WBO2 cycining?

[rconlon67]

Should the WBO2 cycle with the narrowband? I thought it should be more of a steady value.

Thanks for any input,
RyNo

 

[romeen]

How large of a cycle are you talking about? At idle it's normal for the WB reading to fluctuate a little bit. At idle my WB will fluctuate from about 14.8 to 15.4. But the WB should not be cycling with a large variance like the NB signal.

Is this cycling that you are talking about showing up on the gauge or as a logged voltage reading?

 

[rich3389]

Yes the WBO2 will fluctuate when in closed loop(idle, cruising), but when the car goes into open loop(flooring it or getting on the throttle) the AFR should read fairly steady.