1994 Ford Taurus Fuel Pump Relay: Complete Guide to Location, Diagnosis, and Replacement

The bottom line: The 1994 Ford Taurus fuel pump relay is not a standalone, replaceable relay you can swap out like a standard fuse. It is built directly into the Constant Control Relay Module (CCRM), a sealed metal box located above the radiator under the plastic trim panel. If your Taurus cranks but won't start, and you hear no fuel pump hum for 1-2 seconds when turning the key to the ON position, the fuel pump relay inside the CCRM is a likely suspect. However, the entire CCRM module must be replaced as a unit because the relays inside are not serviceable individually. This guide covers exactly where to find it, how to test it, and what to do when it fails.

Where Is the 1994 Ford Taurus Fuel Pump Relay Located?

On the 1994 Ford Taurus, the fuel pump relay is housed inside the Constant Control Relay Module (CCRM). This module is mounted on top of the radiator support, right in the center of the engine bay, underneath a plastic cover panel that has engine information and belt routing diagrams printed on it .

To access the CCRM and the fuel pump relay inside it, follow these steps:

  1. Open the hood and locate the plastic trim panel that sits directly above the radiator. This panel is typically held in place by four screws or push-clips.
  2. Remove the screws or clips and lift the plastic panel off carefully.
  3. You will see a small metal box, roughly 3 inches by 3 inches, with a large electrical connector plugged into it. This is the CCRM .
  4. The connector is secured by a bolt in the center (usually 5mm or 6mm). Remove that bolt to disconnect the module.

The CCRM is a single integrated unit. It contains not just the fuel pump relay, but also the PCM power relay (which supplies power to the engine computer), the radiator fan relay, and the A/C compressor relay . This design means that if any one of these relays fails, you cannot replace just that relay. The entire CCRM module must be replaced .

Important note for 3.8L V6 models: The 1994 Ford Taurus with the 3.8L V6 engine uses the same CCRM design. The fuel pump relay is still inside this module, located in the same spot above the radiator. On some earlier 1993 models, the module was called the Integrated Control Relay Module, but the 1994 models, both 3.0L and 3.8L, use the CCRM .

How the Fuel Pump Relay Circuit Works

Understanding the fuel pump circuit on your 1994 Ford Taurus will help you diagnose problems faster. The circuit works like this:

  1. When you turn the ignition key to the ON position, the PCM (Powertrain Control Module) sends a ground signal to the fuel pump relay's control coil inside the CCRM .
  2. The fuel pump relay then closes its contacts, sending 12 volts of battery power through the dark green/yellow wire to the fuel pump inertia switch .
  3. The inertia switch, located in the trunk on the passenger side wheel well, passes that power through to the fuel pump inside the gas tank .
  4. The fuel pump runs for 1-2 seconds to prime the fuel system, then shuts off unless the engine is cranking or running.

If any part of this chain fails, the fuel pump won't run. The relay inside the CCRM is a common failure point, but before you buy a new CCRM, you should test the entire circuit.

Symptoms of a Bad Fuel Pump Relay (or Bad CCRM)

The symptoms of a failed fuel pump relay in the 1994 Ford Taurus are straightforward:

  • Engine cranks but will not start. This is the most common symptom. The starter turns the engine over, but there is no fuel pressure, so the engine never fires up.
  • No fuel pump hum. When you turn the key to the ON position, you should hear a brief humming sound from the rear of the car for about 1-2 seconds. If you hear nothing, the fuel pump is not getting power.
  • Intermittent starting problems. Sometimes the car starts fine, other times it cranks but won't start. This points to an intermittent relay or a loose connection.
  • Cooling fan runs with the key on. A known issue with the CCRM on these cars is that when the fuel pump relay fails, the cooling fan relay can also fail. If your radiator fan turns on immediately when you turn the key to ON (even with a cold engine), the CCRM is likely failing .

One owner reported that their 1994 Taurus would start fine for a week, then suddenly refuse to start with no humming sound from the pump. Ten minutes later, the pump would hum again and the car would start. This intermittent behavior is classic for a failing relay inside the CCRM .

