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gilliambot
Newbie


Joined: 21 May 2016
Posts: 11
Location: Surrey / London


PostPosted: Wed Jun 08, 2016 7:57 pm    Post subject: 993 air con repair Reply with quote

So, I have had my 993 for about a week, its glorious. Although the oil temp gauge confuses and (hopefully) needlessly worries me, the only other issue is completely caput air conditioning- something I knew when I bought it. Does anybody know what sort of price I should be expecting to pay to get it fixed. I assume it will involve a complete overhaul.
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Dream911
Indianapolis


Joined: 24 Dec 2008
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Location: London


PostPosted: Wed Jun 08, 2016 8:35 pm    Post subject: Reply with quote

It depends what's wrong.

Best case would be a £50 regas.

Quite likely to be the condenser and receiver/dryer, ballast resistor replacement. Budget £500 to buy the parts, fit and regas if done professionally.

If its evaporator then suddenly it's a £1000 or more.

Get a professional to check it over and you'll have a better idea of what's it's going to cost.
 
  
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jonttt
Shanghai


Joined: 20 Aug 2012
Posts: 4908
Location: Liverpool


PostPosted: Wed Jun 08, 2016 9:24 pm    Post subject: Reply with quote

Evaporator is more than £1000, the part is cheap but involves a full strip down to bulkhead to get at it so labour hours are high. That's why most check the condenser and ballast first as relatively easy to get at. Usually never just a regass or the previous owner would have done it for sale. Ps Halford used to check for free but usually takes a few days to leak so hold pressure and works at first but they would refund if returned in a few days, check if that's still the case Dont know
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stevewak
Spa-Francorchamps


Joined: 08 Jun 2013
Posts: 362
Location: UK


PostPosted: Wed Jun 08, 2016 9:43 pm    Post subject: Reply with quote

Go to a good indie and they will give you an honest appraisal of the car. Could be anything and might be fixed for a couple of hundred quid. You need to find the leak. Chances are something else might go wrong - it's that sort of thing.

Mine currently at JAZ having new A/C compressor fitted....
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Zingari
Donnington
Donnington


Joined: 25 Oct 2009
Posts: 12476
Location: Cheshire

1993 Porsche 964 Anniversary

PostPosted: Wed Jun 08, 2016 10:12 pm    Post subject: Reply with quote

Changing the evaporator aint complicated its just very time consuming. I have heard some can get it out without removing the fuel tank completely Surprised

All evaporators will fail at some point and if original will be most likely nowhere near as efficient as they should be. I started with the easy option of changing the condensor and receiver/dryer before admitting defeat and getting the evaporator swapped nooo
The annoying thing is the part is c£70 but 10hrs of labour aint PC

You can DIY if you feel lucky: http://p-car.com/diy/ac/
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madalaa
Fuji


Joined: 13 Mar 2008
Posts: 9297
Location: West London

2009 Porsche Boxster (987)

PostPosted: Thu Jun 09, 2016 6:38 am    Post subject: Reply with quote

Old cars with old air conditioning can be problematic and they can be expensive to repair ....... good luck ........ I hope it doesn't squeeze your wallet too much.
 
  
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gunner
Hockenheim


Joined: 04 Jul 2014
Posts: 676
Location: Kent


PostPosted: Thu Jun 09, 2016 7:59 am    Post subject: Reply with quote

I had the same situation, knew the aircon was patchy (at best) when I bought it. Happy to use the sunroof unless it's raining...

So far I've ignored it but will probably have it investigated when it goes in for a service this year.
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ballcock
Sepang


Joined: 21 Jul 2008
Posts: 2853
Location: Dublin

1996 Porsche 993 Carrera 2

PostPosted: Thu Jun 09, 2016 8:18 am    Post subject: Reply with quote

I ignored my knackered AC for 9 years Embarassed
A few months ago I bit the bullet and stated with a mobile re-gas guy, who did a leak test and found the condenser was to blame.
New condenser plus receiver installed, re-gas, has been working away since.
Cost less than €600 all in.
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madalaa
Fuji


