how to fix the fuel gauge issue on my Ford F-150 13th Generation (2015-2020)

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

562 words

Problem Statement

Learn how to diagnose and fix fuel gauge issues in Ford F-150 13th Generation (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 battery before working on electrical systems.
•Allow engine to cool before opening the fuel system.

Symptoms

•Fuel gauge shows empty when tank is full
•Fuel gauge fluctuates erratically
•Check engine light illuminated
•Inaccurate fuel range displayed in the trip computer
•Possible fuel smell if there is a leak

Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes related to the fuel system or gauge.
2
Inspect the fuel sender unit for damage or corrosion.
3
Test the fuel gauge with a multimeter to check for voltage and ground issues.
4
Check the wiring harness for any loose connections or damaged wires.
5
Verify the operation of the Instrument Cluster by performing a self-test if available.
6
Inspect the fuel tank for any signs of leaks or damage.

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
•Socket set
•Screwdrivers

Parts Required

•Fuel sender unit (if replacement is necessary)
•Fuel tank access panel screws/clips (if damaged)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's OBD-II system for any error codes related to the fuel system or gauge.
2
Inspect the fuel sender unit for damage or corrosion.
3
Test the fuel gauge with a multimeter to check for voltage and ground issues.
4
Check the wiring harness for any loose connections or damaged wires.
5
Verify the operation of the Instrument Cluster by performing a self-test if available.
6
Inspect the fuel tank for any signs of leaks or damage.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the vehicle battery to ensure safety during repairs.
Allow the vehicle to cool down before starting any work on the fuel system.

2. Access Fuel Sender Unit

Tools Required: Socket set, screwdrivers
Remove the rear seat or bed, depending on the configuration, to access the fuel tank.
Disconnect any retaining clips or screws securing the access panel to the fuel tank.

3. Remove Fuel Sender Unit

Carefully disconnect the wiring harness from the fuel sender unit.
Use a socket to remove the retaining ring securing the fuel sender unit to the tank.
Gently lift the fuel sender unit out of the tank, taking care not to damage the float arm.

4. Inspect and Replace Components

Tools Required: Multimeter, replacement fuel sender unit (if necessary)
Inspect the float arm for any sticking or damage.
Test the resistance of the fuel sender unit with a multimeter to ensure it is functioning correctly.
If faulty, replace the fuel sender unit with a new one, ensuring it is compatible with the F-150 model.

5. Reassemble Components

Carefully insert the new or inspected fuel sender unit back into the tank.
Secure it with the retaining ring and reconnect the wiring harness.
Replace the access panel and secure it with screws or retaining clips.

6. Reconnect Battery and Test

Reconnect the battery and start the vehicle.
Test the fuel gauge to ensure it is functioning correctly and providing accurate readings.