windshield howl

longhorizon · 04-28-2010, 08:25 PM

Since having my windshield replaced (via Porsche dealer!), I now get an unbearably loud whine/howl above ~70MPH. This is very obviously related to wind; onset very predictable at apparent wind of 70MPH. There is no water leak anywhere and visually the installation appears proper and intact. I've notified the dealer but before bringing it back there I'm curious whether this has been reported or experienced by others. Thanks in advance for any information.

longhorizon · 04-28-2010, 08:29 PM

I realized after posting that it might occur to someone I referenced the wrong car. No, I know I'm on a Porsche site. Subject car is a 2002 Boxster S. Included pic of my Volvo thinking it would show as thumbnail under user name. Apologies for that. longhorizon.

txhokie4life · txhokie4life's Garage

I have one 2000 that does it bad, and a 2000 S which I noticed
did it somewhat today into a head wind?

I'd like to know as well -- neither have had a window replacement.

mike

bcarlstad · 04-29-2010, 01:40 PM

I also, have this howl. Cross wind direction seems to effect it. I'm guessing it is an undiscussed common problem thats just going to drive us crazy. Like all noises it's hard to locate exact spot sound is coming from. I hope I am wrong and you figure it out, and tell all of us.

longhorizon · 04-29-2010, 06:51 PM

It is very definitely windshield related and, yes, windspeed and direction plays a key role. Comes on much sooner in a head wind, later in a tail wind. Never a problem in my car prior to (factory) windshield replacement. It may help to speak to a factory rep. If I come up with anything, I will of course post back. Maybe someone with the answer can enlighten us. Thank you both.

Wayne 962 · Wayne 962's Garage

Here's my trick for determining where an air leak is coming from. Get some black electrical tape and tape the windshield to the frame of the car. If you do it right, it doesn't look bad at all. Then drive and see if the noise is still there. If not, then remove sections of the tape one at a time and then drive and see when the noise comes back. This may take a few days, but it's pretty easy and works well.

-Wayne

longhorizon · 04-30-2010, 02:38 PM

Wayne,
Thanks much. Will begin experiment. Put me down for a pre-order of your Boxster book!

Zeke · 04-30-2010, 03:44 PM

Well, your Volvo is way cool. In order to make that your avatar, you will have to reduce it to something like 50 x 50 pixels and then upload it under "edit avatar" in the User CP section. I think I did the reduction in MS Picture Management or Paint.

Wayne seems to have a good idea on finding the source, but how does one fix it?

Wayne 962 · Wayne 962's Garage

Quote:

Originally Posted by milt

Wayne seems to have a good idea on finding the source, but how does one fix it?

I haven't replace a windshield on any of these cars yet (hopefully I won't have to). There's some type of seal in there, I'm assuming it's worn out. If it were my car, I would get some unobtrusive sealant and a syringe and try to inject it in there first. I'm not sure what type of sealant I would try, maybe some silicone or Permatex, as it's black and not too terribly messy.

-Wayne