Newbie with a Question--AC -
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post #1 of 6 Old 04-17-2013, 08:46 AM Thread Starter
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1989 YJ Wrangler 
Join Date: Apr 2013
Location: Dallas
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Newbie with a Question--AC

Trying to add freon to the AC system and cant find the low port. Found the High port nipple with the "H" on it but dont see a low. I've run every line from the firewall to the front and dont see one. On the advice of a coworker who also has a jeep he suggested I post pics here and get some thoughts.

The red arrows indicate where we think I should load the freon. It's not necessarily a nipple but more a nut I'd have to take off.

Does that look like the right spot?

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Jeep Pic 1.jpg   Jeep 2 image.jpg   Jeep 3 pic.jpg   Jeep 4 pic.jpg  
mknitgrtjeep is offline  
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post #2 of 6 Old 04-17-2013, 10:15 AM
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if there is no pressure on system, unscrew that sensor and see if a scharder valve under there.
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post #3 of 6 Old 04-17-2013, 06:40 PM
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1993 YJ Wrangler 
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There is a brass cap just to the right of the one in the pic you have labeled high side port,slowly loosen that cap and if nothing starts leaking out take it all the way off,i'm thinking there is a fitting under it to add freon. Also depending on the year make sure to add correct refrigerant
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post #4 of 6 Old 04-17-2013, 08:19 PM
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the arrows point to your pressure switch, both high and low side ports should be on the back of the compressor
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post #5 of 6 Old 04-17-2013, 09:00 PM
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1991 YJ Wrangler 
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What year is your jeep? Original engine? Here's a post I found that the guy has a 93 I believe.

Post a few more pictures of the compressor if you can. Little closer up. Hope this helps
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post #6 of 6 Old 04-18-2013, 10:07 AM Thread Starter
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1989 YJ Wrangler 
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Location: Dallas
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So here's the interesting tale...stopped by my local Firestone (I know the owner) and had a guy there look at it. It's a converted system that's been converted to R13a. So the High port in the pic, that's the right port for freon load. I was just being cautious as it even had a cap that says H on it. Mechanic confirmed I was good to go. 30 minutes later at the house, cold AC. The irony is yesterday it was in the 80's, today the 40's, gotta love Dallas
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