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There are 4 02 sensors. For the 5.4L engine, Bank 1 sensors are on the right side exhaust, sensor 1 is in front of the catalytic convertor (tucked up between converter and the manifold joint). Sensor 2 is in the exhaust pipe behind the resonator (?-I'm really not sure if this is a second cat. conv., resonator, muffler or what...). The Bank 2, sensors 1 & 2 are in the same positions on the left side of the vehicle, but sensor 1 is a little easier to access. That's MY QUESTION: Can anyone tell me how to access Bank 1, Sensor 1??? I can see it, and I've unplugged it (with a little difficulty), but I can't get a wrench on it!
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∙ 18y ago
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