28:21 pm »
I'd take it somewhere else unless you've already paid them. You need to see them empty the system, see how much comes out, and see what they put back in. This should take a minimum of half an hour.

If the refrigerant is OK then you may have an electrical issue - either a compressor playing up, or the electrical feed to it or the pressure switches being possible. But until you know how much is in there (there has to be enough to actually register on the pressure switch for it to actually engage the compressor) you don't know where your starting from.

It may be that you have just enough for it to work some of the time (the pressure will vary depending on temperature etc) and it just needs a regas (though this indicates there may be a slight leak somewhere).

I'd seriously take it somewhere else - You may be able to find someone mobile to come to you if thats easier. The previous brand (national I think?) weren't too well regarded, and given most of them are just a rebrand (with the same staff) I doubt its any better.

Kwik fit usually do a regas and no charge if it doesn't fix the A/C

Offline brianh

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Re: AC suddenly stopped working
« Reply #5 on: May 30, 2018, 09:29:43 pm »
Also if you ask if there is a leak then they should put bright yellow dye in with the oil, so you can see where its leaking from. (they should do this anyway, but not all places will do and will skimp on the dye in some of them)

Offline paulfoel

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Re: AC suddenly stopped working
« Reply #6 on: June 05, 2018, 08:56:34 am »
Compressor buggered....

Jeez. £500 fitted - seems a bit steep.

Although I guess it all needs to be re-filled afterwards?

Worth getting hold of 2nd hand one from scrapyard? Or are there too many different versions?

Offline johnnyroper

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Re: AC suddenly stopped working
« Reply #7 on: June 05, 2018, 09:38:06 am »
On @Mirez he might have one as he breaks these cars.

Offline brianh

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Re: AC suddenly stopped working
« Reply #8 on: June 05, 2018, 10:20:10 am »
Compressor buggered....

Jeez. £500 fitted - seems a bit steep.

Although I guess it all needs to be re-filled afterwards?

Worth getting hold of 2nd hand one from scrapyard? Or are there too many different versions?

Taking the compressor out would involve removing the gas/replacing it as part of the job. The biggest bit of the expense would be the actual cost of the bits, if you have a look at eurocarparts that would give you an idea of the price of the compressor by itself.

Second hand one depends if your intending to fit yourself, or get the garage to fit it. You'd best ask them first if they will fit a used one?

Offline paulfoel

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Re: AC suddenly stopped working
« Reply #9 on: June 05, 2018, 11:38:17 am »
Taking the compressor out would involve removing the gas/replacing it as part of the job. The biggest bit of the expense would be the actual cost of the bits, if you have a look at eurocarparts that would give you an idea of the price of the compressor by itself.

Second hand one depends if your intending to fit yourself, or get the garage to fit it. You'd best ask them first if they will fit a used one?

Thanks for the info. Yes not cheap it seems - found one for approx £340 new (£550 on eurocarparts). Also, as you say theres the refilling etc so £500 doesnt seem too bad.

Yes thats just it - I wouldnt do myself. Not sure if my AC guy would do 2nd hand? Of course, then theres the issue of ensuring you've got the right one etc (there seem to be a few types)  checking its in decent condition etc.

Might save £150 or so with 2nd hand but not so sure.

Offline brianh

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Re: AC suddenly stopped working
« Reply #10 on: June 05, 2018, 02:33:14 pm »
He wouldn't be paying the £550 obviously, but its about what I'd expect really for the price you quoted. Have they done a full purge of the system (this should prove there are no leaks etc)?

If he is willing to give you a guarantee that it will then work (which your only likely to get with a new compressor) then I don't think you will do much better. Its likely he would also be looking to replace the dryer at the same time (as it could be full of bits of failed compressor, moisture etc and is a consumable part).

It would look cheap compared to the price a Ford dealer would quote you I'm sure of that.

Offline johnnyroper

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Re: AC suddenly stopped working
« Reply #11 on: June 05, 2018, 06:05:41 pm »
Just a thought is it the clutch that’s failed? If so you can get them in their own.

Offline johnnyroper

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Offline Mirez

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Re: AC suddenly stopped working
« Reply #13 on: June 05, 2018, 09:05:49 pm »
I do have a Mk3 one, open to offers!
03 Ford Galaxy 1.9 TDI 115 Ghia in Spruce Green Metallic
With cream leather interior, Full Bodykit, Remapped at 145bhp, Lowered on 18's
08 Ford Transit 2.2 TDI 115 in Frozen White
With retrofitted everything except another slidey door! :)

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Offline brianh

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Re: AC suddenly stopped working
« Reply #14 on: June 05, 2018, 10:04:09 pm »
I think personally I'd want a second opinion on the compressor unless he can show you some evidence of it definitely being the cause. Where did you take it in the end?

Offline johnnyroper

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Offline paulfoel

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Re: AC suddenly stopped working
« Reply #16 on: June 06, 2018, 10:08:51 am »
He wouldn't be paying the £550 obviously, but its about what I'd expect really for the price you quoted. Have they done a full purge of the system (this should prove there are no leaks etc)?

If he is willing to give you a guarantee that it will then work (which your only likely to get with a new compressor) then I don't think you will do much better. Its likely he would also be looking to replace the dryer at the same time (as it could be full of bits of failed compressor, moisture etc and is a consumable part).

It would look cheap compared to the price a Ford dealer would quote you I'm sure of that.

I would certasinly hope so. I wont be happy to spend £500 and it still not work.

Offline paulfoel

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Re: AC suddenly stopped working
« Reply #17 on: June 06, 2018, 10:09:14 am »
Just a thought is it the clutch that’s failed? If so you can get them in their own.

