cross counts

[DCVING 6]

Trying to get a feel on the whole cross count thing. I have a miss problem that started after I put 110 leaded in the car. I have a denso lead proof O2 in it, and it seems to have decent cross counts, as far as I can tell. As I'm cruising at 55, it starts at a low number like 8, and increase each flash of the screen (scanmaster) up to the 240's, then starts over again.

 

[DCVING 6]

The following is the thread in which I describe the popping deal.

http://www.turbobuick.com/forums/showthread.php?s=&threadid=134472

 

[ijames]

Cruising at 55-65 mph you should see 20-40 cross counts per aldl frame. You should also see the O2's go up over 750 and below 150 regularly. If the O2 sensor gets really lazy or dead it can stay right around 500 but will show lots of crosscounts. The denso may be lead resistant but I've watched a brand new one die before my eyes in 15 minutes so they aren't perfect .

 

[DCVING 6]

Well the O2 is slow. I changed the plugs and the popping went away. I would assume the leaded gas fouled the plugs.
Thanks for the help.