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2014 santa fe limited. Ac has leaked in the past. I recharged this spring, low side only as I don't have a manifold. Ac works until rear ac is turned on. When the rear ac mode is activated, pressure increases low side and compressor seems to shut down and vents turn warm. If I turn the ac off and back on without rear ac activated it cools fine. Pressure low side is 35-40psi at 75-80 ambient. Temp at vent is from 48 to 54. Possible overcharge? Airflow seems normal front and rear. Thanks for any advice.
 

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It's not getting rid of enough heat. I would want to see the high side as well.
 
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