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-   -   A/C help (http://www.wranglerforum.com/f218/a-c-help-103107.html)

amos2208 07-18-2011 12:49 PM

A/C help
 
First time on this forum. I need help on getting the A/c going on the jeep. Anybody know what to change out and steps on how to gewt it going the compressor sounds fine?

Thanks

stimpy 07-18-2011 04:46 PM

I don't know too much about A/C units because I just roll my window down. But I do believe if the compressor is working and its blowing air but the air isn't cold you may just have to recharge the system.

onroad 07-18-2011 07:27 PM

Firstly if it's still an R12 system, you need to retrofit to R134. You need to know exactly how much refrigerant the system holds (in weight) which should be on a sticker in the engine compartment. You also need to know how much if any refrigerant is already in the system.

Honestly you're probably better off letting a shop equipped for A/C work check it out. It's not cheap but neither is blindly shooting a can of freon into the system when you don't know how much is already in there, if there's a leak, or if a low charge is even the problem. And venting off freon into the air is a no-no. There are plenty of other possible issues. Could be a problem with the low/high pressure cutoff switch, expansion valve, compressor clutch, etc.

Tang87 07-18-2011 08:21 PM

Quote:

Originally Posted by onroad
Firstly if it's still an R12 system, you need to retrofit to R134. You need to know exactly how much refrigerant the system holds (in weight) which should be on a sticker in the engine compartment. You also need to know how much if any refrigerant is already in the system.

Honestly you're probably better off letting a shop equipped for A/C work check it out. It's not cheap but neither is blindly shooting a can of freon into the system when you don't know how much is already in there, if there's a leak, or if a low charge is even the problem. And venting off freon into the air is a no-no. There are plenty of other possible issues. Could be a problem with the low/high pressure cutoff switch, expansion valve, compressor clutch, etc.

Also it could be an expansion valve. The durango was busted and the front expansion valve was shot. Have a shop drain it and replace whatever.needs replacing then have them charge it. Costed me 90 instead of 400 lol

herbie 07-19-2011 05:35 PM

first is the compressor cutting in and out or not working at all because if its cutting in and running that would suggest a blend door issue

Wrangler Haven 07-19-2011 06:42 PM

There is no blend door inside the YJ A/C plenum.
I strongly suggest you have a reputable shop retrofit your system to R-134 if it hasn't been done already. It's far cheaper to recharge R-134 then R-12.
You will need to purchase a new Receiver Dryer and have it for them to install at the time of the retrofit. They will change out some O-rings and fittings at the compressor that are not compatible. Then they will evacuate the system to remove any moisture. (You can't do this at home.)
Then they will charge it with fresh R-134 to the proper amount.
I have had this done myself recently and everything works fine.

herbie 07-19-2011 07:29 PM

Quote:

Originally Posted by Wrangler Haven (Post 1391849)
There is no blend door inside the YJ A/C plenum.
I strongly suggest you have a reputable shop retrofit your system to R-134 if it hasn't been done already. It's far cheaper to recharge R-134 then R-12.
You will need to purchase a new Receiver Dryer and have it for them to install at the time of the retrofit. They will change out some O-rings and fittings at the compressor that are not compatible. Then they will evacuate the system to remove any moisture. (You can't do this at home.)
Then they will charge it with fresh R-134 to the proper amount.
I have had this done myself recently and everything works fine.

my bad i assumed it was a ccs /orfice tube system didnt realize i was in yj section not tj


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