why is my Ford F-150 13th Generation (2015-2020) fuel gauge inaccurate

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

500 words

Problem Statement

Learn how to diagnose and fix an inaccurate fuel gauge in Ford F-150 (2015-2020). 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 working on fuel systems.

Symptoms

•Fuel gauge reading empty despite a full tank
•Fluctuating fuel gauge readings while driving
•Check engine light illuminated
•Difficulty starting the engine when fuel level is low
•Fuel warning light activates prematurely

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related faults.
2
Inspect the fuel sending unit for proper operation and secure connections.
3
Check the wiring harness and connectors for damage or corrosion.
4
Test the fuel level sensor with a multimeter to ensure it operates within specifications.
5
Verify the functionality of the instrument cluster by performing a self-test.

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
•Socket set
•Screwdrivers
•Fuel line removal tool
•Multimeter

Parts Required

•New fuel sending unit

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related faults.
2
Inspect the fuel sending unit for proper operation and secure connections.
3
Check the wiring harness and connectors for damage or corrosion.
4
Test the fuel level sensor with a multimeter to ensure it operates within specifications.
5
Verify the functionality of the instrument cluster by performing a self-test.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle battery to ensure safety when working with electrical components.

2. Access the Fuel Sending Unit

Tools Required: Socket set, screwdrivers, fuel line removal tool.
Remove the rear seat or access panel, depending on the configuration.
Locate and remove any screws or clips securing the access cover.
Carefully lift the access cover to expose the fuel tank.

3. Inspect and Replace the Fuel Sending Unit

Disconnect the electrical connector from the fuel sending unit.
Use the fuel line removal tool to detach the fuel lines from the unit.
Remove the retaining ring holding the fuel sending unit in place using a hammer and punch or appropriate tool.
Carefully lift the fuel sending unit out of the tank, taking care not to damage the float arm.
Inspect the unit for signs of wear, corrosion, or damage. If defective, replace with a new fuel sending unit.
- Parts Required: New fuel sending unit (ensure compatibility).

4. Reassemble and Test

Reinstall the new or inspected fuel sending unit and secure it with the retaining ring.
Reconnect the fuel lines and electrical connector ensuring a tight fit.
Replace the access cover and secure it with screws or clips.
Reconnect the vehicle battery.