Fix It

The job of your Volvo S80s oxygen sensor is to regulate the fuel and air ratio in your car. It also controls your gas mileage. If the oxygen sensor malfunctions, your S80 will run poorly, and its gas mileage will decline. With a few tools, most people can replace the oxygen sensor safely.

Instructions

1

Locate the oxygen sensor on your pre-catalytic converter. It is near the right front wheel well of your S80.

2

Detach the two small air intake pipes by hand from the air box and from the blowoff valves. Twist off the large air intake pipe as well from the air box and the rear turbo. This provides access to the oxygen sensor. Spray WD-40 over the existing oxygen sensor to make it easier to remove.

3

Use the 7/8-inch wrench to remove the failed sensor. Locate the stock sensor wire near the engine lift loop near your engines firewall. Connect the ends of the stock sensor wire to the new oxygen sensors wires using the crimp connectors.

4

Rub a small amount of anti-seize paste onto the new oxygen sensor threads. Do not get any paste on the sensor itself, because that could cause it to fail. The paste will make removal easier the next time.

5

Screw in the new oxygen sensor, and tighten it enough with the wrench that it cannot be loosened easily. Reattach the air pipes to the valves.

The 2002 Volvo S80 features a keyless remote that allows the owner to lock and unlock the vehicle from afar as well as open the trunk. There are situations, however, such as when the battery of the vehicle is dead, in which the keyless remote will not work. In these cases, the owner may access the trunk manually with a key or through the passenger compartment.

Instructions

Using a Key

1

Remove the black cover to the right of the handle cover on the trunk of the vehicle. This will reveal a manual lock.

2

Insert the key into the lock and turn it to the right to unlock the truck.

3

Use the manual to open the trunk.

Accessing the Trunk from Inside

4

Reach behind the back seat to access the trunk.

5

Pull the release control handle on the inside of the trunk to release the backrest. This may be somewhat difficult as you have to feel around for the control handle.

6

Fold the backrest down. You now have access to the trunk. If it is too dark to see inside the trunk, use a flashlight.

7

Pull down the florescent handle on the inside of the trunk lid. This will open the trunk.