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How to replace a O2 Sensor?


boulevard

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Car: Chevrolet Lumina Z34 1993 Auto

 

Problem: Need to replace O2 Sensor

 

What is the best recommended method to replace this oxygen sensor? From the bottom looks impossible, from the top looks better but do I have to remove the plenum? What the best way? Thank You!

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I just changed my O2 on my '92 Z34. I pulled the plenum..got in there with an O2 socket+swivel+extentions. Be prepared to go through MULTIPLE swivels. I broke 4 craftsman swivels. Must have been the original O2 sensor. Anyway, Pulling the plenum and going from the top is way easy. Hardest part is breaking the sensor free.

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