High Oxygen Sensor Voltage Preventing TTS V-Tune Data Collection
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Tourer
Joined: Aug 2008
Posts: 345
Likes: 3
Troubleshooting update.
As suggested, I adjusted my VE tables across the board downward by 20%. The oxygen sensors have now "woken up" and the TTS is able to collect good data. The voltages aren't pegged out at 1700 mV anymore. The voltages are now bouncing between 800 and 1600 kPa. The misfire issue that I was having appears to have gone away and the bike idles more smoothly now. I'm guessing that the VE's that I was using were so far off that cylinders were being flooded with gas and that is what was causing the misfires and high O2 sensor voltages. I'm still concerned that my MAP sensor may be going bad though because its still reading around 50 kPA.
The Tech at TTS told me that I should see O2 voltages between 600 and 1200 mV. The voltages that I'm seeing now are still a little high based on his numbers. For those that have a 2010 Touring bike, what type of O2 voltage swings have you seen on yours?
As suggested, I adjusted my VE tables across the board downward by 20%. The oxygen sensors have now "woken up" and the TTS is able to collect good data. The voltages aren't pegged out at 1700 mV anymore. The voltages are now bouncing between 800 and 1600 kPa. The misfire issue that I was having appears to have gone away and the bike idles more smoothly now. I'm guessing that the VE's that I was using were so far off that cylinders were being flooded with gas and that is what was causing the misfires and high O2 sensor voltages. I'm still concerned that my MAP sensor may be going bad though because its still reading around 50 kPA.
The Tech at TTS told me that I should see O2 voltages between 600 and 1200 mV. The voltages that I'm seeing now are still a little high based on his numbers. For those that have a 2010 Touring bike, what type of O2 voltage swings have you seen on yours?
Road Master
Joined: Jul 2006
Posts: 774
Likes: 60
From: here
Have you done a CamTune recording yet?
While idling (bike warmed up), record the CamTune data for 2-3 minutes.
This will tell you the optimum IVO setting for your bike. If you are already at the optimum IVO setting I would run a couple mini vtune sessions. Set your idle at 800, then do a vtune - just idleing around a parking lot. just off idle in 2nd-3rd gear and do slow roll-ons, up to 2K. Do this for a few minutes and then apply the changes to your tune.
Once you dial in this 800 - 2K RPM range, set the idle back to original settings.
Then monitor your idle Kpa - it will be what it will be at this point.
Now go out and do the rest of the vtunes...
While idling (bike warmed up), record the CamTune data for 2-3 minutes.
This will tell you the optimum IVO setting for your bike. If you are already at the optimum IVO setting I would run a couple mini vtune sessions. Set your idle at 800, then do a vtune - just idleing around a parking lot. just off idle in 2nd-3rd gear and do slow roll-ons, up to 2K. Do this for a few minutes and then apply the changes to your tune.
Once you dial in this 800 - 2K RPM range, set the idle back to original settings.
Then monitor your idle Kpa - it will be what it will be at this point.
Now go out and do the rest of the vtunes...
Road Master
Joined: May 2009
Posts: 992
Likes: 2
From: TN
I posted this over in the Ignition/Tuner/ECM/Fuel Injection arena first, but I got no responses there. Im hoping that someone in this more frequented arena will have some information for me.
I need some help please! I upgraded the stock 96ci engine in my 2010 SG with a Fuel Moto 107ci big bore kit with Fuel Moto CNC ported heads and Woods TW-777 cams. I've attempted several times to collect V-tune data for my new build with my TTS Mastertune, but Im having one heck of a time gathering valid Data Master V-tune data. I cannot get the Data Master program to exit the Waiting status and it appears to be related to the voltage of the oxygen sensors. According to the V-tune data, the voltage of each O2 sensor is reading at an average of about 1700 mV within the closed loop cells which indicates a rich fuel condition. I called TTS and the Tech that I spoke to said that the O2 voltage that I am seeing is way too high and that it should be in the 600-1200mV range for my particular year model bike. He also said that the O2 sensor high voltage is what is precluding me from collecting valid data. Here is what I have done so far for troubleshooting:
1. Replaced the exhaust gaskets
2. Replaced the front and rear oxygen sensors
3. Double, triple, and quadruple checked that the O2 sensors were inserted the right bungs on the head pipe and that the sensors are plugged into the correct sockets.
4. Loaded a tune file for a basic 96ci build to see if the lean fuel condition would result in lower mV readings.
Nothing has worked and I continue to get the same results. Randomly the oxygen sensors will wake up and start collecting data but then they will peg out again at about 1700 mV. Any ideas what is going on? The only thing that I havent tried is verifying the ground for the O2 sensors is good, but I havent figured out where that is yet. Any ideas what might be going on?
Also, if anyone has a Data Master V-tune file from a 2010 touring bike I would be very appreciative if you could send it to me. Im interested in seeing how your O2 sensors behave and what the voltages are.
Thank you in advance.
I need some help please! I upgraded the stock 96ci engine in my 2010 SG with a Fuel Moto 107ci big bore kit with Fuel Moto CNC ported heads and Woods TW-777 cams. I've attempted several times to collect V-tune data for my new build with my TTS Mastertune, but Im having one heck of a time gathering valid Data Master V-tune data. I cannot get the Data Master program to exit the Waiting status and it appears to be related to the voltage of the oxygen sensors. According to the V-tune data, the voltage of each O2 sensor is reading at an average of about 1700 mV within the closed loop cells which indicates a rich fuel condition. I called TTS and the Tech that I spoke to said that the O2 voltage that I am seeing is way too high and that it should be in the 600-1200mV range for my particular year model bike. He also said that the O2 sensor high voltage is what is precluding me from collecting valid data. Here is what I have done so far for troubleshooting:
1. Replaced the exhaust gaskets
2. Replaced the front and rear oxygen sensors
3. Double, triple, and quadruple checked that the O2 sensors were inserted the right bungs on the head pipe and that the sensors are plugged into the correct sockets.
4. Loaded a tune file for a basic 96ci build to see if the lean fuel condition would result in lower mV readings.
Nothing has worked and I continue to get the same results. Randomly the oxygen sensors will wake up and start collecting data but then they will peg out again at about 1700 mV. Any ideas what is going on? The only thing that I havent tried is verifying the ground for the O2 sensors is good, but I havent figured out where that is yet. Any ideas what might be going on?
Also, if anyone has a Data Master V-tune file from a 2010 touring bike I would be very appreciative if you could send it to me. Im interested in seeing how your O2 sensors behave and what the voltages are.
Thank you in advance.
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