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Changing oxygen sensor..........


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Posted

I have a 90' cs with a 3.1, What i need to know is where is the o2 sensor?how did you replace it, what size wrench did you use to take it off? pics would help if possible. thanx

Posted

Its probably on right behind the rear exhaust manifold. If you go to your local auto zone, they will let you borrow an oxygen sensor socket for a deposit that is refunded when you return it.

Posted

Yeah, its in the middle of the rear manifold. Rock the motor forward, it'll make it easier, use a 7/8" IIRC box end wrench to get it off, and unplug the connector. Install is the reverse of the above

Posted

Correctamundo on the 7/8" wrench. They can really be a beeotch to get off sometimes, so maybe some double wrenching or prybars will be in order as well.

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