The routines for the catalyst and the o2 sensors seem like they should be easy. Not sure why it would take 200 miles but I'm obviously no expert. I do know it is hard to keep my foot steady at exactly 40mph for a full 4 miles.
Been using my OBD2 scan tool and android phone to check the monitor status. That's it. Haven't logged the sensors yet. Still on SCT - haven't converted to HP Tuners. Friend examined the tune on his HP Tuners laptop and it looks like the tests and sensors are enabled.
From what I've found, it's 40mph for up to 4 minutes, not for a full 4 miles.
http://www.obdii.com/drivecycleford.html
This morning I got the FORscan software up and running on my laptop with the new little Bluetooth adapter I got Saturday, and checking for codes, I found that I had the dreaded P0420 and P0430 codes stored in the PCM as intermittent faults, and not setting the check engine light.
Now, a couple months ago I had some nasty exhaust leaks at the cat-conv/H-pipe connections, and I wonder if that's what set those codes, but after all the tune reloads I've done since those repairs, I would've thought that those codes would've been erased a long time ago.
So there might still be an issue with the cats or with something causing those codes.
I reset the PCM and its codes, and this evening I took it out for about an hour, attempting the drive cycle mentioned in the link above.
However, that cycle seems somewhat outdated for this car, since the misfire monitor sets within a minute of driving the car, the EGR monitor sets pretty quickly if I just cruise at a steady speed for a few minutes, and even the EVAP monitor sets while crusing at a steady speed.
It has me doing all kinds of crap that's apparently not necessary to set those monitors.
But I tried it, including about 20 miles of city/stop-and-go driving.
And came home frustrated again, with the catalyst and all 4 sensors still reading Incomplete.
I did a few screenshots of the FORscan Mode6 data after I shut it off, some of the "not ready" displays might be cuz the engine isn't running, I think
When I re-checked for codes, none were found.
So at least the P0420/P0430 might be gone, and hopefully just related to those leaks that have been mostly addressed since they showed up.
These are the screenshots I mentioned, if any of you reading this thread have any words of wisdom for me, please share, thanks.
The "tests performed" log:
The final DTC reading: