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

Problem Description and Possible Solution

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).

Problem Data
RepairPal Verified
Average mileage: (–)
1 model year affected: 1994
1 person reported this problem