Ford Taurus Fuel Pressure Regulator: 2003 Models And Issues

The Ford Taurus is a popular car model that has been in production since 1986. Over the years, different generations of the Taurus have been released, with the first four generations spanning from 1986 to 2007. One common question that Taurus owners have is regarding the location of the fuel pressure regulator.

The fuel pressure regulator is a vital component of the fuel system, as it controls the pressure of fuel delivered to the engine. While some sources suggest that the fuel pressure regulator is located on the fuel rail, others claim that it is situated within the fuel pump or fuel tank. In certain models, the fuel rail pressure transducer acts as the regulator.

For example, a 2001 Taurus owner was informed by a Ford dealership that the regulator was located on the fuel rail. However, upon inspection, it was discovered that the regulator was not present at that location. Another individual with a 2003 Taurus Vulcan engine experienced similar confusion, as their vehicle exhibited symptoms indicative of a faulty fuel pressure regulator, but the issue ultimately turned out to be a bad fuel pump.

It is important to note that the specific location of the fuel pressure regulator can vary depending on the year and model of the Ford Taurus. Online forums and automotive websites provide conflicting information, with some sources stating that it is located on the fuel rail, while others suggest it is integrated into the fuel pump or even within the fuel tank. Therefore, it is advisable to refer to official Ford documentation or consult a trusted mechanic to accurately determine the location of the fuel pressure regulator in a 2003 Ford Taurus.

Fuel pressure regulator location

The fuel pressure regulator in a 2001 Ford Taurus is located on the fuel rail, on the far left side, with a vacuum line attached to it. The 2001 model is part of the Generation 1-4 Taurus, Sable Platform (1986-2007) which uses a returnless fuel system.

One user with the same car model and year, who was looking for the fuel pressure regulator, was told by AutoZone that it was on/in the fuel pump. However, when shown a new fuel pump, the regulator could not be found. Another user was told by the Ford dealership that the regulator was on the fuel rail, but they also could not find it.

A Ford technician stated that the vehicle uses a fuel rail pressure transducer as the regulator, which is located on the end of the rail. Another user with a 2002 Ford Taurus confirmed that the pressure regulator is located in the fuel tank, in a module with the fuel pump.

Fuel pump issues

• Leaking fuel pump or unusual noise—If you notice any leaks or strange noises coming from the fuel pump, it is important to get it checked as soon as possible. This could indicate a failing fuel pump that needs to be replaced.
• Loss of engine power or difficulty starting the car—A faulty fuel pump may not be able to create enough pressure in the fuel system, resulting in reduced engine power or difficulty starting the vehicle.
• Check engine light is illuminated—The check engine light coming on can be an indication of a problem with the fuel pump or another issue with the vehicle. It is recommended to have a mechanic diagnose the specific problem.
• Intermittent starting issues—If your Taurus sometimes cranks but does not start, and then starts normally after a few attempts, this could be a sign of a failing fuel pump. This issue can be intermittent and may be resolved temporarily by keying the cycle on and off until the pump runs.
• Weak idling and stalling—If the car starts but idles weakly and struggles to stay running, this could be related to a faulty fuel pump or a problem with the IAC (Idle Air Control) valve.

It is important to note that fuel pump issues can be complex, and other factors such as a clogged fuel filter or a bad circuit can cause similar symptoms. Therefore, it is recommended to have a qualified mechanic perform a proper diagnosis before replacing the fuel pump.

Fuel filter problems

A fuel filter's job is to trap dirt, rust, scale, and other impurities from entering the fuel pump, fuel injectors, and engine without affecting fuel pressure. While it's easy to forget about your car's fuel filters, here are some signs that they need to be replaced:

• Poor engine performance: Under heavy loads, a clogged fuel filter may cause the engine to randomly hesitate, surge, or sputter. This is more prominent when accelerating, especially up a steep incline.
• Engine stalling: An engine that repeatedly stalls while driving could be a warning of a dirty fuel filter. As the clog worsens, stalling becomes excessive or worsens on acceleration.
• Random misfire or rough idle: A clogged fuel filter causes low fuel pressure, resulting in a lean fuel condition and engine misfire. This can lead to poor fuel mileage and rough idling, and possibly cause the check engine light to come on.
• Fuel system part failures: A restricted fuel filter may cause your fuel pump to become noisy, damaged, or fail. If something prevents the correct amount of fuel from reaching the engine, the fuel pump will try to compensate, placing undue pressure on the pump motor.
• Trouble starting the engine: The most common sign of a clogged fuel filter is trouble starting the car, as it depletes the oil supply going to the engine. A fully clogged fuel filter will cause the engine not to start at all.
• Poor acceleration: When not enough fuel (or low fuel pressure) is making it to the combustion chamber, the vehicle's computer will restrict the power output to prevent any engine damage from running too lean.
• Check engine light: A bad fuel filter can trigger the check engine light, especially in vehicles with a fuel pressure sensor to monitor the amount of fuel going through the system.