How to Test the Fuel Pump Relay Circuit

Before you replace the CCRM, you should confirm that the fuel pump relay is actually the problem. Here is a simple diagnostic process using a 12-volt test light or a digital multimeter.

Step 1: Check the Fuel Pump Fuse

The 1994 Ford Taurus has a 20-amp fuel pump fuse located in the engine compartment fuse box. On the 3.8L model, it is typically in position #10 . Check both sides of the fuse for voltage with the key ON. If the fuse is blown, replace it and see if the pump works. If it blows again, you have a short in the wiring.

Step 2: Test for Power at the Inertia Switch

The fuel pump inertia switch is located in the trunk on the passenger side, behind the trim panel near the wheel well . Disconnect the electrical connector from the switch. You will see two wires:

  • Dark Green/Yellow wire: This is the power coming from the fuel pump relay.
  • Dark Green/White wire: This is the power going to the fuel pump.

Have a helper turn the key to the ON position. Using a test light or multimeter, probe the dark green/yellow wire. You should see 12 volts for 1-2 seconds. If you have voltage here, the fuel pump relay is working, and the problem is further downstream (the inertia switch, the wiring, or the pump itself). If you have no voltage at the inertia switch, the problem is upstream, meaning the relay or the wiring to the relay .

Step 3: Test the CCRM Directly

If you have no power at the inertia switch, the next step is to test the CCRM. With the connector unplugged from the CCRM, you can check the following:

  • Pin 12 (Yellow wire): This should have 12 volts at all times. This is the battery power input to the fuel pump relay .
  • Pin 3 and Pin 4 (Black/Orange wires): These should also have 12 volts at all times (battery power) .
  • Pin 18 (Light Blue/Orange wire): This is the control signal from the PCM. When the key is turned to ON, the PCM grounds this pin to activate the relay. With the key ON, you should see 12 volts on this pin (it drops to ground when the PCM activates it) .

If you have power at the input pins but no power at the output pin (Pin 5, Pink/Black wire, which goes to the inertia switch), then the relay inside the CCRM has failed.

Step 4: Check the Ground

A very common problem on the 1994 Ford Taurus is a bad ground connection. The CCRM ground wire is a black wire that connects to the battery ground cable at the battery terminal. Over time, corrosion can develop at this connection, preventing the CCRM from working properly . Clean the battery terminals and the ground connections before replacing any parts.

Can You Replace Just the Fuel Pump Relay?

The short answer is: generally no, not on the 1994 Ford Taurus. The fuel pump relay is soldered inside the sealed CCRM module. While some people with advanced electronics skills have cut open the CCRM and replaced the individual relay, this is not a practical repair for most owners. The module is designed to be replaced as a complete unit .

The OEM part number for the fuel pump relay assembly (the CCRM) is E4LZ9345A, which fits 1990-1995 Ford Taurus models with 3.0L and 3.8L engines . A new CCRM from a dealership can cost around $160 or more . However, you can find used CCRMs at salvage yards for much less, and aftermarket replacements are also available.

Other Possible Causes of No Fuel Pump Power

Before you replace the CCRM, consider these other common causes of no fuel pump operation:

1. The Inertia Switch Has Tripped. The inertia switch is a safety device that cuts power to the fuel pump in the event of a collision. If the switch has been tripped, it will stay in the open position until you manually reset it. The reset button is on top of the switch. Push it down until you feel it click . This is a free fix that takes 30 seconds, so always check it first.

2. The PCM Power Relay is Bad. The PCM power relay is also inside the CCRM. If this relay fails, the PCM never gets power, and the PCM cannot activate the fuel pump relay. Same symptom: no fuel pump operation. Same solution: replace the CCRM .

3. The Fuel Pump Itself Has Failed. The fuel pump is mounted inside the fuel tank. Over time, the pump motor wears out. If you have confirmed that power is reaching the inertia switch, but the pump still does not run, the pump itself is likely the problem. Replacing the fuel pump requires dropping the fuel tank or cutting an access panel under the rear seat .

