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2003-2008 Pontiac Vibe Air Fuel Sensor Replacement

If your 2003-2008 Pontiac Vibe suffers from...

iFixit Library 2002-2008 Pontiac Vibe Moderate 30 - 45 minutes Guide 146076

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Guide overview

Before you begin

If your 2003-2008 Pontiac Vibe suffers from symptoms like shaking or vibrating, engine rattling, increased gas mileage, or increased exhaust emissions, there’s a chance you need to replace the air fuel sensor. This guide will help you replace the air fuel sensor on your 2003-2008 Pontiac Vibe. You will need an air fuel sensor, a socket wrench, and an O2 sensor socket for this repair. Important note: your car must be completely off to complete this repair!

Step 1

Repair step

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WARNING: Hazardous situation which, if not avoided, could result in death or serious injury. Make sure the engine is off!
Open the hood and locate the old air fuel sensor.
The air fuel sensor is located above the catalytic converter (upstream).

Step 2

Repair step

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Disconnect one end of the old sensor by pressing the button. The circle in the first image shows the button.
The tab can be hard to remove! You may need to use a screwdriver to disconnect it.
Listen for an audible click.

Step 3

Repair step

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Take the 5-point O2 sensor wrench and socket and put it on the other end (downstream) of the old air fuel sensor.
Turn the wrench counterclockwise until the old air fuel sensor detaches.
Pull out the old air fuel sensor.

Step 4

Repair step

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Locate the new air fuel sensor.
Locate the tube of anti-seize lubricant that came with the new sensor.
Apply the oil lightly to the threads.
The oil is named DENSO oil. It will lubricate and provide protection for the threads (circled in the first picture).
Use gloves to protect your hands!

Step 5

Repair step

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Insert the newly oiled air fuel sensor.
Tighten the sensor with the O2 sensor wrench.

Step 6

Repair step

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Connect the tab to the upstream.
You will hear a click once the tab is connected to the upstream.

Step 7

Repair step

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Turn your ignition on.
Check your dashboard to see if the check engine light is still on.
If the light is still on, turn the car off and wait a few minutes. Then turn the car back on and check the light again.
If the check engine light is still on, then use a code reader to see what is wrong with the car.