[ScottSpeed21]

I have the AEM analog wideband gauge...the one with the needle....that stopped logging correctly for some reason. I had time today to tear apart my interior again and check all my wiring, and everything is correct as far as I know. I have the white analog wire from the gauge wired to the yellow wire coming out of the rear O2 sensor just like it's supposed to be, except when I start logging in Evoscan, all I get is a static 15.59 reading for AFR that never changes.

Is anyone else logging this wideband successfully? Again, it's the needle analog AEM gauge, not the digital readout.

 

[chetrickerman]

do a screenshot of the Evoscan settings for the rear O2 sensor

 

[ScottSpeed21]

 

[chetrickerman]

Put the eval you have into the MetricEval, and put AFR into the MetricUnit. Give that a try

 

[ScottSpeed21]

I think that's how I originally had it, but I just tried it again. No dice...

When I first started the car it was running slightly rich since it's cold out and the engine was cold. I started a log and it read ok for just a couple seconds, the readings changed like it was logging normally, and then it went back up to 15.59 and just stuck there. I know the wiring is ok, but it's almost acting like the readings are maxing out lean, and 15.59 is the upper max. It's just not reading what the gauge is showing. I don't know what's going on...

I was looking at the wiring diagram again...I have just the white wire (Analog Output +) hooked up to the rear O2 yellow wire. I wasn't sure about the brown wire (Analog Output -) if that needs to be hooked up to anything at all, or just grounded or what. It's not an easy, one wire explanation like the digital gauge...

 

[ScottSpeed21]

Reading > Me

I read through the instructions again one more time...I need to hook up the brown wire to a ground...dammit...

 

[wwEvoXgsr]

Sorry to bump this thread but logging with the analog aem wideband is possible as long you tap into the rear o2 wire correct?

 

[ScottSpeed21]

Correct