Hey guys, first post here and first time using a standalone so I am sorry in advance for not knowing everything. I couldn’t find much in the search function, so I figured I’d post something.
I am using a EMU Classic with PNP on my JZX90 swapped BMW. I just got my Bosch 4.2 LSU installed, and I am not getting a lambda reading and my AFR is stuck at 14.70. I’ve been searching far and wide across the internet but can’t figure out anything on where to troubleshoot. I saw the ECUmaster troubleshooting document and went through those steps, but no luck. Anybody have any tips on where to start and what could be wrong here? I am getting power and have good connection to ground, and the heater circuit seems to be getting resistance just fine.
Any help would be greatly appreciated, I can’t think what else to mess with
8/10 wideband issues are a wiring problem. Make sure you’re looking at the pinouts the correct way, EMU side is looking at the ecu itself (also called wire side of connector) and the 4.2 connector the pin #'s are labled.
share your settings for O2 sensors, could be a simple setting. A log would also help, you can see the wideband go through it’s warmup and after about 1 minute ish it should start reading. There’s a log parameter called ‘lambda is valid’, this comes on when the sensor is warmed up and reading correctly with no errors
Yeah that makes sense that it is likely a wiring issue. I just can’t figure out for the life of me what the issue might be. Parameters look like what everyone else sets them up as, and the log basically just shows no data coming in. I have double and triple checked my wiring, I can’t find any issues but maybe you’d know other things to check.
Seems like there isn’t any reading of there being a sensor, I am not getting any data like it shows in the troubleshooting logs. My thought with that is that likely I messed up wiring somewhere, possibly not getting 12v or not connected to ground? I was also wondering if that could mean a bad sensor itself?
12V and ground are just for the heater, the other 3 wires are more critical for calibration. (classic doesnt use the Rcal wire)
Can you post the log file? the WBO VS, IP traces etc can help.
I’d triple check your wiring and if you haven’t measured the Rcal value (assuming you did to get the value of 132) do so while you’re there.
