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Add Wideband O2 to LT1 PCM

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Hitmarksman

The EGR system on my car has been deleted, that's why I am using the A9 pin.

1995 PCM pinout charts: http://shbox.com/1/4th_gen_tech2.html...

How to depin the PCM:    • How to Take Apart a PCM ECM Connector...   (The PCM itself is different, but the connectors are nearly identical)

The Wideband O2 sensor I used: https://www.aemelectronics.com/produc... (the white wire is the 05V Analog Output Positive+ that is added to D27, and the brown wire is the 05V Analog Output Negative that taps into a Sensor Ground, either B6 or B16)

The taps I used: https://www.crutchfield.com/p_669PP64...
How to use them:    • How to tap into a wire using PosiPro...  

In order to power the sensor, I tapped into the Ignition/Switched 12V POWER (red) and GROUND (black) wires going to my stereo. For my sensor, it calls for a 5amp fuse on the power wire, so I added an inline fuse like the one here between the stereo's power wire and the *sensor's power wire: https://shorturl.at/kpvT1.

Everything is tucked up behind the passengerside kick panel beneath the glovebox. To route the wires into the engine bay behind the PCM, there is a rubber grommit in the firewall tucked up behind the wires on the top right. Pull the grommit out, route the sensor connector and the white and brown wire bunch through the hole. Here's how to remove the kick panel:    • F body Dashboard removal Camaro / Fir...  .

posted by Nkwer1