Can't get AFR to read. O2 WB sensor is good.

[jaeger22]

Ok another newbe question here. I am stuck again. I have an innovate WB O2 sensor and Gauge that has been working fine for months. But I cant get MS to play with it. I thought this would be the simplest hook of all, one wire, and the O2 sensor is one of the ones that is listed in TS, but so far no luck. I expect it is another set up issue but I have about run out of things to try. The sensor is good, I get good readings on the wire but the gauge seems t be frozen at around 19 AFR. If I calibrate and select different sensors or manually set up a range, it changes to a new set point on the gauge but never moves after that.
Here is my set up. MicroSqurit V3.0, running V3.77 SW. TunerStudio latest version and registered.
The target is a 2008 Suzuki DR650 single cylinder motorcycle. I am going for fuel only, at least for now.
I have RPM, CLT, IAT, TPS, and MAP hooked up and all read fine. I have WB LM-1 selected for EGO setup and for the calibration table.
Any ideas?
Thanks in advance,
John

[dontz125]

I'm not sure how the Innovate gauges work, but do you have an actual WB O2 controller, or just the sensor? Narrow-band sensors can be wired directly to the uS input, but a WB needs a separate box.

[jaeger22]

Thanks for the reply, on Christmas even!
Sorry I should have been more specific about the sensor. I have the full system, sensor, gauge and controller and have had it for some time, using it to tune the carb. It is an Innovate MTX-L Wide band and it provides 0 to 5V out for AFR 7.35 to 22.39 on the white wire out of the controller. Also I have the MS and the Innovate controller wired to heavy grounds tied back to the battery so I think I can rule out grounding issues. I am reading around 13 on the Innovate gauge at warm idle and with the volt meter I see just above 2 Volts on the wire from the Innovate controller to the MS O2 input (Pin 34 ). I believe this is exactly right. The reading I see on the TS AFR Gauge is around 18.5 AFR which would be right for about 4 volts in. But it is frozen at that reading and not moving around a little like the Innovate gauge reading.
Thanks again for the response and for any ideas you can offer. I have been like mad but so far found nothing that helps yet. I am sure it is something dumb in my set up but I think I have looked at every possible set up value and tried experimental changes but with no positive effect.
John

[24c]

I wonder if this a TunerStudio question, maybe a mod could move it, and then Phil aka LT401vette might pick it up.

[kholman]

Real subtle. ;)
Can't be moved from the moderator end as there are two separate databases driving two different forums so complicated at best. If its a Tunerstudio question, best just to post it there.

[jaeger22]

Thanks Guys, I was wondering how to move it. I will post on the TS forum but still not sure it is a TS problem. I expect TS is displaying what it sees as I can make it change by loading different AFR tables. Just never right or any movement. I will see what Phil says, he has helped be before.
Thanks again.

[Matt Cramer]

Are you getting RPM? The code has an O2 sampling routine that's keyed to RPM, and zero RPM means zero sampling - a frozen O2 gauge, in other words.

[jaeger22]

Matt, yes RPM is good. I should have mentioned that. I pulled the carb off yesterday and am now in the process of installing the TB, FP, and Pressure Regulator. With any luck I will get to hear it run today or tomorrow.
I don't think the lack of AFR will hurt for now but it worries me that something is wrong.
Melting down my motor on first start up would be considered sub optimal.

[Matt Cramer]

What sort of voltage are you seeing on the O2 input wire, and what AFR is the MicroSquirt showing with it?

[jaeger22]

Matt, thanks for responding again.

I am reading around 13 on the Innovate gauge at warm idle and with the volt meter I see just above 2 Volts on the wire from the Innovate controller to the MS O2 input (Pin 34 ). I believe this is exactly right. The reading I see on the TS AFR Gauge is around 18.5 AFR whict would be right for about 4 volts in. But it is frozen at that reading and not moving around a little like the Innovate gauge reading.

I should also note to avoid confusion that I was still running with the carb but did have the TPS hooked up and got good reading.
John