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Old 05-19-2020, 04:15 PM   #1
Jwheelz
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Post Oxygen Sensors

Hello, first post. I have a 2013 Scion FRS and I recently had a motor swap. The engine has been running really rough and is currently running rich with a bunch of smoke burning out the exhaust. I suspect the problem is coming from the Oxygen sensors, but I need to know what the proper voltage specifications are for the Oxygen sensors? Does anyone know this info? Thanks.

Last edited by Jwheelz; 05-19-2020 at 08:37 PM.
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Old 05-19-2020, 05:57 PM   #2
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The O2 and MAF operate in a voltage range. The only way to really test them is resistance across the pins at a specific temperature.

https://demos.starbase7.net/t3Portal..._rm_index.html

Look under Engine/Hybrid System -> FA20 Engine Control and the inspection procedure for the Air fuel ratio sensor and the heated oxygen sensor.

I doubt this is your issue though.
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Old 05-19-2020, 07:54 PM   #3
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Quote:
Originally Posted by NoHaveMSG View Post
The O2 and MAF operate in a voltage range. The only way to really test them is resistance across the pins at a specific temperature.

https://demos.starbase7.net/t3Portal..._rm_index.html

Look under Engine/Hybrid System -> FA20 Engine Control and the inspection procedure for the Air fuel ratio sensor and the heated oxygen sensor.

I doubt this is your issue though.
Thank you NoHaveMSG! I found what I needed under air-fuel ratio sensor inspection.
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