LTFT Bank 2 stuck at -100
LTFT Bank 2 stuck at -100 This is on an LT1 using Autotap for logging and LT1Edit to program.
I just got the new engine running about a month ago. Desmogged, no cats, forged 355. Same injectors, fuel pump, and basic tune as before. I have modded the tune to delete the AIR, EGR & rear O2s, nothing more. At first, both STFTs and LTFTs for both banks were updating. Now, however, bank 2 is stuck at -100. I have tried resetting the PCM by pulling the fuse, reloading the same s/w load as before, and going back a version. Still stuck at -100. LTFT bank 1 is updating, and both STFTs are updating. This is for the last ~100 miles, and 2-3 hours of running.
Any suggestions would be welcomed.
I just got the new engine running about a month ago. Desmogged, no cats, forged 355. Same injectors, fuel pump, and basic tune as before. I have modded the tune to delete the AIR, EGR & rear O2s, nothing more. At first, both STFTs and LTFTs for both banks were updating. Now, however, bank 2 is stuck at -100. I have tried resetting the PCM by pulling the fuse, reloading the same s/w load as before, and going back a version. Still stuck at -100. LTFT bank 1 is updating, and both STFTs are updating. This is for the last ~100 miles, and 2-3 hours of running.
Any suggestions would be welcomed.
A good suggestion, I'll go look.
I just charted it out in Excel, and both sensors look about the same. The normal bouncing around from ~50 to ~870. That is how they used to look, so I assume they are doing their job.
I just helped a friend out the other week with his car, and his O2 sensors were "lazy". Staying at low voltages most of the time, occasionally bouncing up to ~900. Units in Mv, of course.
This is pretty frustrating, since I can't get on with my tune until this gets solved.
I just charted it out in Excel, and both sensors look about the same. The normal bouncing around from ~50 to ~870. That is how they used to look, so I assume they are doing their job.
I just helped a friend out the other week with his car, and his O2 sensors were "lazy". Staying at low voltages most of the time, occasionally bouncing up to ~900. Units in Mv, of course.
This is pretty frustrating, since I can't get on with my tune until this gets solved.
Trending Topics
Issue resolved I started working backwards based on the data I examined while investigating the comments in this thread. If the O2s were working, and both STFTs were working, it follows that the LTFTs have to work. So, I loaded a different config file into Autotap, and it started working correctly.
I loath that effing program, but it is the only one available to the bastard child OBDII LT1s.
Thanks to those who gave me the insight to work through this issue.
I loath that effing program, but it is the only one available to the bastard child OBDII LT1s.
Thanks to those who gave me the insight to work through this issue.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
