Strange sound from gas cap area / ontop of right wheelwell

[Kenny Boxster]

Originally Posted by haz

aha !!

There are two valves under the right front fender that are the culprit of this noise. they open and close for tank venting and are not shutting off. Replace them and the noise will go away

so now I need to google purge valves , what damage them not working might cause my car -and what they do and how many $$$

thanks!

I believe Haz is on the money here. I talked to a friend who indicated a valve was causing his problem. In his case it was Carbon Canister valve. He also indicated he had trouble fueling. I have never had this problem however.



I have a whistling noise that is pronounced going 70mph+. There are reports of blowing and whistling or sucking from these valves. I uploaded a friend's repair invoice that remedied his problem.