Oyxgen Sensors [Archive] - Toyota MR2 Message Board

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well i was wondering were exactly were all the o2 sensors located at, because my sisters spyder, check engine light is on, so i took it to toyota and they said it was an 02 sensor, like the one under the exhaust manifold, but im not exactly sure where they are all located and if you could tell me and how hard are they to get to.