My 2006 RL has been losing a small amount of freon where I have add about once a year.
Unfortunately that small loss now appears to be a steady leak that only lasts about two weeks.
When charged, it works great and I have never let the high pressure side go below 150 psi on a hot Texas day.
I did a visual and soap test on all the lines and condenser with no evidence of oil or bubbles
My next step is to add fluorescent dye and recheck.
My question at this time, is there an evaporator at the rear passenger vent, and is there access to the front evaporator without tearing into the whole dash.

Thanks
Harry

 

There's only one evaporator core which is located in the dash. The service manual makes no mention of removing the dash to access it. You'll have to remove the glove box and it's frame, along with the kick panel to access the blower unit.

 

Thanks for the reply and info.
I picked up the can of UV dye/freon but will have to let it leak down some before putting it in.
All signs are pointing to the evaporator and now feel a bit more confident that I should be able to change it out if needed.

 

Good news, the UV dye revealed the the AC discharge line from the compressor to the condenser is leaking.
I guess the inner core failed as it was leaking along the length of the rubber part of the hose.
I'm contemplating adding an oz or two of oil when I put the new hose on as this has been leaking for some time.
Another plus is I found the ac cabin filter behind the glove box was totally clogged which had really reduced the air flow out of the vents
Now with the glove box out, I think I'm going to try my hand at upholstering the really ugly glove box lid.

 

New hose went on with no issues. Pulled vacuum for one hour and let it sit for 30 minutes with no loss.
Added 2 oz of oil and charged system with about 16 to 18 oz of freon until the return line was cool and lightly sweating.
It was 105F in my shop with a large shop fan blowing at the radiator when I added the freon. The pressure at idle was 45/250 and 30/310 at 2500 rpm.
For yall that are more knowledgeable, do these pressures look OK?
The ac is cooling great.
Thanks in advance