Yeah.  If you want to learn something, only change one at a time, otherwise
you lose your control.  Just do the O2 sensor and see if you get a fix.

The condition of the sensor you pulled sounds not too far off normal, except
the soot would indicat a rich mixture, which makes sense if you have a bad
contact with the sensor.  If disconnected, you tend to run full rich.

Karl Wolz

|
|   I am first going to change the O2 sensor and the Temp II
|sensor, see if that does it...
|
|  Anyone have any comments?
|