Replacing The Fuel Pump In A 1999 Volvo S80

If you're looking to replace the fuel pump on your 1999 Volvo S80, you'll first need to remove the back seat to access the access panel covers. Be aware that you'll need to remove both access panels under the back seat, and that you may need to drain the fuel tank. Once you've done this, you'll be able to see the top of the fuel pump module on the passenger side of the car. In order to replace the pump, you'll then need to remove the lock nuts on both sides of the car, which may require a special tool. With the lock nuts removed, simply pull the fuel pump out through the passenger side hole in the gas tank.

Remove the back seat to access the fuel pump

To remove the back seat of a 1999 Volvo S80, you will need to access the rear seat backrest. First, remove the insulation and fold back the floor carpet in the cargo compartment.

The side cushion is a challenge to remove. You will need to reach under and push the centre spring clip upward with a strong finger, then pull the cushion backward/upward to the rear.

Once the back seat is removed, you will see the top of the fuel pump module on the passenger side of the car and the top of the second sending unit on the driver's side.

Remove the access panels under the back seat

To remove the access panels under the back seat of your 1999 Volvo S80, you'll first need to remove the back seat itself. This will give you access to the access panel covers.

Removing the back seat

Start by removing the rear seat backrest. You'll also need to remove the insulation and fold back the floor carpet in the cargo compartment.

Draining the fuel tank

Next, you'll need to drain the fuel tank. To do this, you'll need to remove the cover over the fuel level sensor. Disconnect the connector and remove the circlip for the level sensor using a special tool. Pull the level sensor up, and disconnect the two connectors from the level sensor. Remove the ejector by pressing down on the catch.

Removing the access panels

With the fuel tank drained, you can now remove the access panels under the back seat. Once these panels are removed, you'll see the top of the fuel pump module on the passenger side of the car and the top of the second sending unit on the driver's side.

To replace the fuel pump, you'll need to remove the lock nuts on both sides of the car, which will require a special tool.

Remove the lock nuts on both sides of the car

To remove the lock nuts on both sides of the car, you will need a special tool. Unfortunately, I am not aware of any aftermarket manufacturers that make one. However, if you can figure out a way to remove them, you simply pull the fuel pump and sending unit out through the passenger side hole on the gas tank.

First, remove the rear seat backrest and the insulation. Fold back the floor carpet in the cargo compartment. Then, drain the fuel tank.

To remove the fuel level sensor, follow these steps:

• Remove the cover over the fuel level sensor.
• Disconnect the connector.
• Remove the circlip for the level sensor using a special tool.
• Pull the level sensor up. This is easier if the fuel lines are bent upwards through the hole.
• Disconnect the two connectors from the level sensor.
• Remove the ejector by pressing down the catch.

Now, you can remove the lock nuts and proceed with replacing the fuel pump.

Drain the fuel tank

To drain the fuel tank of your 1999 Volvo S80, you will first need to remove the rear seat to access the access panel covers. Remove both access panels under the back seat. Once removed, you will see the top of the fuel pump module on the passenger side of the car.

Next, remove the cover over the fuel level sensor. Disconnect the connector. Remove the circlip for the level sensor using a special tool. Pull the level sensor up. This is easier if the fuel lines are bent upwards through the hole. Disconnect the two connectors from the level sensor. Remove the ejector. Press down the catch and remove the level sensor.

Now, you can drain the fuel from the tank.

Disconnect the fuel level sensor

Disconnecting the fuel level sensor on a 1999 Volvo S80 can be a complex process. Here is a step-by-step guide to help you through the process:

Step 1: Remove the Back Seat

First, you will need to remove the back seat of your Volvo S80 to access the fuel pump and fuel level sensor. This will involve removing the rear seat cushion and any necessary clips or bolts that hold it in place.

Step 2: Locate the Fuel Pump and Fuel Level Sensor

Once the back seat is removed, you will see the top of the fuel pump module on the passenger side of the car. The fuel level sensor is typically located on the driver's side of the fuel pump.

Step 3: Disconnect the Wiring Harness

Before removing the fuel level sensor, you will need to disconnect the wiring harness that connects the sensor to the vehicle's electrical system. This will ensure that you do not damage the sensor or any related components during removal.

Step 4: Remove the Fuel Level Sensor

The fuel level sensor is usually secured to the fuel pump with some type of fastener. You may need to use a special tool to remove the sensor, as it may be difficult to access. Consult your vehicle's repair manual or a trusted mechanic if you are unsure about the specific tool required for your model.

Step 5: Install the New Fuel Level Sensor

If you are replacing the fuel level sensor, make sure you have the correct replacement part for your vehicle. Install the new fuel level sensor by securing it to the fuel pump and reconnecting the wiring harness. Ensure that all connections are secure and properly routed.

Step 6: Reinstall the Back Seat

Once you have successfully disconnected and/or replaced the fuel level sensor, you can reinstall the back seat of your Volvo S80. Make sure that all bolts and clips are tightened securely and that the seat is properly aligned.

It is important to note that working on fuel system components can be dangerous, and it is always recommended to consult a qualified mechanic or seek professional assistance if you are unsure about any part of the process.

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