why does my Volvo XC60 Second Generation (2018-2024) have poor fuel economy

Solution

1. Preparation

• Gather required tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the battery to ensure safety during repairs.

2. Replace Air Filter

• Locate the air filter housing (usually in front of the engine).
• Remove the clips or screws securing the air filter cover.
• Take out the old air filter and clean the housing if necessary.
• Insert the new air filter and secure the cover back in place.

3. Inspect and Replace Spark Plugs

• Remove the ignition coil or wire connected to each spark plug.
• Use a socket set to unscrew the old spark plugs.
• Inspect the old plugs for wear; replace them with OEM standard plugs.
• Torque the new plugs to the manufacturer’s specified value (usually around 15-20 ft-lbs).
• Reconnect the ignition coil or wire.

4. Check and Replace Fuel Filter (if applicable)

• Locate the fuel filter (check the owner's manual for specific location).
• Relieve fuel system pressure before removal by removing the fuel pump fuse and running the engine until it stalls.
• Disconnect the fuel lines from the filter, carefully capturing any spilled fuel.
• Install the new fuel filter, ensuring the flow direction matches the markings.
• Reconnect fuel lines and ensure there are no leaks.

5. Assess and Replace Oxygen Sensors (if needed)

• Locate the upstream and downstream oxygen sensors (usually near the exhaust manifold).
• Use a wrench to unscrew the faulty sensor.
• Install the new oxygen sensor, ensuring it is tightly secured.
• Reconnect the electrical connector.