What would cause LTFT Bank 2 to always read -100?
06-21-2007, 10:59 AM
#1
What would cause LTFT Bank 2 to always read -100? I am working on my car for SD tuning as outlined in the Tuning documents at the front of this section, using LT1Edit to program, s/w AutoTap V3.10 with enhanced parameters, h/w ATU USB for scanning.
For some time now, both LTFTs have read about the same, so I stopped watching LTFT Bank 2. This week, I started watching it, and it is always set to -100. LTFT Bank 1 appears normal. I did multiple runs, just to verify that it was not a fluke. I then loaded a previous ECM file, which had worked just fine. It also shows -100 on just LTFT Bank 2.
Any clues would be appreciated.
For some time now, both LTFTs have read about the same, so I stopped watching LTFT Bank 2. This week, I started watching it, and it is always set to -100. LTFT Bank 1 appears normal. I did multiple runs, just to verify that it was not a fluke. I then loaded a previous ECM file, which had worked just fine. It also shows -100 on just LTFT Bank 2.
Any clues would be appreciated.
06-21-2007, 02:00 PM
#3
Originally Posted by koolaid_kid
I am working on my car for SD tuning as outlined in the Tuning documents at the front of this section, using LT1Edit to program, s/w AutoTap V3.10 with enhanced parameters, h/w ATU USB for scanning.
For some time now, both LTFTs have read about the same, so I stopped watching LTFT Bank 2. This week, I started watching it, and it is always set to -100. LTFT Bank 1 appears normal. I did multiple runs, just to verify that it was not a fluke. I then loaded a previous ECM file, which had worked just fine. It also shows -100 on just LTFT Bank 2.
Any clues would be appreciated.
For some time now, both LTFTs have read about the same, so I stopped watching LTFT Bank 2. This week, I started watching it, and it is always set to -100. LTFT Bank 1 appears normal. I did multiple runs, just to verify that it was not a fluke. I then loaded a previous ECM file, which had worked just fine. It also shows -100 on just LTFT Bank 2.
Any clues would be appreciated.
https://ls1tech.com/forums/showthrea...=732026&page=2
06-21-2007, 02:39 PM
#4
Originally Posted by 12secSS
Try deleting that pid and re-inserting it. It is a known glitch when scanning some cars. Good luck! 
I also went out for another data logging session prior to these posts, and it was still at -100. I then plugged the MAF back in and deleted the DTC. It then went down, so I thought it was fixed. However, upon reviewing the log file, what it actually did was go down to -4 and stick there.
06-21-2007, 02:42 PM
#5
Originally Posted by 94-6spd
I am having a similar problem. Have you tried unplugging the O2 sensor to see if it reads the same. When I do mine it reads the same as if they are hooked up. Here is my thread.
https://ls1tech.com/forums/showthrea...=732026&page=2
https://ls1tech.com/forums/showthrea...=732026&page=2
06-21-2007, 03:58 PM
#6
Problem solved
Originally Posted by 12secSS
Try deleting that pid and re-inserting it. It is a known glitch when scanning some cars. Good luck!
