FAST WBO2 going bad?

[V6 Beast]

I think my WBo2 is going bad. Usually when I make a pass and review the data, my Actual AF is a fairly jagged line. It doesn't vary alot, but it is a jaggy line. The runs from last night, the AF line is a smooth line with gentle curves. Is there anyway to really know if it is going bad. It is maybe 2 years old. The car ran like crap last night and 3 weeks ago it was running great. No changes other than a different boost controller. Looking at the dashboard with key on, all the o2 voltages are in the green.

Sully

 

[V6 Beast]

Here are the log files.

Log from a couple weeks ago when everything was fine. Click Here

Last night's runs Click Here

 

[norbs]

Seems your program has gone corrupt. A/f dancing from 12.1-12.5 on your target fuel. But the rpm line is wacked also. Check for loose grounds some where, or Connections. Reload your file for now into the ecm.

 

[REDS HOT AIR]

looks like you recorded using the main dash this last time which changed your logging from 20 frames per sec to 2 frames per sec


set your logging back up to the right dash and make sure its set to 20 fps

 

[V6 Beast]

Well.. I did add the 3 uego voltages to the dashboard I was recording with for that trip to track. I never changed the frame rate, but it seems to me that there are a couple of items that really screw up the sampling.

Question is could this possibly affect performance?

S.

 

[REDS HOT AIR]

shouldnt affect performance at all

yeah your limited to how much you can log at 20 fps

get a log at 20 fps ... hard to tell much at 2 fps

you did have about 3# more boost on the first file ..If nothing has changed may want to freshen up the plugs for starters ... may be dropping a cylinder up in boost

 

[bruce]

Originally posted by V6 Beast
Looking at the dashboard with key on, all the o2 voltages are in the green.

Just as a FWIW, there is no predictable strategy for detecting a failing WB, other then to replace it, unless you have a gas-bench.
And even a gas bench is not an absolute guarantee.