
If you're looking to locate the fuel filter in a 99 Subaru Outback Legacy, you've come to the right place. The fuel filter is located inside the fuel tank, and is part of the fuel pump module. To replace it, you'll need to disconnect the fuel pump from behind the backseat on the passenger side, and then idle until the tank is empty before disconnecting the battery. It's recommended to have a cup and some rags ready to catch any fuel that spills out when you disconnect the hoses. Additionally, it's important to disconnect the battery and wait for the car to cool before changing the fuel filter. If you're experiencing poor gas mileage, a clogged fuel filter could be the culprit.
| Characteristics | Values |
|---|---|
| Fuel filter location | Inside the fuel tank, behind the backseat on the passenger side |
| Tools required | Fuse puller, Phillips screwdriver |
| Maintenance | Recommended every 15,000 miles |
| Fuel pump fuse | Not present in 99 SUS models |
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What You'll Learn

The fuel pump assembly is located inside the fuel tank
The fuel pump assembly in a 1999 Subaru Outback Legacy is located inside the fuel tank. To replace the fuel filter, you will need to remove the pump from the tank. The access panel for the fuel pump is located beneath the rear seat, on the passenger side.
- Disconnect the fuel pump from behind the rear seat on the passenger side.
- Idle the vehicle until it runs out of gas, and then disconnect the battery.
- Remove the rear seat to access the fuel pump assembly located beneath it.
- With the rear seat removed, you should be able to see and access the fuel pump assembly inside the fuel tank.
- Replace the fuel filter as per the OEM service manual instructions.
It is important to note that the fuel filter in a 1999 Subaru Outback Legacy is a large volume filter, so you can expect some spillage when replacing it. It is recommended to have rags and a cup ready to catch any fuel that may spill. Additionally, always disconnect the battery before performing any work on the fuel system to ensure safety.
By following these steps, you will be able to access the fuel pump assembly and replace the fuel filter in your 1999 Subaru Outback Legacy.
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Disconnect the fuel pump from behind the back seat
To disconnect the fuel pump from behind the back seat of a 1999 Subaru Outback Legacy, you will need to begin by removing the rear seat. This will grant you access to the fuel pump, which is located inside the fuel tank.
Once you have located the fuel pump, you will need to disconnect the fuel lines that are attached to it. Before doing so, it is important to relieve the pressure in the fuel lines. This can be done by removing the fuse for the fuel pump, which is located in the fuse panel, and then starting the car. The car will stall out in a few moments, and you can then disconnect the battery.
With the pressure relieved, you can now safely disconnect the fuel lines from the fuel pump. It is recommended to have some rags and a cup ready, as there may be some fuel spillage during this process.
After the fuel lines have been disconnected, you will need to remove the fuel pump from the fuel tank. This may require some twisting and pulling, but once removed, you can then proceed with replacing or servicing the fuel pump as needed.
It is important to note that working on fuel systems can be dangerous, and it is always recommended to refer to the vehicle's service manual or seek professional assistance if you are unsure about any part of the process.
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Locate the fuel filter behind the washer fluid reservoir
To locate the fuel filter on a 99 Subaru Outback Legacy, follow these steps:
Firstly, pop the hood of the car and remove the fuse panel. On a 99 SUS, there is no fuel pump fuse, so you will need to disconnect the fuel pump from behind the backseat on the passenger side. Then, idle until the car runs out of gas and disconnect the battery.
Now, locate the fuel filter. On a 2000 Subaru Outback, the fuel filter is located right behind the washer fluid reservoir. While the exact process for locating the fuel filter on a 99 Subaru Outback Legacy is not explicitly stated, it is reasonable to assume that the fuel filter location is similar to that of the 2000 model, given that both are Subaru Outback models.
It is important to note that changing the fuel filter may involve dealing with pressurized fuel lines, so caution and proper safety measures are necessary. Additionally, it is recommended to refer to the owner's manual for specific instructions on locating and replacing the fuel filter for your particular model.
Some users have shared their experiences with changing the fuel filter on a 99 Subaru Outback, emphasizing the ease of the process and the lack of significant fuel spillage when disconnecting the hoses. This information further reinforces the assumption that the fuel filter location on the 99 Subaru Outback Legacy is similar to that of the 2000 model.
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Disconnect the battery
To disconnect the battery of a 1999 Subaru Outback Legacy, follow these steps:
Firstly, pop the hood of the car to expose the engine. Then, locate the battery. It is typically located in the engine bay, often towards the front of the vehicle, but its exact position can vary depending on the car model. Once you have located the battery, identify the negative terminal, which is usually marked with a "-" symbol or a black cover. This is the terminal that you will disconnect.
Before proceeding, ensure that you have the appropriate tools for the task. You may need a wrench or socket set to loosen the battery terminal clamp. It is also recommended to wear protective gear, such as gloves and eye protection, to safeguard against any potential hazards. Now, use your tool of choice to loosen the clamp on the negative terminal. Be cautious not to touch any other metal components in the engine bay with the wrench or socket while performing this step. Once the clamp is loose, carefully lift it off the terminal, ensuring that it does not touch any other metal parts.
At this point, the battery is officially disconnected. You may now proceed with your maintenance or repair work on the fuel filter. Remember to exercise caution and refer to a professional mechanic or the car's manual if you are unsure about any steps.
When you have completed your work and are ready to reconnect the battery, simply follow the previous steps in reverse. Securely attach the negative terminal clamp back onto the terminal, and ensure that it is tightened sufficiently.
Disconnecting and reconnecting the battery in a 1999 Subaru Outback Legacy is a relatively straightforward process, but it is always important to prioritize safety and consult expert advice if needed.
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Disconnecting the hoses is a challenge
The fuel pump does not have a fuse on a 1999 Subaru Outback Legacy, so you will need to disconnect the fuel pump from behind the backseat on the passenger side. Then, you will need to idle until the gas runs out and disconnect the battery. It is important to note that the battery should be disconnected before changing the fuel filter to ensure safety. Additionally, allowing the car to cool down before starting this process is recommended.
The fuel pump assembly is located inside the fuel tank, and the access panel is beneath the rear seat. This means that you will need to adjust the rear seat to access the fuel tank and fuel filter. It is recommended to refer to the OEM service manual or the Subaru manual for specific instructions on how to do this.
Changing the fuel filter can help improve gas mileage. A dirty or failing fuel filter can cause increased fuel consumption and higher RPMs after warm-up. It is important to change the fuel filter regularly and ensure that the fuel injectors are clean to maintain optimal fuel efficiency.
Overall, while disconnecting the hoses can be a challenge, changing the fuel filter in a 1999 Subaru Outback Legacy is a task that can be completed with some patience and careful twisting and pulling.
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Frequently asked questions
The fuel filter is located inside the fuel tank and is part of the fuel pump module.
You will need to disconnect the fuel pump from behind the backseat on the passenger side.
You will need a fuse puller and a Phillips screwdriver.
It is recommended to change the fuel filter every 15,000 miles.








































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