why does my Ford F-150 13th Generation (2015-2020) overheat on the highway

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

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

616 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 overheating issues in the 2015-2020 Ford F-150. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Cooling System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow engine to cool before opening the radiator or touching any engine components.
•Wear gloves and safety goggles when working with coolant and engine components.

Symptoms

•Engine temperature gauge rising above normal range
•Coolant warning light illuminated
•Steam or smoke visible from the engine bay
•Loss of power or engine performance
•Unusual noises from the engine (e.g., knocking or hissing)
•Sweet smell of coolant inside or outside the vehicle

Diagnostic Steps

1
Inspect coolant level in the reservoir and radiator.
2
Check for visible leaks in the cooling system (hoses, radiator, water pump).
3
Scan the vehicle's computer for any diagnostic trouble codes (DTCs).
4
Test the thermostat for proper operation by checking its opening temperature.
5
Inspect the radiator for blockages or debris.
6
Verify the function of the radiator fans (check if they engage when needed).

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 (including 10mm socket)
•Torque wrench
•Coolant funnel
•Compressed air (for radiator cleaning)

Parts Required

•Replacement thermostat
•Coolant (manufacturer-recommended type)
•Replacement hoses (if found damaged)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect coolant level in the reservoir and radiator.
2
Check for visible leaks in the cooling system (hoses, radiator, water pump).
3
Scan the vehicle's computer for any diagnostic trouble codes (DTCs).
4
Test the thermostat for proper operation by checking its opening temperature.
5
Inspect the radiator for blockages or debris.
6
Verify the function of the radiator fans (check if they engage when needed).

Solution

1. Preparation

Gather tools and parts required for the repair.
Allow the engine to cool completely before starting work to prevent burns.
Disconnect the battery for safety.

2. Coolant Level and Leak Repair

Check Coolant Level: Open the coolant reservoir cap and inspect the fluid level. Top off with the manufacturer-recommended coolant if low.
Inspect for Leaks:
- Visually inspect hoses, the radiator, and the water pump for any signs of leaks.
- If leaks are found, replace the damaged hoses, radiator, or water pump as necessary.

3. Thermostat Replacement

Remove the Thermostat:
- Drain the coolant from the radiator into a clean container.
- Remove the thermostat housing bolts (typically 10mm).
- Carefully detach the housing and remove the thermostat.
Install New Thermostat:
- Clean the mating surfaces on the engine and housing to ensure a good seal.
- Place the new thermostat in the housing, ensuring it is oriented correctly (check the orientation marking).
- Reattach the thermostat housing and tighten bolts to the manufacturer’s specified torque (usually around 15-20 ft-lbs).

4. Radiator and Fan Inspection

Clean the Radiator: Remove any debris or obstructions from the front of the radiator. Use compressed air or a soft brush as needed.
Test Cooling Fans:
- Reconnect the battery and start the engine. Allow it to reach operating temperature.
- Check if the radiator fans engage when the engine reaches normal operating temperature. If not, replace the fan motor or check the relay.

5. Refill and Bleed Cooling System

Refill Coolant: Pour the appropriate coolant mixture back into the radiator and reservoir.
Bleed the System:
- Start the engine with the radiator cap off to allow air to escape from the system.
- Monitor the coolant level and top off as necessary until no more air bubbles appear.