Originally Posted by mattpietroski
Okay Bill,
Here we go again: Everything worked great for one day. The next day, I put the laptop in the car and drove to work (it is a 35 mile trip). The entire trip, the wideband read between 17.5 and 18, and I have it set to 5v = 18 AFR. So again, it is maxed out with no ground wire. After I got home from work I messed with the HPTuners and the LM LC1 programmer, I reprogrammed the wideband about 5 times, I re-calibrated it 3 times, I finally got it to read something other than 18 AFR, but now it is all over the place. When I let it idle it is anywhere from 12 to 18. I am wondering if somehow I am getting interference from the stock narrow band O2 sensor that is still in the car. When you look at the charts in the tuner, as the wideband varies up and down it seems to follow the same pattern of the stock O2 narrowband sensor. If I leave my configre the way that it is to log wideband, but unplug the logging wire from the MVPI Pro it reads a constant 12.06 AFR for the wideband, which at that point is not connected. I posted a copy of the scan, so that you can open it in HPTuners and view the chart display. In the chart display, the O2 wideband is all the way at the bottom. The narrowband is loated in cell number 4. If you keep you eye on both of them, you will notice what I am talking about. Let me know what you think, and what advisement that you would have from here. Thankyou again for all your help with this issue.
If I don't figure this out soon, I may just sell this and buy a different brand wideband. I looked in Innovate's forums, it seems like aot of people that had the LC1 said that they do not last and they have had alot of problems.