Noise When AC is Tuned on Due to Incorrect Refrigerant Level on Jeep Wrangler

A hum or moan can be heard when the AC is turned on if the system is not charged with the correct amount of 134a refrigerant (.9 kPag or 32 oz).

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Average mileage: (–)
1 model year affected: 1994
1 person reported this problem
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