Ford Ranger Fuel Filter: Maintenance And Replacement Guide

The fuel filter in a car should be replaced every 10,000 to 60,000 miles, according to some sources. However, the owner's manual for the 2004 Ford Ranger is unclear on this matter, stating only that one should see [their] dealer or a qualified service technician. Some people find this interval to be too expensive, as fuel filters can cost up to $20. Nevertheless, it is important to change the fuel filter regularly, as a clogged filter can cause a significant decrease in fuel efficiency.

Fuel filter location

To locate the fuel filter on a 2004 Ford Ranger, look on the driver's side frame rail under the back of the cab. You will see a metal can the size of a pop can. That is your fuel filter.

The filter is under the driver’s frame rail, on the inside, about where your seat is. There are some springy things on the Quick Disconnect fittings that you have to take off. Just squeeze them and sort of twist them to release the tab and slot that holds them together. The book called them retainer clips or something.

Note that there is pressure still in your fuel system, and it will spray out. It is recommended to wear eye protection and to relieve the fuel pressure before attempting to remove the filter.

How often to change the fuel filter

The fuel filter on a 2004 Ford Ranger should be replaced every 30,000 miles, according to the 2019 and 2020 Owner's Manuals. However, some people suggest replacing it more frequently, such as every 10,000-20,000 miles, as a preventative maintenance measure.

The fuel filter is located on the inner frame rail, approximately at the level of the driver's door. It is important to relieve the fuel pressure and wear safety goggles before attempting to change the fuel filter, as there is a risk of fuel splashing.

The process of changing the fuel filter involves the following steps:

• Relieving the fuel pressure by disconnecting the wire connector from the Fuel Inertia Switch and cranking the engine for 20-30 seconds.
• Putting on safety goggles to protect your eyes from fuel splashes.
• Raising the front of the truck to prevent fuel siphoning.
• Locating the fuel filter under the driver's frame rail and removing the spring retainer clips or retainer clips that hold it in place.
• Using a metal quick-disconnect tool to separate the fuel lines from the filter.
• Capping the fuel lines with the caps from the new filter to prevent fuel loss.
• Installing the new filter by sliding the filter tubes into the quick-disconnect fittings and securing them with the spring retainer clips.
• Testing the new filter by plugging back the Fuel Inertia Switch and turning on the ignition.

The cost of a new fuel filter

The total cost of a new fuel filter, including parts and labour, is estimated to be between $90 and $207. More specifically, the cost of labour is estimated to be between $44 and $56, while the cost of parts is estimated to be between $50 and $101.

It is recommended that fuel filters be replaced every 40,000 to 80,000 miles, or every 5 years/50,000 miles, depending on the age of the car.

How to change the fuel filter

Disclaimer: Please exercise extreme caution when attempting to change your fuel filter. Ensure you have the correct tools and safety equipment before you begin.

Step 1: Prepare Your Vehicle

Park your Ford Ranger on a level surface and ensure you have enough room to work around the vehicle.

Step 2: Relieve the Fuel System Pressure

Open the hood and disconnect the black, negative battery cable. Loosen the fuel filler cap and locate the Schrader valve along the inlet fuel line of the fuel rail inside the engine compartment. Depress the stem inside the valve using a small screwdriver. Cover the valve with a shop rag to catch any released fuel.

Step 3: Locate the Fuel Filter

The fuel filter is located under the frame rail near the fuel tank on the driver's side of the vehicle. You may need to raise the rear of the truck using a floor jack and support it on a jack stand.

Step 4: Prepare for Removal

Clean the lines and fittings on both ends of the fuel filter. Remove any clips holding the fuel line fittings to the filter. Put on your safety goggles.

Step 5: Disconnect the Fuel Lines

Disengage the fuel lines from both ends of the filter. You may need a special tool for this step, depending on the model of your Ford Ranger.

Step 6: Remove the Old Fuel Filter

Remove the fuel filter from the mounting bracket. If necessary, use a wrench or ratchet and socket to remove the bracket from the rail. Be careful not to spill fuel everywhere; have a catch tray or bucket ready.

Step 7: Install the New Fuel Filter

Install the new filter on the bracket, ensuring the arrow on the side of the filter case points towards the engine. Secure the bracket on the frame rail.

Step 8: Reconnect the Fuel Lines

Connect the fuel lines to both ends of the new filter and install the clips on the line fittings.

Step 9: Final Steps

Lower the vehicle, tighten the fuel filler cap, and reconnect the black, negative battery cable. Start the engine and check for fuel leaks.

Notes:

• It is recommended to relieve the fuel system pressure before beginning work.
• Always wear safety goggles to protect your eyes from fuel spray.
• Ensure you are parked away from open flames or appliances such as water heaters and dryers.
• Do not smoke while working on the fuel system.
• Some models may require a special fuel filter tool for removal and installation.

Safety precautions when changing the fuel filter

Safety should always be the top priority when working on your car. Here are some safety precautions to follow when changing the fuel filter on your 2004 Ford Ranger:

Wear protective gear: Always wear safety goggles to protect your eyes from any splashing fuel. It is also recommended to wear gloves and long sleeves to protect your skin. Have a fire extinguisher nearby in case of any accidents.

Work in a well-ventilated area: Fuel fumes can be dangerous, so make sure you are working in a well-ventilated area to avoid inhaling fumes.

Relieve the fuel pressure: Before beginning any work on the fuel system, it is crucial to relieve the fuel pressure. This will help prevent fuel from spraying out when you disconnect the fuel lines.

Disconnect the battery: Before starting, disconnect the negative (-) battery cable or the fuse for the fuel pump's circuit to prevent any accidental electrical issues.

Allow the engine to cool: Ensure that the engine is cool before beginning work to avoid the risk of burns or accidental ignition of fuel.

Be cautious of fuel spillage: When removing the old fuel filter, be cautious as fuel may spill out. Have a bucket or container ready to catch any spilled fuel.

Cap the fuel lines: After removing the old filter, cap the fuel lines with the caps from the new filter to prevent fuel leakage.

Check for leaks: Once you have installed the new filter and started the car, check for any leaks in the fuel lines. Do this immediately after starting the car and again a few hours later to ensure all lines are fitting correctly.

Properly dispose of the old fuel filter: Fuel filters contain hazardous materials and should not be disposed of with regular trash. Take the old filter to a designated disposal facility or auto repair shop that accepts used motor oil and filters.

Follow manufacturer's instructions: Always refer to your owner's manual for specific instructions and safety precautions related to your vehicle.

By following these safety precautions, you can help ensure that you change your fuel filter safely and effectively.

Frequently asked questions