Replacing Fuel Pump In Nissan Murano: Step-By-Step Guide

The fuel pump in a car is responsible for delivering gas from the fuel tank to the fuel injectors. While there is no specific replacement interval, fuel pumps do need to be replaced as mileage increases. If you're looking to replace the fuel pump on your 2005 Nissan Murano, you'll need to disconnect the battery, remove the rear seat, and access the pump through the fuel tank. This process can vary depending on the make and model of your car, so it's always best to consult a professional or a repair manual for specific instructions.

Disconnect the battery

Disconnecting the battery is an important first step when replacing the fuel pump on your 2005 Nissan Murano. This is a critical safety precaution to reduce the chance of a fire when working on the fuel system. Here is a detailed guide on how to disconnect the battery:

First, locate the battery. The battery in your 2005 Nissan Murano is most likely found in the engine compartment, typically near the front of the vehicle. Open the hood and look for a rectangular unit with two terminals, one positive (+) and one negative (-).

Once you've located the battery, the next step is to identify the negative terminal. It should be clearly marked with a minus sign or the letter 'N'. The negative terminal is where you will make the disconnection.

Before proceeding, ensure that you have the necessary tools, which include a wrench or socket that fits the battery terminal nut. You may also want to wear protective gear, such as gloves and eye protection, to avoid any potential hazards.

Now, place the wrench or socket on the negative battery terminal nut and loosen it by turning it counterclockwise. You may need to apply some force to break the nut free, but be careful not to strip the threads. Once the nut is loose, you can remove it by hand.

At this point, the battery is still connected, but you have created a break in the circuit. To completely disconnect the battery, carefully lift the terminal connector off the battery post. Be aware that there may be some corrosion or residue on the terminal, so it's important to handle it with care and avoid any direct contact with your skin or eyes.

Finally, place the disconnected terminal and nut in a safe location away from the battery to ensure they do not accidentally make contact and create a short circuit. You may also want to cover the battery terminal with a piece of electrical tape or a terminal protector for added safety.

By following these steps, you have successfully disconnected the battery in your 2005 Nissan Murano, reducing the risk of fire and electrical hazards as you continue with the fuel pump replacement procedure. Remember to reconnect the battery properly once you have completed the fuel pump replacement.

Remove the rear seat

To remove the rear seat of a 2005 Nissan Murano, you will need to first pull the fuel line lose from the pump. Then, follow these steps:

• Remove the cover from the far back, between the back of the rear seat and the trunk space.
• Remove approximately 4 to 6 screws in the center piece of cardboard that attaches the armrest and rear seat to the cross member of the trunk and the seat.
• Grab the top of the backrest of the rear seat and pull hard forward on the left and right sides. This should disconnect the top.
• On the left and right sides, towards the lower cushion, there will be a bolt. Remove them.
• Pull up the bottom cushion.
• In the middle of the floor where the bottom cushion once was, you will find the top of the fuel pump access.
• From the top, there is a cable that goes towards the driver's side. Follow it to the connector, which should be covered by a small piece of foam.
• Remember to disconnect the pump before attempting to service or replace it.

Remove the access cover

To remove the access cover of the fuel pump on a 2005 Nissan Murano, first, locate the fuel pump. It is situated inside the fuel tank and can be easily accessed from under the rear seat. If there is an armrest in the middle of the rear seat, you will need to go through the trunk to access the pump.

Now, to remove the access cover, follow these steps:

• Remove the cover from the far back, between the back of the rear seat and the trunk space.
• Remove the screws (approximately 4 to 6) in the center piece of cardboard that attaches the armrest and rear seat to the cross member separating the trunk from the seat.
• Grab the top of the backrest of the rear seat and pull it forward on both the left and right sides. This should disconnect the top.
• On the left and right sides, towards the lower cushion, there will be a bolt. Remove them.
• Pull up the bottom cushion.

At this point, you should be able to see the top of the fuel pump access in the middle of the floor where the bottom cushion once was. Remember to disconnect the pump before attempting to service or replace it.

Replace the pump and pre-pump filter screen

To replace the fuel pump and pre-pump filter screen on a 2005 Nissan Murano, you will first need to disconnect the battery to reduce the chance of a fire. Next, access the pump by removing the rear seat and the cover from the back, between the back of the rear seat and the trunk space. Remove the screws in the center piece of cardboard that attaches the armrest and rear seat to the cross member separating the trunk from the seat. Then, grab the top of the backrest of the rear seat and pull it forward on both sides to disconnect the top. Remove the bolts on the left and right sides towards the lower cushion and pull up the bottom cushion. In the middle of the floor where the bottom cushion was, you will find the top of the fuel pump access. From there, follow the cable towards the driver's side to locate the connector, which should be covered by a small piece of foam. Remember to disconnect the pump before servicing or replacing it.

Once you have accessed the fuel pump, you can replace it along with the pre-pump filter screen. It is recommended to replace the fuel filters at the same time as the fuel pump. This includes the intake screen for in-tank fuel pumps. Additionally, on some vehicles, the fuel pump relay is known to fail, so it is good practice to replace the relay when the pump is replaced.

Check for fuel leaks

After replacing the fuel pump, it is important to check for fuel leaks. Here are some detailed steps to help you with this process:

• Before reconnecting the battery, ensure that there are no fuel leaks.
• Once the pump is replaced, perform another check to ensure there are no fuel leaks and that the problem is solved.
• After the repair is done, be on the lookout for fuel leaks or odors.
• If you see or smell gasoline, do not start or drive the car, and do not park inside your house or under a covered structure.
• Have the car towed to a shop for inspection and repair.

Working with the fuel system is dangerous, so take all necessary precautions to prevent a fire.

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