Odd Sound coming from A/C

Hello all,

I had previously posted a thread under the same title regarding an odd noise originating from my air conditioning unit. One person suggested that the sound might be coming from air in the coolant, while another suggested it might be coming from the air mix control servo. To date, I still have been unable to specify where the sound is originating from: after further observation, I feel as if it might be the air mix control servo but I'm still not sure. I have attached here a .zip file with a audio I recorded the sound in action (the audio quality is not the best, so you might need to turn your volume up). The best way i can describe it is a mix somewhere between gurgling and clicking. Do you guys have any experience with sounds like this?

Thanks!

 

The sound continuously goes off even when the a/c unit is off. So regardless of fan speed it will continue to sound.

 

And I'm not sure if you were asking if i have an iPhone X, but i have an iPhone 7 in case you were inquiring what I recorded it on

 

I had figured the sound was originating from the servo motor. Is that something that can be fixed DIY? Because I can only imagine the dealer charging an arm and a leg for a repair to that mechanism.

Thanks!

 

In that recording I actually had the microphone pointed towards the passenger side A/C vent. As far as I can tell, it sounds like the noise originates more from the passenger side rather than the driver side.

 

I made a recording of it underneather the driver side too, but the audio quality was poor and there was a lot of ambient noise.

 

Would debris in the fan blades still cause a sound even if the air conditioning is off? Because the sound will continue even after I've had the A/C off for a period of time. My car is in the shop right now so I don't have access to it at the moment. But I did change the air filter a little over a year ago, so I wouldn't think it should need to be changed so soon.

 

I didn't think he was saying to change the air filter to stop the noise, I was just throwing that in as any information that might be useful. I also was asking if a leaf or debris in the fan could actually be the cause of the noise, because it continues to sound even when the A/C is off, and I would imagine the fan wouldn't be moving when the A/C is off.

 

I've read lots of posts on this website saying that cleaning the servo and greasing it may help, could that work for me if I tired it? I have seen lots of YouTube videos showing the actual mechanism, but have never seen where it is actually located. I know that it is underneath the driver's side panel, but I am not exactly sure where.

A few months ago my A/C had a problem where no air would come out of the vents unless I put the A/C on maximum speed, then it would force the air out and it would operate like normal. I haven't had this happen in a long time, but just wanted to mention it in case it gave you any insight.

 

Well I'll check the fan when I get the car back, but since the sound continues even when the A/C is off, it seems unlikely.