how to troubleshoot a Ford Explorer Sixth Generation (2020-present) fuel pump not working

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

615 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to troubleshoot and fix fuel pump issues in Ford Explorer Sixth Generation (2020-present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Fuel System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before accessing the fuel system to prevent burns.

Symptoms

•Engine cranks but does not start
•No fuel pressure at the fuel rail
•Fuel pump relay clicking sound or no sound at all
•Check engine light illuminated
•Unusual noises from the fuel tank (buzzing or grinding)
•Poor acceleration or hesitation during driving

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any relevant trouble codes.
2
Check the fuel pump relay and fuse for continuity and proper function.
3
Measure the voltage at the fuel pump connector with a multimeter while the ignition is in the ON position.
4
Inspect the fuel lines for leaks or blockages that could affect fuel delivery.
5
Perform a fuel pressure test using a fuel pressure gauge at the fuel rail.
6
Check for proper grounding at the fuel pump connector.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Fuel pressure gauge
•Socket set
•Pliers/Fuse puller

Parts Required

•New fuel pump (if replacement is necessary)
•Fuel pump relay (if faulty)
•Fuel filter (if needed)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any relevant trouble codes.
2
Check the fuel pump relay and fuse for continuity and proper function.
3
Measure the voltage at the fuel pump connector with a multimeter while the ignition is in the ON position.
4
Inspect the fuel lines for leaks or blockages that could affect fuel delivery.
5
Perform a fuel pressure test using a fuel pressure gauge at the fuel rail.
6
Check for proper grounding at the fuel pump connector.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts.
Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.

2. Inspect and Replace Fuel Pump Relay/Fuse

Identify the fuse and relay locations in the fuse box (refer to owner’s manual).
- Tools Required: Fuse puller or pliers.
Remove the fuel pump relay and inspect for burn marks or damage.
Replace the relay if faulty.
Check the corresponding fuse for continuity and replace it if blown.

3. Voltage and Ground Testing

Reconnect the battery and turn the ignition to the ON position (do not start the engine).
Using a multimeter, check for voltage at the fuel pump connector.
- Tools Required: Multimeter.
If no voltage is present, trace back to the fuel pump relay and associated wiring for faults.
Ensure that the ground wire is intact and making good contact.

4. Fuel Pump Replacement (if necessary)

If the fuel pump is faulty based on previous tests, proceed with the replacement:
- Disconnect the fuel lines from the fuel pump assembly (use safety glasses).
- Remove the access panel in the rear of the vehicle (if applicable) or lower the fuel tank.
- Unbolt and remove the old fuel pump from the assembly.
- Install the new fuel pump, ensuring the O-ring is properly seated.
- Reattach the fuel lines securely to prevent leaks.

5. Reassemble and Test

Reconnect the fuel pump electrical connector.
Reinstall any access panels or the fuel tank.
Reconnect the negative battery terminal.
Start the vehicle and check for proper operation and any leaks.