2009 Kia Sedona LX 4dr LWB
Q: ac noise, like a knocking sound?
does not make noise when ac is off so it's definitely a noise from the ac.
Mechanic Q: Knocking noise from AC?
Sounds like coming from under the hood when you're outside of the vehicle; but when you're inside it's definitely coming from the ac. It does not happen when ac is off