jvalcamp Posted September 4, 2023 Report Share Posted September 4, 2023 System has been working great until I swapped to a 16V battery. Ever since, the wideband will start up and run while I bring the car into the staging lanes but typically drops out either before the run starts or part way through the run. I traced back through my older logs and it never did this prior to the 16V swap. I didn't change anything with wiring or settings, just dropped the new battery in. Did I miss something? I have tried with a different sensor and got the same result. I did search and could not find anything related to issues with 16V battery. May be another coincidental issue? Thanks.ECU Log 2023-08-31 6;45;12 pm.llg (Area of interest is 38:52 to 38:56) Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 4, 2023 Report Share Posted September 4, 2023 There are no lambda related channels in the log so cant tell you much from that. What is lambda 1 error and lambda 1 temperature reporting when it fails? Do you have the capacitor wired into the power supply? Quote Link to comment Share on other sites More sharing options...
jvalcamp Posted September 4, 2023 Author Report Share Posted September 4, 2023 There does not seem to be any lambda errors and temp is reading 32F. I do not have a capacitor wired in. And sorry, not sure what you mean by there are no Lambda channels in the log. How would I add them? I am logging Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 4, 2023 Report Share Posted September 4, 2023 It is disabled when the engine isnt running. You want to look at what lambda 1 error and lambda 1 temp show when it faults, so log these runtimes. Quote Link to comment Share on other sites More sharing options...
jvalcamp Posted September 4, 2023 Author Report Share Posted September 4, 2023 Ok. Just getting to the track now. Will try and report back. Quote Link to comment Share on other sites More sharing options...
jvalcamp Posted September 4, 2023 Author Report Share Posted September 4, 2023 Unfortunately the day was a bust. Car was running on 3 cylinders. Spent most of the day diagnosing and now fear that I need to pull the head to check valves. If all goes well, will be back up for next event in 2 weeks and report back then. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 4, 2023 Report Share Posted September 4, 2023 I would add the capacitor as per the alternative quick start diagram also as that solves the most common power supply noise related error. Quote Link to comment Share on other sites More sharing options...
jvalcamp Posted September 19, 2023 Author Report Share Posted September 19, 2023 Finally got car back to the track. Wideband was working most of the time now but in the attached log it does show one of the passes where it did cut out on the third last run. Hopefully I set the ECU logging to capture the right runtime values. ECU Log 2023-09-17 3;55;20 pm.llg Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 19, 2023 Report Share Posted September 19, 2023 Yeah you have error 16 which is usually from voltage spikes upsetting one of the tests it performs. Adding the capacitor will likely solve it. Quote Link to comment Share on other sites More sharing options...
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