Folks newish to HP tuners. I am working on a 5.3 out of a 2002 1500 411 PCM
The truck will idle I have disabled PE and just trying to dial in the maf right now. My STFT is all over the place and the narrow band voltage is also swinging between the banks
Tune and log file attached
I don't want to chase my tail tuning if the O2's are Causing issues. they are a bit pain in the ares to get to. The motor is in a YJ jeep crawler
lila-test-1.hpt stft only.hpl
Thank you for the help
Are you sure the o2 sensors are not crossed in the harness?
One bank is full lean and the other is full rich, that usually happens when the harness is routed wrong.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
i will go check tonight, I did not put this thing togetherjust trying to help out my son and his GF I will need to look at the wiring
Thank you
Yup you were correct thank you very much
Checked the wiring schematic and low and behold they were swapped. changed them and poof it actually runs and drives
Reply With Quote