Jbier

Welp, my engine has developed a squeal that appears to be coming from the rear of the engine where it mounts with the transmission, but honestly it just sounds like its coming from anywhere in the engine compartment. At idle, the noise is there, but under any load the noise goes away. Also, I noticed that ever since the squeal, an alarming amount of white smoke pours out of my exhaust at startup and during heavy acceleration. I believe the sound and smoke to be the cause of a failed Air/Oil separator, but I would like a few opinions. Here is a video:

Insmniac95

My car had the same symptons when my AOS failed. There was a small hole in the rubber vacuum diaphragm which most likely caused the squealing/whistling. Replaced the AOS and everything is back to normal.
I have a 2007 Cayman S.

YllwG8r

Thanks very much for that video!

I had a bit of the white smoke during a start up and was told to consider a new AOS as well. I haven't done it yet, but if I hear that squeal at least I won't freak out!

SpyderSenseOC

I have no idea about any AOS but the noise is definitely air movement related. That's good news.

mposton

Did you ever find the issue? My 2008 is doing the same thing and Im suspecting the exhaust. I already changed the AOS