AEM UEGO wideband logging with EEHack

[Slikrider20]

Just got my wideband installed, powers up and displays correctly, but I can't get the logging to show up in EEhack.

I put a switch on my A/C pressure sensor as I still use A/C, and that seems to be working correctly as when I toggle the switch the readings on my A/C pressure go to some crazy negative number, and then back to normal when i toggle it back.

I'm using the white Analog wire to try and log. I have wideband enabled in EEhack and didn't touch any other settings. I did mess with the range adjustments some but all it would do on the dashboard is default to the low point and sit right there regardless of what my actual AFR gauge was reading. Is there something simple I'm missing here?

Brandon

[Slikrider20]

Stevo? Anyone?

[n8sh4de]

Hi, I had the same problem. The solution ist to ground the negative analoge 5V output of your AEM device. I think its the brown wire. And adjust your volt/lambda formula according to the AEM booklet.

I wish you success!
Max

[Slikrider20]

Hi, I had the same problem. The solution ist to ground the negative analoge 5V output of your AEM device. I think its the brown wire. And adjust your volt/lambda formula according to the AEM booklet.

I wish you success!
Max

A little confused..

There is the red power and black ground, and then a white analog and blue serial cable.

Are you saying I need to ground the unused serial cable? I'm tapping the white cable right into the A/C pressure sensor cable.

[Dirtybob]

Your wiring sounds correct, my car is wired the same way (with the same gauge) except the AC is deleted...

I did mess with the range adjustments some
After playing with my graphing calculator I found the best linear fit setting in eehack was 7.313:1 for the low point and 4.5v = 18.000:1 for the high point (accd to the info that came with the gauge).

[n8sh4de]

A little confused..

There is the red power and black ground, and then a white analog and blue serial cable.

Are you saying I need to ground the unused serial cable? I'm tapping the white cable right into the A/C pressure sensor cable.
Maybe we have different devices. At mine (AEM 30-0300) you have to to ground the brown wire at Pin10 to use the White analogue output at pin9.
Explained in Page 10: AEM Instruction Manual. - AEM Electronics
https://www.aemelectronics.com › 30-0300

[Slikrider20]

Yeah I have the 30-4110. I gave up and went back to my obd2 PCM. The obd1 PCM was starting to act screwy. Now I gotta figure out how to get it to work on that.

[Slikrider20]

https://i.ibb.co/jr40Wdj/Capture.png


Found this on the forums, I contacted kur4o but haven't heard back yet. Can anyone shed some light to me on how to actually input this information into a logger to get it to read?

[steveo]

Found this on the forums, I contacted kur4o but haven't heard back yet. Can anyone shed some light to me on how to actually input this information into a logger to get it to read?

what datalogger are you using? that's a really old post... if you're using eehack i implemented this finding of kur4o's in there years ago, simply select Pin D27 in the wideband input settings and away you go. Pin 27 was later discovered to be for a rarely used EGR position sensor intended for b-body cars, which is why there's no wire there most of the time.

[Slikrider20]

I'm obd2 so I wasn't having luck with eehack..

Using Ecm pro scan and torque. Basically I just need a pid to be able to add to get it to log..

[steveo]

you'd have to see if there's an obd-ii parameter ID for the EGR position sensor and then do some math (if the pin is even used in the obd-ii ecm, it might not be..)

pretty much nothing you read about software-wise for the obd-i ecm will work with your obd-ii thing. they're quite different

[Slikrider20]

It doesn't appear that it is used. I might just have to break down and use the A/C pressure sensor line, seems like my only option going through the stock PCM.

Might also try to find another obd1 PCM, really enjoyed using TunerPro and Eehack before the PCM went wack