Dunno. Just said "compressor"

Offline paulfoel

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Re: AC suddenly stopped working
« Reply #18 on: June 06, 2018, 10:11:26 am »
I think personally I'd want a second opinion on the compressor unless he can show you some evidence of it definitely being the cause. Where did you take it in the end?

Mobile AC specialist guy. Used him before previously and he knows his stuff, has had v good reviews, and seems like a decent fella.

Like I said, he has guaranteed a new compressor is in order and that will fix. I guess the proof is in the pudding - if it works afterwards then job done. If it doesnt work then I will certainly be wanting to know why I just paid £500 for something that may not even be faulty.

Offline brianh

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Re: AC suddenly stopped working
« Reply #19 on: June 07, 2018, 01:55:03 am »
Mobile AC specialist guy. Used him before previously and he knows his stuff, has had v good reviews, and seems like a decent fella.

Like I said, he has guaranteed a new compressor is in order and that will fix. I guess the proof is in the pudding - if it works afterwards then job done. If it doesnt work then I will certainly be wanting to know why I just paid £500 for something that may not even be faulty.

Well that sounds more promising than taking it elsewhere at least its a specailist telling you whats wrong now. If thats all in then I can't imagine your going to do much better, provided the rest of the system isn't leaking there isn't much else to go wrong with it anyway, its usually leaks, sensor faults or a fault with the compressor as the rest is just pipework.

Offline paulfoel

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Re: AC suddenly stopped working
« Reply #20 on: June 07, 2018, 08:36:37 am »
Well that sounds more promising than taking it elsewhere at least its a specailist telling you whats wrong now. If thats all in then I can't imagine your going to do much better, provided the rest of the system isn't leaking there isn't much else to go wrong with it anyway, its usually leaks, sensor faults or a fault with the compressor as the rest is just pipework.

Yes at least it'll get fixed. I guess its just that the parts are so expensive with AC.

Offline brianh

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Re: AC suddenly stopped working
« Reply #21 on: June 10, 2018, 07:24:30 pm »
Yes at least it'll get fixed. I guess its just that the parts are so expensive with AC.

Especially this time of year, the gas isn't cheap either.

Offline paulfoel

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Re: AC suddenly stopped working
« Reply #22 on: July 23, 2018, 03:15:58 pm »
Well I had the compressor done and its blowing cold air now.

Trouble is, especially if car is left in the sun or its particularly hot, it struggles to cope. Can be 10-15 minutes before car has cooled down.

Comparing to my mrs fiat when she turns the blowers on full tilt with AC they blow really hard and its cool immediately. My blowers are much less powerful so  I'm wondering if this is the issue now - i.e. AC working but blowers not blowing air hard enough.

Offline brianh

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Re: AC suddenly stopped working
« Reply #23 on: July 23, 2018, 05:55:57 pm »
Had your pollen filter changed recently? Is it any better on recirc if the mk3 has that?

Offline gregers

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Re: AC suddenly stopped working
« Reply #24 on: July 25, 2018, 10:20:07 pm »
theres a lot of glass which makes it an oven,my smax was never as good as my mk2 gal,and the mk1s with aircon were exelent,like stepping into a freezer.
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Offline Stan Stockdale

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Re: AC suddenly stopped working
« Reply #25 on: August 01, 2018, 01:56:54 pm »
years ago when I was in the trade, you could fool the compressor clutch by jumping the relay and low pressure switch just to see if it activated,
if there is enough Freon it should click without the low pressure being jumped if it only clicks when low pressure is jumped its a leak
or faulty switch
anyone know what and where the relay is and what pins to jump

Offline johnnyroper

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Re: AC suddenly stopped working
« Reply #26 on: August 01, 2018, 05:17:25 pm »
These days it’s easier to plug diagnostics in as it will log a L/P or H/P fault if refrigerant level too low or high along with other fault codes to point you in right direction.

Offline mike wilson

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Re: AC suddenly stopped working
« Reply #27 on: August 03, 2018, 12:38:03 pm »
years ago when I was in the trade, you could fool the compressor clutch by jumping the relay and low pressure switch just to see if it activated,
if there is enough Freon it should click without the low pressure being jumped if it only clicks when low pressure is jumped its a leak
or faulty switch
anyone know what and where the relay is and what pins to jump

It usually tells you on the fuse box lid.  There would be a schematic on the relay to show you which pins carry the load.  I did this yesterday on my non-functional a/c and the fan kicked in, so I was ahppy that there was still gas - but there was no cold air, so I'm thoroughly confused now.

Known issue on Fords of corrosion on a wire from the fan management unit (bolted on to the back of the fan) to the BCM.  Purple/mauve wire corrodes and stops the fan running.  No fan - no a/c.

Here's the workshop manual diagnostic for the MkIV Mondeo.  Might be at least similar to the Galaxy.  Note the self test section at the beginning.

https://workshop-manuals.com/ford/mondeo_2007.5_02.2007/mechanical_repairs/4_electrical/412_climate_control_system/412-00_climate_control_system_general_information/diagnosis_and_testing/climate_control_system/

Offline johnnyroper

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Re: AC suddenly stopped working
« Reply #28 on: August 03, 2018, 03:11:23 pm »
by linking relay you are not proving there is refrigerant in system though as the low and high pressure switches feed the relay,linking relay out will allow compressor to run even if system is empty.

Also even if fan doesn’t run air con will still work initially until it condenser gets too hot and trips out on high pressure

Offline JADMezzo

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Re: AC suddenly stopped working
« Reply #29 on: November 05, 2018, 10:54:13 pm »
I had a similar intermittent and then permanent problem with AC on an SMax. My money is on the purple control wire. Strip back the loom, find and fix the break in the purple wire and bingo. It worked for me after months of back and forth and lots of wasted cash.

 

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