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Discussion Starter · #1 ·
I installed a new O2 sensor on my header the other day, and now that I've done that my air fuel moniter reads fully rich at all times, at idle, acceleration, and cruising. it never comes down at all. It was a NTK O2 sensor and plugged right into the stock plug so it wasnt a universal one or anything. If anyone has any suggestion lets let me know.
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You might to check to ensure your Air/Fuel monitor is operating correctly. Resetting the ECM is good (although you should have the battery disconnected when you switch sensors anyhow...). Also, if you have any sort of add-on fuel modifier (fuel pressure regulator or S-AFC, etc....) set those back to a stock setting then adjust once you get it levelled out.
 
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