A/C Freon and conversion advice - Defender Source
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  #1  
Old August 12th, 2014, 03:13 AM
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David
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A/C Freon and conversion advice

This weekend I went to the mountains and it got hot and toasty inside my cab. It was bearable until I was following 2 Jeeps and had to suck in all their dust.

Now back at home and knowing my 95 NAS has dealer installed A/C I wanted to get some details about it and see what it would take to get it up and running again.

I assume I will need a new charcoal filter, but what about converting to newer coolant? I did some searches and I figured I was searching under the wrong words.... or its not possible as everyone else knows so. I found one thread about how to diagnose A/C issues, but thats it.

Also, if I do get the A/C back on line, any tips/suggestions that make the deal installed A/C better?
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  #2  
Old August 12th, 2014, 06:45 AM
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Bill Adams
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I am not sure you aren't already charged up with R-134a. If you still have the old Freon then you will have to take it somewhere to have the old stuff flushed and the new coolant put in.
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  #3  
Old August 12th, 2014, 07:21 AM
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A drop curtain would probably be a good idea to help it work better.

I would go get the a/c charged to start with so you can diagnose it from there.
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  #4  
Old August 12th, 2014, 07:43 AM
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Check the fuse and recharge it, see if the compressor begins to spin. If it does and it's warm a few days later it's warm or the compressor stops, then it's time for dye for leak diagnosis. Search R-134a here and you should find more threads.
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  #5  
Old August 12th, 2014, 12:14 PM
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Thanks all! It's in the shop today.
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  #6  
Old August 12th, 2014, 04:33 PM
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Quote:
Originally Posted by petminded View Post
Thanks all! It's in the shop today.
Refrigeration technician here:

Just for the hell of it, give us a report on what they did and what they charged you.

Thanks!
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  #7  
Old August 12th, 2014, 05:06 PM
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Will do. Keep in mind that here is So California the going rate for labor is 100 to 120 an hr.
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Old August 12th, 2014, 05:29 PM
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Same here in NY unless you go to Billy Bob's Auto.
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  #9  
Old August 12th, 2014, 06:49 PM
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Quote:
Originally Posted by DannyboyUpstate View Post
Refrigeration technician here:
Automotive?

FWIW, at the dealer we charge 1.5 hours labour to evacuate, recharge, and find leaks in a/c systems.
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  #10  
Old August 12th, 2014, 07:25 PM
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David
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Does anyone know for sure if the 1995 deal option a/c has r12 or the r134a?
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  #11  
Old August 12th, 2014, 08:13 PM
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Mine is R134A and is a dealer installed kit. There are multiple different versions of the a/c kits that were installed at the dealership. Mine is a Wynnes unit IIRC.
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Old August 12th, 2014, 08:15 PM
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That's right on the edge of the phaseout date. Could go either way.
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  #13  
Old August 12th, 2014, 08:21 PM
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David
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Should I be looking for a manufacturer name or something that would let me know one way or other? Or are the high/low stems a special size if it's one or the other?
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Old August 12th, 2014, 08:24 PM
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Can you post some pictures? The ports are different.
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  #15  
Old August 12th, 2014, 08:50 PM
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http://www.aa1car.com/library/ac_service_fittings.gif
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  #16  
Old August 13th, 2014, 04:03 AM
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David
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Thanks!

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It's r134....
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  #17  
Old September 14th, 2014, 12:03 AM
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David
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PS: it cost $69 to get my a/c working. All that was needed was the r134! And I am AMAZED as the a/c has not worked since 2002.
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  #18  
Old September 14th, 2014, 12:08 AM
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Freon isn't used up in ac, it's an energy carrier... If you need to recharge then you have a leak.
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  #19  
Old September 14th, 2014, 09:58 AM
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Quote:
Originally Posted by Arcadeus View Post
Freon isn't used up in ac, it's an energy carrier... If you need to recharge then you have a leak.
That is true, but sometimes the leak is so small just recharging it will do the trick. I recharged the a/c in my Disco in 2006 and it was still working when I sold the truck in 2012.
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  #20  
Old September 14th, 2014, 12:15 PM
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Also it can be pretty hard to find the leak if you don't charge it up first.
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