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Aircon regas?

Hairyarse

Hairyarse

New member
Apologies in advance as I'm sure this topic has been done to death here but can't seem to find the answer in a search, so.....!

My Turbo's aircon system all seems to work, although it wont blow cold so I assume it needs re-gassing. Based on the second assumption that it was originally filled with some old type, CFC-full refrigerant I make a third assumption that my solution isn't as simple as just getting the system re-gassed as it won't work on the current stuff?

I know you should never assume, so you see my predicament! Any tips on exactly what I need to do please from anyone that's done it? I wasn't too fussed about the aircon working but it's damn hot right now! [:D]

Thanks in advance

Andy
 
Actually it is reasonably inexpensive to convert to the new "green" refrigerants. The compressor is OK with new stuff so you just need to do is have the system evacuated (suck out all the old stuff), change the receiver-dryer and a few fittings and have it recharged with new.

The trouble of course is why is your existing system is no longer working. Most commonly is the compressor seal is gone and your refrigerant has leaked out. This is the problem with my S2. The previous owner converted the AC and 3.5 yrs later - its not blowing cold air anymore. You should have it checked out tho as it may be a more complex problem.

If it is a compressor seal, rebuild kits can be obtained from Griffiths for under C$100, new receiver-dryer is under C$30, there are videos on the web about how to rebuild the compressor. Around here, a recharge runs about C$225.
 
Leaks can come from a number of places - an a/c specialist should be able to trace most of them.

One problem is that the lines themselves can leak - the rubber sections seem to become porous over time, and the newer refrigerants seem to be more leak prone (smaller molecules?)
I had my turbo fixed by chopping out the standard lines, keeping the ends & connecting to new flexible a/c hose.

Cool-it in Devon were always regarded as the experts in 944 a/c, although I don't think there's anything special about the system.
 

ORIGINAL: A9XXC

Talk to Rob....
Click to expand...

Thanks for the tips guys

I did Mike! He did give some advice on the new gas, plus confirmed the basics of there's a reason there's no gas in there to start with! I guess now just trying to work out where to start
 
I'd say check for damage on the condenser and pipes if nothing obvious a leak check and go from there but I'd expect that is just what you're planning on. I know some years ago when my compressor leaked on a 944 turbo that the OPC quoted £1300 for a new compressor but now everything has them they were rare then and now you can get spare parts.
 
Condensor will need changed, it is worth splitting all the system pipes and replacing all the sealing O rings on them, there are not that many thankfully. If you're compressor has not been used in a while, it is worth overhauling and cleaning up the clutch. The compressor clutch will not engage until there is pressure in the system.
Alasdair
 
That guy I said in St Noets mate will fill it with a drop in replacement for the original gas and he has the now obselete to most connectors. If you want to convert to r134a then you will as a minimum need to change the compressor and receiver dryer. You should change the expansion valve but even many specialists don't do this as it is buried behind the dash. Fill it for fifty quid and take a punt I say. I did and I was cool for a year at least. After that year at least the brand new dye told me I needed a new compressor. I got a reman ready for r134a from the states for less than £300 without core exchange and he even shipped it as used automotive parts with a dollar value of less than $10 [;)]
 
Fair do's Rob, when you mentioned the guy I thought he did the gas only but if he can turn his hand to other things then worth a bash!

Had found these guys on google search, didn't know if worth trying as local? - http://www.airtekuk.com/
 
No he is a specialist mate. That is all he does. He will pull or at least try to pull a vacuum on it and if he can't then he won't even try to fill it. There would be no point as with no vacuum he wouldn't egt the gas in there. He will however only do what you pay for. If you want a regas he will do it if he can. If you want a tear out and refurb he can do that also.
 
Interestingly, I was looking at the specs of various gasses the other day and discovered that both Propane and Butane would make excellent refrigerants for an air-con system. They are cheap and plentiful as well ... although the downsides are fairly obvious!


Oli.
 
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