10-30-2012, 10:42 PM
Join Date: Jun 2009
Total Cats: 0
ECM w/ EMU cannot see narrowband o2
Hi all - I am hoping that you can direct me to the best path forward.
I'm running a EMU with an AEM wideband. I presently cannot pass OBD-II readiness, as the stock computer literally cannot see the narrowband o2 sensors.
Is my EMU getting in the way?
I know that the O2 is good, as I just replaced it.
I am using OBD-Link, and the O2 sensor shows nothing....
Also - I know that the O2 sensor is not being seen, as it is OBVIOUS when the ECM kicks inot closed mode - hunting idle / choking / etc.
I have plugged up the EGR port - but if that was the issue, I would think that I would get a rightful EGR code...besides, that test is run later, after o2 check.
Could I be missing a ground? I know that the ribbon strap is in place. Should I ground the exhaust again? Maybe a ground at the ECM?
Please advise - very confused.