Abeness wrote:
> I'll try running it with the sensor completely disconnected before I
> replace it and report back if I have a minute.

Car runs fine with the sensor completely disconnected. Now, I haven't
yet reset the ECM, so will also try that and see if it's able to get
past the lawnmower chug stage on default O2 sensor values before I pop
in the new one.

If only I could get the old sensor out... I've sprayed liberally with
Liquid Wrench--will pick up some PB Blaster tomorrow--and tried running
the engine for a couple of minutes to warm up the exhaust some. I have
an O2 sensor socket, but am worried about rounding off the nut. I
suppose I could snip the wires and use a closed sparkplug socket to get
the old one out, but the O2 sensor socket seems pretty solid despite the
slot for the wires.

Since I haven't taken the heat shield off--those nuts are pretty well
rusted to death--I have limited tapping abilities. Any other ideas?