Most vehicles have two fuel filters. There's one in the fuel tank, often called a strainer, and there's one in the main fuel line. The replacement interval for fuel filters depends on your car's manufacturer and driving conditions. Typically, it's between 20,000 and 80,000 miles, or every 2-3 years.

Fuel rail pressure sensor

The fuel rail pressure sensor is an electronic device that monitors the pressure inside the fuel rail, the metal tube that connects the fuel delivery system to the engine. It is usually found mounted on the fuel rail.

The fuel rail pressure sensor is made up of a semiconductor and an electric circuit. It measures the force applied by the fuel passing through it. The fuel pressure causes changes in the semiconductor's resistance, which the sensor's integrated circuit converts into a digital signal for the PCM (powertrain control module). This helps the PCM control the fuel supply to the engine.

A faulty fuel rail pressure sensor will usually display warning signs, such as an illuminated check engine light, engine start problems, poor engine performance, bad fuel economy, and engine misfires. If you experience these issues, you should take your vehicle to a mechanic for diagnosis and repair.

While it is possible to drive with a faulty fuel rail pressure sensor, it is not advisable as running lean or rich can cause serious engine problems in the future.

Fuel pump replacement

Step 1: Park your vehicle and set the brake

It is important to ensure your vehicle is securely parked on a firm, level surface before attempting any repairs.

Step 2: Locate the fuel pump and listen for the hum

Most vehicles have their fuel pump located in the fuel tank. Open the fuel cap and turn the key to the 'ON' position. Listen at the filler opening; if working properly, you should hear the fuel pump hum for two to three seconds. If no sound is heard, it may be necessary to replace the pump.

Step 3: Check the fuel pump fuse and relay

If the pump is not functioning, the issue may be a blown fuse. Replace the fuse with one of the same amperage and re-check the fuel pump operation. If the fuse and relay are functional, check for power and ground at the fuel pump.

Step 4: Prepare the fuel system

Relieve the fuel system pressure and disconnect the negative battery cable. Siphon or drain as much fuel as possible from the tank. Disconnect the filler tube hose and electrical connection to the pump.

Step 5: Access the fuel pump

Depending on your vehicle, you may need to remove the fuel tank or the back seat to access the pump. Support the fuel tank with a jack and a block of wood. Remove any retaining straps or bolts holding the tank in place and carefully lower it down.

Step 6: Disconnect the fuel lines and remove the old fuel pump

Before removing the old fuel pump, take note of the fuel line connections and wiring. Disconnect the fuel lines and remove the pump from the tank.

Step 7: Install the new fuel pump

Compare the new fuel pump with the old one to ensure you have the correct part. Install the new pump, reconnecting the fuel lines and any retaining straps. Reconnect the filler tube hose and electrical connector.

Step 8: Reassemble and test

Reconnect the negative battery cable and fill the tank with fuel. Conduct a road test to confirm the repair was successful.

Additional Tips:

• Work in a well-ventilated area, preferably outdoors, to minimise the risk of fire and inhalation of harmful fumes.
• Always wear safety gear, including glasses, gloves, and appropriate clothing to protect against fuel spills and splashes.
• Drain the fuel tank to reduce the risk of spills and make it easier to handle.
• Clean around the fuel pump to prevent dirt and debris from falling into the tank.
• Consider replacing related components such as the fuel filter, fuel pump strainer, and fuel tank O-ring or gasket.

Ford Taurus Fuel Pressure Regulator

The fuel pressure regulator in a Ford Taurus is located on the fuel rail, which can be found on the far left side of the engine with a vacuum line attached. On some models, there may also be an electrical connector present.

It is important to note that the location of the fuel pressure regulator may vary depending on the year and model of the Ford Taurus. For example, on the 2001 Taurus with a 3.0 OHV engine, the pressure regulator is located in the fuel tank, in a module with the fuel pump.

Additionally, some sources suggest that the 2001 Ford Taurus uses a fuel rail pressure transducer as the regulator, which is located at the end of the rail.

Always refer to the specific manual or a mechanic for your car's exact make and model.

Frequently asked questions