Anyone successfully completed a drive cycle to have the readiness monitors run ?

[scholzee]

I am having a stubborn code P0420, and I am pretty sure the Cat was bad. The O2 senors are good but the signal from the after convetor O2 was not proper. I replaced the CAT 3 weeks ago and figured my driving city and highway would have ran the test by now, but the catalyst monitor is still not complete. I saw many types of drive cycles, has anyone personally did one and have it work ?

[old_master]

http://www.obdii.com/drivecycle.html

It works every time if you follow it exactly. Deviate from it at all and you might as well start over.

[scholzee]

Great info thanks, I was doing the drive cycle with no results, but the one you showed me stated it may take 5 drice cycles to for the catalyst monitor to run. that is the one I am trying to get to run, thanks again.