O2 Sensors replacement

[jb92563]

Since my P0430 code comes and goes, borderline, I thought that fresh sensors may be just enough to pass the smog.

I realize what you are saying is true but I need a slight nudge to pass the smog and since this has occured AFTER a major smoke fest with the AOS going out I feel that carbon from all that oil is what may be hampering/plugging my cat and sensors.

I'll check the sensor Voltage curves and see if I can confirm what is happening.

In theory the Cats should last forever if they don't get plugged, fouled or broken ceramic matrix.


I take it the upstream O2 sensor voltage would be the nearly constant voltage and the downstream following the sine wave?

[Jager]

http://986forum.com/forums/general-discussions/47002-calling-986-forum-master-mechanics-2.html

[steved0x]

Originally Posted by jb92563

I take it the upstream O2 sensor voltage would be the nearly constant voltage and the downstream following the sine wave?

Upstream following the sine wave and downstream nearly constant. If downstream is a sine wave too then the cats aren't doing the job. I think there are lots of good graphs and info in the thread jager linked.

Steve