Don't get me wrong, they do adjust the mixture, but if it gets out of a range by +/- 5-10% (depending) it throws a fault. Then, you gotta find the vacuum leak, leaky injector, bad sensor, etc. Since the start of OBDII @ 10 years ago, that number is down from 25%. And, like I said, their primary job is feeding the cats... Kelly Tom Jennings wrote: > On Mon, 2 Apr 2007, Kelly Hardie wrote: > > >> systems for errors. These systems are so sophisticated and so dialed in >> that you'd never notice the difference under 99% of conditions if you >> disconnected them (assuming everything else is working correctly). >> Customers with bad lambda sensors almost never have driveablity >> complaints, only "MIL on"... >> > > Wow. So the old concept of "feedback" mixture control off the > O2 sensor is dead. Figures I guess, the inputs and maps are > good enough these days! > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://www.amc-list.com/mailman/listinfo/amc-list > > _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list