Calling on 986 Forum Master Mechanics

[JFP in PA]

When you get the sensors ahead and behind the converter drawing similar lines (one should be a sine like wave, the other relatively a straight line), which you appear to have, it is the sign of a dying cat. I'm away from the shop at the moment, but I can show you curves for good and bad converters, yours appears weak at best.

[Jager]

Originally Posted by JFP in PA

When you get the sensors ahead and behind the converter drawing similar lines (one should be a sine like wave, the other relatively a straight line), which you appear to have, it is the sign of a dying cat. I'm away from the shop at the moment, but I can show you curves for good and bad converters, yours appears weak at best.

What! I need to replace a catalytic converter with only 246,000 miles on it?

[thom4782]

How did the cats perform on your last CA smog test?

[Jager]

Originally Posted by thom4782

How did the cats perform on your last CA smog test?

Passed with flying colors two years ago... I have to get a smog this month for August registration.

Since I am not getting a CEL (the P0430 shows-up in memory... Sometimes weeks later after clearing) (and yes the CEL works) I will probably go ahead and take it to a Smog Shop and see what happens.

[coolbreeze551]

I would be interested to see what a healthy o2 reading looks like as well so I can compare with mine