How do I know if I need new O2 sensors?

[RandallNeighbour]

I don't know what it sounds like because I've never had that happen to my car (knock on wood). However, I thought of it when you posted this issue.

You can check it by taking off your intake to see if you find oil in there. How involved that is I do not know.

[j.fro]

As the A/O S. fails, there will be an oil buildup in the intake, particularly near the throttlebody. When the AOS completely goes, it will cause the car to smoke/burn oil...you and everyone behind you will know about it then!

[fab]

hey guys, I had a cel light recently w/1130 code and was pointed in the direction to look at the air intake. Does anyone have a pic of what the air oil seperator looks like?

[Perfectlap]

try a search on Rennlist. I believe someone posted the Porsche Electronic Catalogue diagram in a thread on this topic.

[Paul]

Here it is from the Porsche website:

http://www.karrera.net/en.partscatalogs.html