A/C - Vibration/Humming Noise
SOURCE: KIA Technician Times Volume 6 Issue 3, 2003TITLE: A/C Noise
APPLIES TO: Sedona
SERVICE TIP:
Some 2002 and 2003 MY Sedona models built before 12/02 may experience a vibration or "humming" noise with the A/C on. To confirm the complaint, alternately switch A/C on and off, and verify that the humming noise is not present with A/C off. This concern is most audible with the engine idling and the vehicle stopped.
To reduce incidence of noise transfer, the A/C low side hose material has been revised from 12/02 production. To correct this concern on complaint vehicles built before 12/02, replace the low side hose with the new hose P/N: 1K52Y 61 462B.
Also check and make sure other A/C lines are not interfering with or rubbing against body panels as this may also cause noise and vibration transfer into the vehicle. If necessary, move lines away from body where possible and apply a locally available foam wrap to insulate lines as required.