I have an 2009 infiniti qx70 that is having A/C issue when stopped. Car works fine when moving and A/C blows cold. Once I stop at a red light, it cuts off and no cold air. I've checked coolant level, refrigerant, radiator, AC compressor is running and not seized. What else can I check at this point?
Did you or someone recently "top off" the refrigerant? Overheating in the condenser with too much fluid can cause the high pressure limit switch to engage, stopping the compressor. If you get it warm and run it in your driveway, when the AC stops does the compressor also stop? Running on the highway may be enough to cool the condenser completely, reducing high-side pressure.