Wind noise question

Was your AC or heat on? Perhaps something opening/closing, fan, vent, whistle with your heat or AC - either in the dash or the house. Maybe radiator or transmission cooler clicking on and off.

AC was on, but I experimented with turning it off or changing mode, and it didn't seem to make a difference.

I can only sympathize. I have an MDT (truck) and sometimes it's quiet, and sometimes it's like the window is open. Never have been able to pinpoint anything. The only remedy is wearing Bose headphones.

I chased a similar noise in my brand new rv for about 2 1/2 years. It would come and go randomly and kind of sounded like someone blowing over an empty soda bottle and some times like a high pitched sorta squeal. Turns out it was coming from my galley sink drain. This would happen if the p trap would somehow get emptied and the air blowing across the vent in the roof while I was traveling at about 55-60mph. Solution? always keep the sink drain plug screwed down tight.

I think it may have to do with, direction of travel, and direction of the prevailing wind and speed. Seems if conditions are just right it will form a vortex and you will get the noise.

Check the joint between the overhead bunk area and the chassis. I had an older Class C start to come apart coming across New Mexico as it would turn out. Had to re-rivet it with heavier and longer rivets all the way around. Steamed to be much better afterwards, but have since traded it off. Hope this helps.

Could it be the entrance door ? Mine is right behind the passenger seat and that door leaks air. Sitting in the drivers seat, it sounds like its coming from the passenger seat but it isn't.

winnietrey wrote:
I think it may have to do with, direction of travel, and direction of the prevailing wind and speed. Seems if conditions are just right it will form a vortex and you will get the noise.

Ditto. It happens to my Prius this way.

jdc1 wrote:

winnietrey wrote:
I think it may have to do with, direction of travel, and direction of the prevailing wind and speed. Seems if conditions are just right it will form a vortex and you will get the noise.

Ditto. It happens to my Prius this way.

X3, I think awning arms play into it too.

I had a similar issue with my C but knew the cause, it’s a routine thing to a pilot.

It’s the crosswind effect. When the airflow is head on there is equal pressure on both sides, but when the wind is favouring the drivers side there is increased pressure on that door, but also a corresponding lack of pressure (in fact a slight vacuum) on the passenger door. The physical layout of the front doors means the upper portion is pretty easy to pull away from the body.

In many cases just opening a roof vent will create a lower pressure on the inside of the RV and help equalize the pressure on the door.