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Where is an 02 sensor located on a 1990 pontiac firebird: need diagram?
Wiki User
∙ 14y ago
You just have to look for it. It's not hard to find on that car. look on the drivers side exhaust manifold. And there's only one. Ok, If the '90 is anything like the '89 the O2 sensor will be inside the engine air intake but after the air filter which is located on the passenger side of the vehicle, opposite the battery. Theres a large air tunnel you could fit your hand into that runs from the air filter, settles over the and behind the radiator then goes directly into the engine. The O2 sensor is located immediatly after the filter. Good luck man
Wiki User
∙ 14y ago
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