I appreciate all the feedback from my last post and it only took half a day. I'm not sure where this post belongs, but I'm sure it isn't electrical. During cold weather however I'm getting a whistling sound that will start gradually as I accellerate and then become very loud. All it takes to lose the whistling is a tap on the gas pedal, but it usually comes back right away. I have only noticed it at near freezing temperatures and I don't believe it's ever happened in the spring and summer seasons. It's more annoying than anything but I'm worried it may be something serious.

 

Does it do it when you're at a stop or does it go away? Does it seem to come from the defroster?