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Why is my Ford Explorer running hot?

If your Ford Explorer is running hot, it could be due to a variety of issues, from a malfunctioning cooling system to a problem with the engine itself. In this article, we'll explore the common reasons why a Ford Explorer might overheat and provide some steps you can take to diagnose and fix the problem.


Potential Causes of Overheating in a Ford Explorer


There are several potential reasons why a Ford Explorer might be running hot:



  • Coolant Leak: A coolant leak in the radiator, hoses, or other components of the cooling system can cause the engine to overheat. This could be due to a crack, hole, or loose connection in the system.

  • Faulty Water Pump: The water pump is responsible for circulating coolant through the engine and radiator. If the water pump is not functioning properly, it can cause the engine to overheat.

  • Clogged Radiator: Over time, the radiator can become clogged with debris, reducing its ability to effectively cool the engine. This can lead to overheating.

  • Thermostat Malfunction: The thermostat is responsible for regulating the flow of coolant through the engine. If the thermostat is stuck closed, it can prevent the coolant from circulating properly and cause the engine to overheat.

  • Faulty Cooling Fan: The cooling fan helps draw air through the radiator to dissipate heat. If the fan is not working correctly, it can contribute to overheating.

  • Low Coolant Level: If the coolant level in the system is low, it can cause the engine to overheat. This could be due to a leak or simply not having enough coolant in the system.


It's important to diagnose the root cause of the overheating issue to ensure that the problem is properly addressed and does not continue to occur.


Diagnosing and Fixing an Overheating Ford Explorer


If your Ford Explorer is running hot, here are some steps you can take to diagnose and fix the problem:



  • Check the Coolant Level: Start by checking the coolant level in the overflow tank or radiator. Top up the coolant if necessary, and look for any signs of leaks.

  • Inspect the Cooling System: Visually inspect the radiator, hoses, and other cooling system components for any cracks, leaks, or damage.

  • Test the Thermostat: Remove the thermostat and place it in a pot of boiling water. If it doesn't open, the thermostat needs to be replaced.

  • Check the Water Pump: Listen for any unusual noises coming from the water pump, and check for any signs of leaks. If the water pump is faulty, it will need to be replaced.

  • Inspect the Cooling Fan: Make sure the cooling fan is turning on and off as expected. If the fan is not working, it may need to be repaired or replaced.

  • Flush the Cooling System: If the radiator is clogged, flushing the cooling system may help to clear any debris and improve coolant flow.


By following these steps, you should be able to identify and address the root cause of the overheating issue in your Ford Explorer. If the problem persists or you're unsure of the cause, it's best to have a professional mechanic diagnose and repair the issue.

How do you fix hot air blowing in a car?


DIY Diagnosis and Quick Fixes

  1. First, check the cabin air filter condition and replace it if it's dirty or clogged.
  2. Check that the heater fan is blowing.
  3. Clean off the radiator.
  4. Check all the wiring connections for the AC system that you can access.
  5. Check the refrigerant level and top it up.



How to tell if your thermostat or water pump is bad?


Here are signs you've got a bad pump or thermostat.

  1. Corroded Cooling System Parts. Both of these cooling system parts can get corroded if they start to leak slowly.
  2. Leaking Engine Coolant.
  3. Erratic Temperature Changes.
  4. Poor Coolant Circulation.
  5. Overheating Constantly.



How do I know if my Ford Explorer is overheating?


If the temperature gauge consistently moves towards the "H" or enters the red zone, it is a clear indication that your engine is overheating. One of the most noticeable signs of an overheating engine is the presence of steam or smoke coming from under the hood.



Why is my Ford running hot?


Debris, dirt, and mineral deposits can accumulate over time, leading to overheating problems. Regularly clean your radiator and ensure it is free from obstructions. The thermostat regulates the engine temperature by controlling the coolant flow. A faulty thermostat can cause the engine to overheat.



How to fix engine overheating?


Troubleshoot an engine overheating

  1. Step 1: Check the coolant level in the expansion tank and make sure water is in the radiator by removing the radiator cap.
  2. Step 2: Make sure there is no air in the system.
  3. Step 3: Make sure the radiator fans are spinning.
  4. Step 4: Test the fan motor.



What causes a Ford Explorer to overheat?


The most common reasons a Ford Explorer is overheating are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. Coolant leak (water pump, radiator, hose etc.)



How much does it cost to fix the heat in a Ford Explorer?


The average cost for a 2022 Ford Explorer Heater Core Replacement is between $861 and $1,045. Labor costs are estimated between $704 and $888 while parts are typically priced around $157. This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed.



Can you drive a car with a bad heater?


Faulty heater cores can lead to overheating, and driving with one can be risky. Overheating can cause engine damage, so it's important to be careful if you're driving with a car that has a faulty heater core.



Why is my car running hot but has coolant in it?


If your engine is overheating but the coolant is full, there may be an issue with the radiator or cooling system as a whole. This could be caused by anything from a mechanical fault of the radiator fan to a damaged expansion tank.



Why is my Ford Explorer blowing hot air?


The top three reasons your car AC is blowing hot air are: Loss of refrigerant. Broken condenser. Electrical system issues.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.