Hondata

got into the wiring today, and found that the sensor plugs for the primary and secondary o2 sensors had been switched. the ecu was reading the bypassed secondary o2 sensor as the primary and therefore gave a reading of 3.85. after switching the sensor plugs, everything went down to normal readings ...

to follow up: the tps reading was .6, and was backed down to .45 and then showed 4.38 @ wot. the vehicle is running with a basemap at this time, and i'm hoping that the issue will be resolved when it goes in for full dyno tune shortly.

new o2 sensor. tps still reads steady at 1%. Will check the V reading tomorrow. replaced coil and ignitor with spares i had laying around as well just for good measure. I have a roaming idle during warm up, but not at temp.

btw i didn't think of this earlier, but the rear o2 sensor is bypassed. i ...

Will be going to Honda tomorrow for new O2 sensor. Thanks again!

Hondata wrote:The problem is from closed loop operation. It looks like the o2 sensor is missing or faulty.

Thank you very much, Spunkster! Could I get just a brief explaination as to how that is indicated? I'd like to learn more about reading the datalogs. Again, thank you!

I have been noticing a slight miss under load. At operating temp, the car will start to cut out if at a constant throttle position. Please be so kind as to review my datalog! Obviously, I know very little about what I am looking for, and am doing my best to learn.

Will be going to tuner shortly ...