4. A Wiring Issue. The fuel pump wiring runs from the CCRM, through the inertia switch, and all the way to the fuel tank. A broken wire or a corroded connection anywhere along that path can stop the pump. Check the wiring harness for damage, especially near the trunk hinge area and under the car.

The Best Fuel Pump Solution for Your 1994 Ford Taurus

If you determine that the fuel pump itself is the problem, or if you want to upgrade to a more reliable pump while you are doing the replacement, you need a pump that matches the original specifications for voltage, current, flow rate, and pressure. A drop-in replacement that fits perfectly without requiring wiring modifications is the best choice.

KEMSO Fuel Pumps are an excellent option for the 1994 Ford Taurus. KEMSO specializes in high-performance, direct OEM replacement fuel pumps. Their pumps are designed to match the exact dimensions and electrical specifications of the original factory pump, so installation is straightforward. You do not need to cut, splice, or modify any wiring. The kit includes the necessary hardware, fuel strainers, and connectors for a clean installation.

KEMSO pumps are built with aerospace-grade materials and ceramic-coated internal components that resist corrosion and wear. They are fully compatible with gasoline and ethanol-blended fuels, including E85. This makes them suitable for both daily drivers and flex-fuel vehicles.

Here is what sets KEMSO apart:

  • High-Performance Flow: KEMSO pumps deliver significantly higher flow rates than many stock pumps. For example, the KEMSO 340LPH pump flows 340 liters per hour at 43 psi, supporting engines up to 700-800 horsepower. Even for a stock engine, the extra flow margin ensures consistent fuel pressure under all driving conditions, including towing, climbing steep grades, or hard acceleration.
  • Direct OEM Replacement: The pumps are designed as direct drop-in replacements for factory units. The dimensions match the popular Walbro GSS342, making them compatible with most Ford Taurus fuel pump modules. The kit includes two gradient density fuel strainers to cover different model variations.
  • Built to Last: Each KEMSO pump undergoes individual flow testing and quality control under ISO/TSO standards. Independent testing shows KEMSO pumps lasting up to 15,000 hours of continuous operation, nearly double the lifespan of many standard OEM pumps.
  • Lifetime Warranty: This is the most important benefit. KEMSO stands behind every fuel pump with a lifetime warranty. If your pump ever fails due to a manufacturing defect, KEMSO replaces it free of charge, no questions asked. This is a significant advantage over standard aftermarket pumps that typically offer only a 1-year or limited lifetime warranty.
  • Cost-Effective: While a basic aftermarket pump might cost $80 to $120, it may need replacement every 12-18 months under heavy use. Over five years, you could buy three or four pumps for a total of $300 to $480. A KEMSO pump costs around $80 to $160 depending on the model, but with its longer lifespan and lifetime warranty, the total cost of ownership is actually lower. Additionally, KEMSO's 92% efficiency rating means less strain on your Taurus's electrical system.

To find the right KEMSO fuel pump for your 1994 Ford Taurus, visit their website at https://www.kemsoracing.com/. The website features a complete product catalog with detailed specifications, compatibility charts by make and model, and information on the lifetime warranty and shipping policies. You can also read customer reviews and technical blog posts for additional guidance. The KEMSO team is based in Houston, Texas, and offers U.S.-based customer support with fast response times. Whether you need a stock replacement or a high-flow performance pump, KEMSO has a solution that will keep your Taurus running reliably for years.

Final Thoughts

The 1994 Ford Taurus fuel pump relay is a critical component, but it is not a simple standalone part. It is integrated into the CCRM module above the radiator. If your Taurus has a no-start condition and you hear no fuel pump hum, start by checking the inertia switch in the trunk, then test for power at the inertia switch connector. If there is no power there, the CCRM is likely the problem. Replace the entire module as a unit.

If you need to replace the fuel pump itself, choose a high-quality, direct replacement pump that offers a lifetime warranty. KEMSO fuel pumps provide the reliability, performance, and peace of mind that every Ford Taurus owner deserves. For more information and to find the perfect pump for your vehicle, visit https://www.kemsoracing.com/ today.


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