how to fix Ford F-150 13th Generation (2015-2020) when it cranks but won’t start?

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

584 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 a Ford F-150 that cranks but won't start. 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 removing any engine components

Symptoms

•Engine cranks but fails to start
•No sound from the fuel pump when the ignition is turned on
•Check engine light illuminated
•Fuel gauge shows empty even when tank is full
•Unusual smells (e.g., fuel odor)
•Battery charge appears normal

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any diagnostic trouble codes (DTCs)
2
Check the battery voltage and connections to ensure adequate power supply
3
Inspect the fuel pump relay and fuse for continuity and operation
4
Test the fuel pressure at the fuel rail using a fuel pressure gauge
5
Verify that the ignition system is functioning by checking for spark at the spark plugs
6
Check the condition of the key fob and attempt to start with a spare key if available
7
Inspect for any visible leaks in the fuel system and under the vehicle

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
•Spark tester

Parts Required

•Fuel pump relay (if faulty)
•Fuel filter (if clogged)
•Ignition coil (if defective)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any diagnostic trouble codes (DTCs)
2
Check the battery voltage and connections to ensure adequate power supply
3
Inspect the fuel pump relay and fuse for continuity and operation
4
Test the fuel pressure at the fuel rail using a fuel pressure gauge
5
Verify that the ignition system is functioning by checking for spark at the spark plugs
6
Check the condition of the key fob and attempt to start with a spare key if available
7
Inspect for any visible leaks in the fuel system and under the vehicle

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is in a safe, level area and the ignition is off.
Disconnect the battery negative terminal to prevent electrical shock.

2. Inspect Fuel Pump

Sub-steps:
- Remove the fuel pump relay from the fuse box.
- Test the relay with a multimeter to check for continuity.
- If the relay is faulty, replace it with a new one.
- Reinstall the relay and reconnect the battery.

3. Check Fuel Pressure

Sub-steps:
- Attach the fuel pressure gauge to the fuel rail Schrader valve.
- Turn the ignition to the ON position (do not crank) to check the fuel pressure reading.
- Compare the reading with the manufacturer's specifications (typically around 30-50 psi for F-150).
- If pressure is low, inspect the fuel filter and fuel lines for clogs or leaks.
- Replace the fuel filter if necessary.

4. Inspect Ignition System

Sub-steps:
- Remove one spark plug wire and insert a spark tester.
- Crank the engine and check for spark.
- If no spark is produced, check the ignition coil and replace if defective.
- Reinstall everything and reconnect the battery.

5. Consider Security System

Sub-steps:
- Attempt to start the vehicle with a spare key or fob to rule out key issues.
- If it starts with a different key, reprogram the primary key with the vehicle’s manual.