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

Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal

Problem overview

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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Jeep Wrangler vehicles with this problem

1 model year affected

1994 Jeep Wrangler

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