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Discussion Starter · #1 ·
I just changed the Upstream O2 sensor.I couldn't find any online instructions for replacing it.

Here goes

Jack the car appropriately

Both the upstream and downstream O2 sensors wire into a black junction box near the passenger side
remove the box
Unclip the black upstream O2 sensor
Pop the hood.
On the backside of the engine is the o2 sensor, its midway down the backside and easily accessible
Pull the wire you disconnected up to you, use a 22mm o2 sensor socket, remove the sensor

Install new sensor with anti seize, route wire back down to junction box.
Reinstall junction box
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