mzjt964

Hi all,

I experience an oscillating ventilation sound. Every couple seconds pitch goes up, followed by going down shortly after. It stops if I put temp control all the way up or down.

AC switched off. AC control unit recently serviced.

I'd imagine it has to do with the cold / hot air mixing, faulty temp sensor or actuator?

Thanks

Spyerx

if its one of the flappers you can open the trunk remove the plastic panel right at the cowl and watch the 5 motors. they shouldn't oscillate. if they are, its likely the motor over the temp sensor.

0luke1

Does it sound like “Luuuuuuke, I am your faaaather”?

mzjt964

It does! lmao

mzjt964

Not less than three of these servo motors had to be replaced, all quite now