contax

I've been driving a 2012 Cayenne(CPO, about 50k now) for several months now, things were okay until recently, but in April I had this typical cracking sound between 2-4th transmission gear and had my transfer box replaced.

Last week check engine light was on, but the car felt as usual, so I drove it for few more days, and I had a chance to drive near a Porche dealer in my area. I was expecting some minor issues like fuel cap or something(my wife fueled my car just before the check engine light), but the manager said it was a vacuum leak problem, so they'll have to open up the engine, probably have to change the gasket and/or some valves. He said it will take at least 3-4 days, so I'm on a loaner car now.

Anybody had similar issues like this? I've tried to search the forum, but not much success with something related to vacuum or leak.

99_911

I just replaced my purge valve on my 12 cayenne s. I do have a scanner and code was showing major vacuum leak. Replaced the valve and its been fine since then.

contax

Thank you for the info. I just hope this is not a start of some multiple breakdowns. The repair took much longer than expected, and I could get my car back after 10 days.
The final invoice states, "Cause: oil separator failed" and they seem to have replaced the valve and some of related gasket and o-rings.

PTEC

contax

The manager told me they had to order some parts. He also mentioned valve replacement but it is not written in the final worksheet.
The loaner car was a panamera this time, so it wasn't that bad to wait.