why does my Ford Explorer Sixth Generation (2020-present) overheat when sitting in traffic

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

598 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 2020-present Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Cooling System

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Allow the engine to cool completely before opening the radiator cap or working on the cooling system.
•Wear gloves and safety glasses when handling coolant, as it is toxic.

Symptoms

•Engine temperature gauge rises significantly while idling
•Coolant warning light illuminated on the dashboard
•Steam or coolant visible from the engine compartment
•Poor air conditioning performance
•Unusual noises from the engine (such as bubbling or hissing)

Diagnostic Steps

1
Check the engine coolant level in the reservoir and radiator; top off if low.
2
Inspect the radiator and coolant hoses for leaks or blockages.
3
Test the operation of the electric cooling fans; they should engage when the engine reaches a certain temperature.
4
Use an OBD-II scanner to check for any stored trouble codes related to the cooling system.
5
Verify the thermostat's operation by monitoring the engine temperature during idle and while revving.
6
Examine the water pump for proper function and signs of wear or leaks.

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
•Torque wrench
•Multimeter
•Radiator funnel

Parts Required

•Replacement coolant
•New thermostat
•Water pump (if needed)
•Gaskets and seals as applicable

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the engine coolant level in the reservoir and radiator; top off if low.
2
Inspect the radiator and coolant hoses for leaks or blockages.
3
Test the operation of the electric cooling fans; they should engage when the engine reaches a certain temperature.
4
Use an OBD-II scanner to check for any stored trouble codes related to the cooling system.
5
Verify the thermostat's operation by monitoring the engine temperature during idle and while revving.
6
Examine the water pump for proper function and signs of wear or leaks.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the engine is cool before starting work.
Disconnect the battery to prevent any electrical issues while working on the cooling system.

2. Inspect and Replace Coolant

Tools Required: Radiator funnel, coolant tester.
Drain the existing coolant from the radiator using the drain valve.
Flush the system with a coolant flush solution if necessary.
Refill the cooling system with the manufacturer-recommended coolant mixture (typically a 50/50 mix of antifreeze and distilled water).

3. Replace Thermostat

Tools Required: Socket set, torque wrench, gasket scraper, replacement thermostat.
Remove the thermostat housing by loosening the bolts.
Take out the old thermostat and clean the mounting surface to remove any old gasket material.
Install the new thermostat, ensuring it is oriented correctly.
Reattach the thermostat housing and torque the bolts to the manufacturer's specifications.

4. Test Cooling Fans

Tools Required: Multimeter.
Reconnect the battery and start the engine.
Once the engine reaches operating temperature, check if the cooling fans activate.
If not, replace the cooling fan relay or the fans themselves as needed.

5. Inspect and Replace Water Pump (if necessary)

Tools Required: Socket set, torque wrench, replacement water pump.
Remove any components obstructing access to the water pump (e.g., serpentine belt).
Disconnect the hoses attached to the water pump and remove the pump from the engine.
Clean the mounting surface and install the new water pump, ensuring proper alignment and sealing.
Reconnect all hoses and components, then refill the cooling system.