Nissan Repair Questions? Ask a Mechanic for Answers ASAP
You should check the compressor and make sure that the clutch is engaging. Also make sure the fans are coming on when the ac is on. You could have a bad pressure switch which would prevent the compressor from coming on. You should also have a set a of gauges to check the high and low side pressures.
A high end scan tool is need to check the hvac system for any codes, and to look at live data of the temp sensors.
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Please let me know why and how I can help you more. Thanks Dan
Hello again Dan here,
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