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Re: `98 Protege o2 sensor location?
I have a 99 and they did a lot of major changes during the model year change. I'd find the two plugs for your O2 senors (where they connect to the harness), they should both be clipped beside one another on a support. Follow the wires back for the rear sensor. With the 99 the front sensor is on the exhaust manifold and the rear sensor is on the pipe coming off the catalytic converter. The pipe is directly below the engine and the splash guards have to be removed to see it.
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