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Hello. Welcome to Just Answer. Please allow me to assist you. Please do this test for me: Start the car and turn on the AC. With your hand, feel the temperature of the 2 aluminum tubes that enter the firewall. Advise if they are both cold, one cold and one hot, one cold and one warm, etc. Then advise. Thanks.
Additionally, when the AC is on, verify that the compressor clutch is engaged and turning.