how to diagnose Ford Explorer Fifth Generation (2011-2019) fuel pump problems

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

619 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 diagnose and fix fuel pump problems in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, 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 opening the fuel system to avoid burns.

Symptoms

•Engine cranks but does not start
•Loss of power during acceleration
•Engine stalling during operation
•Frequent misfires or rough running
•Check engine light illuminated
•Unusual noise from the fuel tank area

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any fuel system-related trouble codes.
2
Check the fuel pump fuse in the fuse box for any signs of failure.
3
Measure fuel pressure using a fuel pressure gauge to ensure it meets manufacturer specifications.
4
Inspect the fuel pump relay by testing for continuity and proper operation.
5
Verify wiring and connectors to the fuel pump for damage or corrosion.
6
Listen for the fuel pump activation sound when the ignition is turned on without starting the engine.

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
•Fuel pressure gauge
•Multimeter
•Socket set
•Screwdrivers
•Safety glasses
•Jack and jack stands

Parts Required

•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 fuel system-related trouble codes.
2
Check the fuel pump fuse in the fuse box for any signs of failure.
3
Measure fuel pressure using a fuel pressure gauge to ensure it meets manufacturer specifications.
4
Inspect the fuel pump relay by testing for continuity and proper operation.
5
Verify wiring and connectors to the fuel pump for damage or corrosion.
6
Listen for the fuel pump activation sound when the ignition is turned on without starting the engine.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the negative battery terminal.

2. Check Fuel Pump Fuse

Locate the fuse box, typically under the dashboard or in the engine compartment.
Remove the cover and locate the fuel pump fuse.
Use a multimeter to check for continuity. If blown, replace with a fuse of the same amperage.

3. Test Fuel Pressure

Connect a fuel pressure gauge to the Schrader valve on the fuel rail.
Turn the ignition to the "ON" position without starting the engine and record the pressure reading.
Compare the reading with the manufacturer specifications (usually around 30-50 psi). If low, proceed to the next steps.

4. Inspect Fuel Pump Relay

Locate the fuel pump relay in the fuse box.
Remove the relay and test for continuity using a multimeter.
If faulty, replace the relay with a new one.

5. Verify Wiring and Connectors

Visually inspect the wiring harness leading to the fuel pump for any signs of wear or damage.
Disconnect the harness and check for corrosion at the connectors. Clean if necessary.
Repair or replace damaged wires or connectors as needed.

6. Replace Fuel Pump (if necessary)

If the previous tests indicate a faulty fuel pump, proceed to replace it.
Lift the vehicle and remove the fuel tank (if applicable) following service manual instructions.
Disconnect fuel lines and electrical connectors from the fuel pump module.
Remove the pump assembly from the tank and replace with a new fuel pump.
Reassemble the fuel tank and reconnect all components.