MicroSquirt.com read only forum (Jan.15,2018)

I dont seem to be getting the right reading in MT from my O2 sensor.

I just got a new wideband O2 sensor and hooked it up. I was showing around 0.4V in MT.

I was getting this same problem before when i had my narrow band O2 sensor.

I have MSII V3.0. I did the calibrate AFR table in the tools menu, and selcted wideband in the EGO settings.


If i hook up my stimluator i get readings varying from .41 to .51 V. Shouldnt this be a bigger range with the stimulator?

Ok i did what lance suggested in an earlier post, ive been gone for a few weeks for work and i forgot about that post, setting the AFR calibrator to DIY WB, then turning it off and back on then setting it back to narrow band. This gets me a good reading with my stimulator from 0 to 1 volts.

When i switch to Innovative LC1 0-5 and do the calibrate AFR table i get .41 to .51 volts from the stimulator. I woudl think i shoudl still get 0-1 volts from the stimulator even with wideband selscted.
I also set the EGO control to single wideband.

Do i have to do anythign else to get the wideband to work? i read somewhere sayign that i need to set the configutor to wideband too, how do i do this?

Chrisfol82,

You have to do one more thing: go to the Configurator ('File/Configurator' in MegaTune), and under 'Settings.ini/settings' set the LAMBDA_SENSOR to your WB type.

MS-II doesn't report the voltage when a WB is selected, uinstead it reports the AFR directly.

Lance.

Well i was trying my wideband O2 sensor again today and it seems like its not working now. The computer wont even acknowledge it and if i try to go through the recalibration sequence i dont get any blinking from the LED like i did the first time.

So i decided id just put my narrowband back in and run that to see how it woudl run. Now it wont start at all. All it does is crank. I have all my settings right for the narrowband again and im using the same file that i used two weeks ago when it ran.

When it ran before though sometimes it would run good for a while then if id start it up again later it woudl run really rough and wouldnt even idle without giving it a bunch of gas.

I havent changed anythign since then and i cant figure out why before it woudl start to run rough and now it wont even start.

Oh and one other thing that has been happening that is wierd is after i crank it for a little while sometimes the fuel pump will stay on. I have to turn the key off and back on to get it to go off.

I was gonna try to attach a log of it cranking but i dont see how to attach a file, i must just be missing something here cause i knwo ive posted logs before.