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My Sentra usually has ice cold A/C, but within the past week, it goes off and on randomly. The blue A/C light is on the button, but luke warm air blows out. Then I rev the engine, or accelerate and it comes on blowing cold air. When I decelerate, or stop it goes back to luke warm air. I am thinking A/C clutch or possibly compressor? Anyone have these symtoms before?
 

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2018 Nissan Pathfinder SL
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may be overcharged.
Feel the return line, should be cold even when idling, if its warm when idlling and cold when you rev the engine this is one possibility.
 

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It has developed a leak and is cycling on low pressure control. I would grab a cheap charge kit (the one with the gauge) and see what the presasures are like before dumping and in and I think you will see that it is low. Then go ahead and charg it until it reads in the safe zone and you should be good to go!
 
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