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Senior Member
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Join Date: Jun 2020
Location: Charlotte
Posts: 1,547
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Senior Member
Join Date: Jun 2020
Location: Charlotte
Posts: 1,547
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the spacer on this side is spacing the o2 sensor out too far and you're not picking up any readings to the sensor at partial throttle which is making the ECU think the sensor is faulty. What I did when I had a similar issue to bypass a failing cat is cut down the sensor spacer a bit to get the o2 sensor a bit more down into the exhaust stream until it started reading exhaust flow at lower throttle inputs.
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2003 Limited V8 4runner - 37's, Tacoma Front End swap, ARB locked front and rear , LC200 rack swap
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