elbeee964

Keith's RSAmerica site likens the sound to a "a ping pong ball".
As other have said: Perfectly normal.
Perfectly 9-6-4.

And welcome! [CLANK-Clank-clank]

ian89C4

Terrible angle on it, but the vent is the silver deal surrounded by the red box. I too was trying quite hard to figure out what it was. Not until I dropped the engine to do a reseal did I figure it out by pulling the vents off, and they just happened to make that noise

Metal Guru

Mine only make that clang when it's cold out.

Pak_37

We "solved" this problem with the help of an earlier Rennlist search as well -- we think the only reason it happens when it's cold out is it directly relates to the position of your heat control slides and cabin pressure.

911Jetta

...and you know you're a 964 addict when you know what people are talking about when you hear the words "clank-clank"...