1996 Honda Accord LX. Ok. This is an odd problem and I can deal with it but it sure is annoying. Every time my car gets over 60-65 and the recirculate button is on, whether the A/C is running or not, there is a constant whistling sound. It's almost like the panel or dam that shuts out the outside air is not closing all the way or something.

Does anyone know:
1. What causes it?
2. How to fix it without giving up an arm and a leg?

Any help would be greatly appreciated!!

 

Have you checked side vents inside the car. I believe you can close and open them individualy.
That's the first guess. The second one would be to check the grid below the windshield for any obstruction (leaves, dirt, etc).

Sam