how to fix the fuel gauge on 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

513 words

Problem Statement

Learn how to diagnose and fix fuel gauge issues 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 battery before working on electrical systems.
•Allow the engine to cool before opening the fuel system.

Symptoms

•Fuel gauge needle stuck at empty or full
•Intermittent fuel gauge readings
•Check engine light illuminated
•Incorrect fuel level display after refueling
•Fuel warning light activates prematurely

Diagnostic Steps

1
Scan the vehicle for error codes using an OBD-II scanner to check for any fuel system-related codes.
2
Inspect the fuel tank for proper wiring connections and ensure no corrosion or damage is present.
3
Verify the operation of the fuel level sender unit by measuring resistance with a multimeter.
4
Check the instrument cluster for any faults by performing a self-test if available.
5
Ensure the vehicle's battery voltage is within specifications to rule out electrical issues.

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

•Socket set
•Multimeter
•OBD-II scanner
•Wire brush
•Safety glasses

Parts Required

•Fuel level sender unit (if faulty)

Related Faults

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Diagnostic Steps

1
Scan the vehicle for error codes using an OBD-II scanner to check for any fuel system-related codes.
2
Inspect the fuel tank for proper wiring connections and ensure no corrosion or damage is present.
3
Verify the operation of the fuel level sender unit by measuring resistance with a multimeter.
4
Check the instrument cluster for any faults by performing a self-test if available.
5
Ensure the vehicle's battery voltage is within specifications to rule out electrical issues.

Solution

1. Preparation

Gather tools and parts.
Disconnect the battery to ensure safety while working on electrical components.
Tools Required: Socket set, multimeter, OBD-II scanner, wire brush, and safety glasses.

2. Inspect and Clean Connections

Remove the fuel tank access panel or lower the fuel tank if necessary to access the fuel sender.
Inspect the wiring harness and connectors for damage or corrosion.
Clean any corrosion with a wire brush and apply dielectric grease to prevent future corrosion.

3. Test Fuel Level Sender

Disconnect the fuel level sender connector.
Use a multimeter to measure the resistance across the sender terminals. It should vary from approximately 0 ohms (empty) to 90 ohms (full).
If the resistance is outside this range, the sender is likely faulty and needs replacement.

4. Replace Fuel Level Sender (if necessary)

If the fuel level sender is faulty, remove it from the fuel tank:
- Disconnect the fuel lines and electrical connector.
- Remove the retaining ring or screws securing the sender.
Install the new fuel level sender:
- Position the new sender in the tank and secure it with the retaining ring or screws.
- Reconnect the fuel lines and electrical connector.

5. Reassemble and Test

If the fuel tank was lowered, carefully lift it back into position and secure it.
Reconnect the battery.
Start the vehicle and observe the fuel gauge operation. Ensure it accurately reflects the fuel level.