Help with O2 Sensor

[KMoore68]

Hi,

I have a 1977 911 S that I have completed an install of Triumph ITBs with EFI with a MegaSquirt ECU V2 3.57

I am having an odd situation with the O2 sensor hookup that I'm hoping for some help with.

I have the Innovate controller wired to a 12 V switched power, confirmed with a multimeter and I have the Yellow wire on the controller connected to wire #23 (Purple) wire on the loom for the ECU, the black wire from the controller is connected to the ground on the fuse box I installed for the EFI install.

This is a brand new O2 sensor that has been run for about 30 minutes yesterday and was showing appropriate AFR readings. I replaced it because the original O2 sensor was showing the same behaviour and I figured it was bad.

Now when I turn the car on, the AFR is showing 22.3 the car off. I disconnected the controller and went through a re-calibration process. The controller is showing a solid green, and the O2 sensor is in free air (not installed in the SSI) and the AFR is showing 22.3 again.

I'm kind of stumped, any ideas?

[Showdown]

Maybe the controller is bad- check with the manufacturer to see if they have a bench test protocol.


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