Joined: 13 Mar 2008
Posts: 9297
Location: West London

2009 Porsche Boxster (987)

PostPosted: Thu Jun 09, 2016 9:05 am    Post subject: Reply with quote

That seems a very decent price Barny ........ Smile
 
  
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ColinC
Österreich


Joined: 16 May 2013
Posts: 978
Location: Sunny Central Scotland


PostPosted: Thu Jun 09, 2016 9:07 am    Post subject: Reply with quote

Its so easy to carried away with these cars - my aircon was poor, read all the threads went out and bought evaporators, condensers, o- rings, seals for the compressor inlet/outlet, new belts etc. Got a regass at Kwik - Fit (mixed reviews but the Glasgow depot seemed fine once I pointed out where the connection points were) and subsequently a leak was found in the cooling pipe under the passenger sill. Replaced it and it blew cooler - off course I replaced all the other bits I purchased over time and it blew a bit cooler with the only 'piece' left to replace being the fuel tank removal part!

I can live with cold air as opposed to modern chilled air but the moral of the story is start with a regas and replace what is obviously faulty....
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Zingari
Donnington
Donnington


Joined: 25 Oct 2009
Posts: 12476
Location: Cheshire

1993 Porsche 964 Anniversary

PostPosted: Thu Jun 09, 2016 10:41 am    Post subject: Reply with quote

madalaa wrote:
That seems a very decent price Barny ........ Smile


Saves taking off the donkey jacket in summer. To be sure Thumb
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ballcock
Sepang


Joined: 21 Jul 2008
Posts: 2853
Location: Dublin

1996 Porsche 993 Carrera 2

PostPosted: Thu Jun 09, 2016 12:51 pm    Post subject: Reply with quote

Zingari wrote:
madalaa wrote:
That seems a very decent price Barny ........ Smile


Saves taking off the donkey jacket in summer. To be sure Thumb


When it's on full cold , I have two extra donkey jacket hangers Whistling
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Mike-M
Spa-Francorchamps


Joined: 28 Jan 2010
Posts: 255



PostPosted: Thu Jun 09, 2016 7:05 pm    Post subject: Reply with quote

ColinC wrote:
Its so easy to carried away with these cars - my aircon was poor, read all the threads went out and bought evaporators, condensers, o- rings, seals for the compressor inlet/outlet, new belts etc. Got a regass at Kwik - Fit (mixed reviews but the Glasgow depot seemed fine once I pointed out where the connection points were) and subsequently a leak was found in the cooling pipe under the passenger sill. Replaced it and it blew cooler - off course I replaced all the other bits I purchased over time and it blew a bit cooler with the only 'piece' left to replace being the fuel tank removal part!

I can live with cold air as opposed to modern chilled air but the moral of the story is start with a regas and replace what is obviously faulty....


I think the pipe issue in the sill is on early cars, the rubber bracket that holds it in this location had a design fault which caused the support to rub a hole in the pipe. Worst part being when they run a vaccum test, mine did not lose pressure as it pulled the rubber hanger tight against the hole, in turn sealing the leak! I believe the part was re-designed. I replaced just about the whole of the AC system and although the Condensor needed replacing Im not sure much else did as the main culprate was the pipe in the sill, which ironically is quite a cheap fix!
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LondonRob
Spa-Francorchamps


Joined: 11 Mar 2013
Posts: 315
Location: West London


PostPosted: Thu Jun 09, 2016 8:07 pm    Post subject: Reply with quote

Mike-M wrote:
I think the pipe issue in the sill is on early cars, the rubber bracket that holds it in this location had a design fault which caused the support to rub a hole in the pipe. Worst part being when they run a vaccum test, mine did not lose pressure as it pulled the rubber hanger tight against the hole, in turn sealing the leak! I believe the part was re-designed. I replaced just about the whole of the AC system and although the Condensor needed replacing Im not sure much else did as the main culprate was the pipe in the sill, which ironically is quite a cheap fix!


They may have redesigned it but my July 97 car still had the same problem. Pretty easy to pop off the passenger side sill cover and take a look yourself to see if there's any sign of leakage. I could see dye on mine. I tried disconnect the leaking pipe but the soft alloy that the pipes are made of was now welded solid to the connection and wouldn't shift.

