A couple of days ago my Innovate LC-1 started reading between 10-11 AFR (18-22%), all the time. I've tried recalibrating to no avail. This is following 5 months of correct operation.

I _never_ use leaded gas. It is wired as per vishnu's install directions.

Ideas?

d

 

Mine weirded out on me the other day when i was installing gauges and stuff in my car. i had my XD-1 gauge in and out, and the car on without the XD-1 connected, etc.

anyway after i got everything plugged back in and took the car for a drive, my XD-1 was reading an AFR of 4 to 5 all the time.

long story (and a bunch of troubleshooting) short, i connected up to the LC-1 with LM Progammer, and the AFR calculation was wayyyy off. in the software you usually leave it set to 'Gasoline, 1.4.7:1' well mine was set to something crazy like 'Custom, 293:1'. i dunno how the hell it got like that, i assume since i was messing around with the XD-1.

anyway, i reset the AFR calculation to Gas, and it was back to normal.

in summary, connect up to the LC-1 with the Programmer, and check that its set right.

 

oh, freedom's LC-1 just went bad too. maybe yours is just on the way to dead.

https://www.evolutionm.net/forums/sh...6&postcount=13

 

Ok, so the Logworks is seeing the correct values. Therefore the LC-1 itself is working properly. However, the Xede is seeing totally farked voltages that barely ever change.

d

 

Make sure the signal wire for the wideband in pushed in all the way into the XEDE connector. I know, i know. But it wouldn't be the first time i've seen that happen

Shiv

 

I don't think that was it, but you were on the right track. I pulled everything apart to look for a short. After giving the LC-1 wire a little tug and some more slack to keep it from accidentally getting pulled out, everything works again. Yay!

d

 

Dang, all that just for a loose wire. I must have been a little further along in the troubleshooting process than you.

oh well, maybe it will help someone else

 

 

I don't think that was it, but you were on the right track. I pulled everything apart to look for a short. After giving the LC-1 wire a little tug and some more slack to keep it from accidentally getting pulled out, everything works again. Yay!

d

EDIT: I should also mention how reassuring my datalogs are. I have several runs up and down the freeway with the LC-1 reading silly rich. SMART tried to pull a little fuel, but not enough to hurt everything. Even on 91 the logs are completely knock free.

 

Well I checked befored I asked. Everything "looked" like it was connected properly. Obviously it wasn't. Also, the values I was getting didn't make much sense for a broken connection as it was about 1.4v and very steady.

d

EDIT: The really funny part was how I spent like two hours thinking it was a bug in pyxede. I stared at that code just about the whole evening trying to figure out how such a simple function (reading the AFR) could be broken.

 

If there is a loose connection or a short somewhere, i believe the XEDE will default to a stable voltage (1.4v sounds about right, from what i remember).

shiv

 

For those of us who don't have a LC 1 AFR reading how would we know if things are working correctly.

 

For reference per Innovate if you short the analog output of the LC-1 to ground, even for an instant, it will kill the digital to analog converter. Thus it is very unlikely you shorted the output as there are a number of LC-1's posted on Innovate's forum where the owner shorted the output, killed the analog output and was forced to return the unit for service. Note that it is stated that the output can only support 50 mA.

In reference to the loss of the lambda to AFR setting, this problem occurred on my LC-1 just once for no good reason. I didn't even disconnect anything and I don't have their display. Another think I found out is that the LC-1's computations are done in Lambda. The lamba to AFR factor needs to be correct or strange things will occur in Logworks and the programmer application if one used AFR to setup the analog output.

This information is also informative as it tells us how the LC-1 really works. It is really a digital device and only constructs an analog output to replicate an older style wideband device. Thus the reading given by Logworks should match the analog output, assuming a good ground reference (e.g. zero volts), etc.

To be honest I really hope my failure was a very low probability event as pulling the sensor and controller is not something I want to do every few months. I'm of the mind that OEM lasts and lasts, where some after market hardware is nothing but trouble. The Xede is an exception. It has run for so long without issue that I would have to look at the bill to remember when I installed it.

 

In the Live Data display of XMap, you should see the bar graph moving up and down as you accelerate and decelerate. I think AFR is AN1 but i forget now.. It wont show you any numbers that you will recognize, but if you get a good range of movement you should be getting a good signal. If its not moving, or moving very little, something is wrong.


EDIT: You have SMART, and you want to know that it is working correctly, right?

See here: http://www.vishnutuning.com/Smart/fi...nd_wrap_up.htm

 

Update:

something is definitely fscked. I got up this morning to go to work and voltage from the analog output on the LC-1 has dropped to zero. It still works find through the serial line, but the Xede is seeing < 0.2v. I checked with a multimeter. *sigh*

d