O2 Voltage Insane?

[1999ls1]

Did a few initial logs today... Had some what seems to be weird results.

As soon as I go WOT my O2 voltages drop near 0 values (0.040v).

From what I gather these values during WOT should be in the .850 to .950 range.


I'm attaching a sample image of my logs.






Any ideas?!


Thanks,
Dave

[Delco]

You are running lean when under load - the O2 reading is just letting you know what is going on.

You can see the O2 is functioning properly from its cycling earlier in the log.

Add some fuel to the tune