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Unread 06-17-2013, 08:24 PM   #16
MyJKU14
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I always buy shell since I have a gas card for them so that I think helps. I'll let you know what AAMCO says this week when I use their free AC assessment.

Thanks guys!!!!!!!

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Unread 06-18-2013, 05:15 AM   #17
Ted15
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There is a way to replace R12 with R134a. Their properties are pretty close but you should never mix refrigerants. Besides it being a bad idea, it's illeagle. You'll also need to change the oil, 134a won't carry mineral oil.
SOME of the recharge cans are ok, NOT the ones with stop leak. Make sure it has oil in it as well. Usually when refrigerant leaks it takes a little oil with it.
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Unread 06-27-2013, 08:18 AM   #18
LKWJEEPER
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Any update on this? My wife said my KK wasn't blowing really cold.. but only cool... I'll have to take it by the dealer and have them check it out.
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Unread 06-27-2013, 08:55 AM   #19
streetglideok
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If your vehicle is 3-5 years old, and the a/c has not been serviced, then chances are it is due. It's a fact of life with R134A, its smaller molecular structure lets it seep thru hoses that R12 wouldn't. Its also harder to detect without dye. Even with dye it can be hard, because a small leak may not allow dye to pass thru, just the gas. Over time, the charge gets less, and becomes contaminated with air, and moisture. These systems must be pure to cool correctly!
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Unread 06-27-2013, 09:00 AM   #20
tjkj2002
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Quote:
Originally Posted by Ted15 View Post
There is a way to replace R12 with R134a. Their properties are pretty close but you should never mix refrigerants. Besides it being a bad idea, it's illeagle. You'll also need to change the oil, 134a won't carry mineral oil.
SOME of the recharge cans are ok, NOT the ones with stop leak. Make sure it has oil in it as well. Usually when refrigerant leaks it takes a little oil with it.
R12 has not been used is like 20 years,heck R134A is going to be banned here soon.R134A is already banned in Europe,total ban by 2017 where you can not even service R134A in Europe.

Oh and by the way if your properly licensed you can get and service R12 systems in the US,nothing illegal about if your licensed.
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Unread 06-27-2013, 09:55 AM   #21
streetglideok
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I think 1994 was the last model year R12 was used in mobile applications, wasn't it? May have been 1995. No Liberties were ever sold with the stuff. Cant wait to see the headaches we get from R1234yf.
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Unread 06-27-2013, 08:57 PM   #22
Ted15
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Quote:
Originally Posted by tjkj2002

R12 has not been used is like 20 years,heck R134A is going to be banned here soon.R134A is already banned in Europe,total ban by 2017 where you can not even service R134A in Europe.

Oh and by the way if your properly licensed you can get and service R12 systems in the US,nothing illegal about if your licensed.
I'm licensed but that stuff is crazy expensive. I thought they were still using R12 in Europe until recently when we started phasing out R22. Why would they stop using R144A? There's no chlorine in it, any word on the replacement?
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Unread 06-27-2013, 10:13 PM   #23
tjkj2002
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Quote:
Originally Posted by Ted15 View Post
I'm licensed but that stuff is crazy expensive. I thought they were still using R12 in Europe until recently when we started phasing out R22. Why would they stop using R144A? There's no chlorine in it, any word on the replacement?
No R12 has been long gone.The replacement for R134A is R1234yf and is flammable which sould go over well here with all the sue happy poeple.
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Unread 06-27-2013, 10:46 PM   #24
streetglideok
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Quote:
Originally Posted by Ted15 View Post
I'm licensed but that stuff is crazy expensive. I thought they were still using R12 in Europe until recently when we started phasing out R22. Why would they stop using R144A? There's no chlorine in it, any word on the replacement?
You mean R134A? The reason for the replacement, is because of it's greenhouse footprint. It is a far more potent greenhouse gas than CO2. For that reason, since the ozone hole is fixing itself, now the crisis is the political mindset of global warming. Don't confuse this with the scientific theory of climate change. Big difference.
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Unread 06-28-2013, 06:44 AM   #25
Ted15
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Yea, it was a misprint ;-).
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Unread 06-28-2013, 11:10 PM   #26
Poncherello
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I drove about 300+ miles and my AC began to blow warmer air at the end of the trip. Shut it down and pulled over. 1st thing I noticed no water was leaking from underneath the vehicle lie it use to do. Secondly, the line was frozen solid .

Taking it to the dealership soon for that, the clock issue and splash back when filling it up at the gas station. I hope the warranty covers most of it. If not my axe will do the rest lol.
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Unread 06-29-2013, 12:03 AM   #27
JSAN
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Quote:
Originally Posted by Poncherello View Post
I drove about 300+ miles and my AC began to blow warmer air at the end of the trip. Shut it down and pulled over. 1st thing I noticed no water was leaking from underneath the vehicle lie it use to do. Secondly, the line was frozen solid .

Taking it to the dealership soon for that, the clock issue and splash back when filling it up at the gas station. I hope the warranty covers most of it. If not my axe will do the rest lol.
yup, that'll happen if your drain line was clogged. The moisture on the evap fins needs to drain via the drain line. If the drain line is clogged the water builds up and freezes on the evap. The temperature sensor senses that its cold so it doesn't cycle the compressor. I don't know what system is on the liberty but generally that could be one of the reasons.
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Unread 06-29-2013, 07:14 AM   #28
tjkj2002
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Quote:
Originally Posted by Poncherello View Post
I drove about 300+ miles and my AC began to blow warmer air at the end of the trip. Shut it down and pulled over. 1st thing I noticed no water was leaking from underneath the vehicle lie it use to do. Secondly, the line was frozen solid .

Taking it to the dealership soon for that, the clock issue and splash back when filling it up at the gas station. I hope the warranty covers most of it. If not my axe will do the rest lol.
A low AC charge is the #1 reason for evap freezing.
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Unread 06-30-2013, 06:41 PM   #29
Poncherello
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Thanks Folks taking it on the 11th of this month.
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Unread 08-05-2013, 12:12 PM   #30
beherenow
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my A/C has not been the same in a long time. i remember when it was new and after i parked there would be a leaking underneath. A/C was ice cold back then

now it feels like the jeep needs to start going for a while and drive away, take air from outside to start to cool inside
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