mr.skywalker

I have had this sensor for about two years(but under 5kmiles) and it has worked well but shortly after putting in my new engine(not really a factor I dont think) it has started giving trouble.

PS: I am running stock 91 ecu with new vvt engine but have a MS3 Basic ready to go in, I just didnt want to deal with trying to get it tuned and broke in at the same time

Now to the issues
As I was breaking in the engine it was wotking fine for the first few minutes then near the end(about 5min drive total) it would randomly just start showing afr of 22.4 but car was still running the same so I knew something was wrong with either the sensor or gage, not the ecu or engine. After letting it all cool down I started up the car and gage was working again but a few minutes later it happened again, stuck at 22.4. So after I tried to recalibrate but it would never have the indicator light go solid green meaning it never calibrated. Now it will never give afr reading since first attempt to recalibrate, it just flashes the old 7.4. I hooked up to logworks and it showed the heat up process stopped at about 14% and would not go higher no matter how long I let it sit.

I later tried a brand new sensor, same issue but stops at 19%. I am having a hard time finding anyone that has used logworks to diagnose an issue and this seems to me at this point that I may have a bad controller as a brand new sensor has the same issue.

Maybe I'm just need to talk to the people at innovate but maybe you guys know.

Leafy

iTrader: (1)

reflash the firmware, LC1 had the same issue. Firmware corruption.

Mech5700

How many flashes does the LED indicator throw on the controller? That will tell you what error is occurring.

mr.skywalker

That's what is confusing it isnt showing any errors, it just doesnt ever finish heating up and calibrating

I will try this today when I get home from work tonight

mr.skywalker

Well no success on the reflash/update to current firmware(it did need an update). Unfortunately it is still doing the exact same thing, not warming up past 20%. I'm shooting an email to innovate but anyone else have any ideas?

Edit: or call tomorrow since they dont have an email listed

Leafy

iTrader: (1)

bad ground? maybe.

mr.skywalker

Well I got it working. It wasnt exactly a ground but I checked for the voltage when I turned ignition on and it was just barely below 12v(bounced between 11.7-11.9). i thought I'd just check that it wasnt voltage so I hooked up a charger and the system has a solid 13.4 volts with ignition on and so i went through the calibration procedure and within a few seconds it was calibrated.

This is so annoying bc i literally just put a new battery in before even starting the car after the rebuild(within three weeks) and a new alternator when I bought the car a few years ago(driven less than 9k miles in that time). I will be checking to see if for some reason my battery voltage is getting low from poor alt performance or if it was just from a few days of sitting. Anyway now I can start preparing for installing megasquirt.

Thanks for mentioning the ground it got me thinking haha