I'm not sure where the OP is located but Alpinair at Hanger Lane/Alperton cut the offending leaking piece out and welded new length of pipe in for me and were pretty reasonable. AC has been working fine since for the last year and still very efficient. Problem is that you could fix the leak and then find a weakness somewhere else in the circuit I suppose....

Alpinair had a few Porsches in when I was there - I think they may subcontract to an OPC or big indie.
 
  
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Pretzel
Hockenheim


Joined: 20 Apr 2014
Posts: 670
Location: Bedfordshire


PostPosted: Fri Jun 10, 2016 10:29 pm    Post subject: Reply with quote

LondonRob wrote:
Mike-M wrote:
I think the pipe issue in the sill is on early cars, the rubber bracket that holds it in this location had a design fault which caused the support to rub a hole in the pipe. Worst part being when they run a vaccum test, mine did not lose pressure as it pulled the rubber hanger tight against the hole, in turn sealing the leak! I believe the part was re-designed. I replaced just about the whole of the AC system and although the Condensor needed replacing Im not sure much else did as the main culprate was the pipe in the sill, which ironically is quite a cheap fix!


They may have redesigned it but my July 97 car still had the same problem. Pretty easy to pop off the passenger side sill cover and take a look yourself to see if there's any sign of leakage. I could see dye on mine. I tried disconnect the leaking pipe but the soft alloy that the pipes are made of was now welded solid to the connection and wouldn't shift.


Does anyone have a link to the Technical Bulletin for the air-con pipes in the sill? I have the sill cover off but can't work out how to get the rubber support out to inspect the pipes.
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stevewak
Spa-Francorchamps


Joined: 08 Jun 2013
Posts: 362
Location: UK


PostPosted: Mon Jun 13, 2016 10:00 am    Post subject: Reply with quote

Update: Car back from JAZ with exchange a/c compressor (£450 + VAT ) labour and re-gas (£115+ VAT). All good. Technician explained condenser would need doing "in a couple of years" and that he "can't remember doing an evaporator". I'm happy - nice cool dry air.
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Oilline
Silverstone


Joined: 20 Jun 2009
Posts: 113
Location: Skipton, North Yorkshire


PostPosted: Mon Jun 13, 2016 5:14 pm    Post subject: Reply with quote

Got mine booked in for a new evaporator on the 27th June at Revolution Porsche. I've been quoted £650 + VAT including expansion valve. Hope this cures it, I changed everything else myself last year but still had a sweaty trip down to Angouleme. Hope to be cool this year !
 
  
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Oilline
Silverstone


Joined: 20 Jun 2009
Posts: 113
Location: Skipton, North Yorkshire


PostPosted: Mon Jun 13, 2016 6:11 pm    Post subject: Reply with quote

Got mine booked in for a new evaporator on the 27th June at Revolution Porsche. I've been quoted £650 + VAT including expansion valve. Hope this cures it, I changed everything else myself last year but still had a sweaty trip down to Angouleme. Hope to be cool this year !
 
  
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jonttt
Shanghai


Joined: 20 Aug 2012
Posts: 4908
Location: Liverpool


PostPosted: Mon Jun 13, 2016 7:22 pm    Post subject: Reply with quote

Oilline wrote:
Got mine booked in for a new evaporator on the 27th June at Revolution Porsche. I've been quoted £650 + VAT including expansion valve. Hope this cures it, I changed everything else myself last year but still had a sweaty trip down to Angouleme. Hope to be cool this year !


That sounds remarkably cheap for an evaporator, are you sure you don't mean new condenser fitted Dont know
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1997 Porsche 911 993 C4S My Journal
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jonttt
Shanghai


Joined: 20 Aug 2012
Posts: 4908
Location: Liverpool


PostPosted: Mon Jun 13, 2016 7:23 pm    Post subject: Reply with quote

stevewak wrote:
Update: Car back from JAZ with exchange a/c compressor (£450 + VAT ) labour and re-gas (£115+ VAT). All good. Technician explained condenser would need doing "in a couple of years" and that he "can't remember doing an evaporator". I'm happy - nice cool dry air.


Give it a few days before you get too excited lol Hand
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