2010 Dodge Ram 1500 Radiator Fan Isn't Working

Fixing the Non-Working Radiator Fan in a 2010 Dodge Ram 1500

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
34% chance it's the
Fan Motor or Clutch
0%
28% chance it's the
Fan Relay or Fuse
0%
23% chance it's the
Temp Sensor or Fan Control Module
0%
15% chance it's
Something else
The most common reasons a 2010 Dodge Ram 1500 radiator fan isn't working are the fan assembly, the fan clutch, or the coolant temperature sensor.
  • Fan Motor or Clutch: A faulty fan motor or a malfunctioning fan clutch can result in inadequate cooling, causing the engine to overheat.
  • Fan Relay or Fuse: A faulty fan relay or blown fuse can prevent the cooling fan from operating, leading to engine overheating.
  • Temp Sensor or Fan Control Module: A faulty temperature sensor or fan control module can result in incorrect readings, causing the engine to overheat or the cooling fan to operate improperly.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2010 Dodge Ram 1500 radiator fan isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Over time serpentine belts stretch, crack, and the ribs that ride on the accessory pulleys being to wear smooth. A squealing noise that increases with engine speed or as engine driven accessories are turned on may be noted. The noise is caused by the belt slipping on the pulleys, insufficiently driving them. Ineffective air conditioning, a battery warning light, or intermittent power steering assist can result from this.

»MORE: Symptoms of a bad serpentine belt

The first indication of a defective fan clutch is a healthy cooling system that runs below or above the normal temperature range. This is due to the fan running too fast or too slow. Also, a seized cooling fan will cause a loud roaring fan noise from under the hood every time the accelerator is pressed, and the engine will feel as if it lacks power. In this situation it would be very difficult to turn the engine cooling fan by hand, of course when the vehicle is off. Finally, if the clutch fails the fan will either turn very slowly, and not respond well to engine speed.

The bad thermostat can cause two different sets of problems, depending on whether it's stuck open or stuck closed.

A thermostat that is stuck open can cause the engine to run colder than normal and turn on the check engine light. It may also cause poor fuel mileage and the heater to blow cool air.

A thermostat that is stuck closed will cause the vehicle to overheat. If a new thermostat doesn't resolve engine temperature problems, the cooling system needs to be checked for other issues.

» LEARN MORE: Signs of a bad thermostat, and how to fix it

When the engine coolant temperature sensor fails, it will send inaccurate information to the vehicle’s computer, causing the computer to react to false operating conditions. This will cause the engine to consume more fuel than normal, depleting fuel mileage, and causing black, sooty smoke from the engine under moderate to heavy acceleration. The check engine light will illuminate, and on-board diagnostic trouble codes may be stored for exhaust and emission system failure, fuel delivery system failure, and engine cooling system failure. Overheating may also occur, as the coolant sensor may be leaking fluid out of the engine, creating a an air pocket in the system.

When the radiator fans stop functioning properly, the engine temperature will rise. The spike in temperature will be highest when the vehicle is idling at a stop, but should subside once the vehicle begins moving again.

Additionally, the air conditioner typically won't blow as cold. This is because the air from the radiator fans also blows across the air conditioning condenser, so when the fans fail, both systems suffer.

You'll also usually see the check engine light and notice a drop in fuel economy. It's possible the fan will start making noise if it's failing, as well.

What steps should I take to diagnose the non-functioning radiator fan in my 2010 Dodge Ram 1500?

To effectively diagnose the non-functioning radiator fan in your 2010 Dodge Ram 1500, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the fuse associated with the radiator fan; a blown fuse is a common and easily fixable issue that can halt fan operation. If the fuse is intact, proceed to examine the relay, which controls the power supply to the fan. A malfunctioning relay may require replacement to restore functionality. Next, test the fan motor directly by applying power to it; if it fails to operate, this could indicate that the motor itself needs replacement. Additionally, check the temperature sensor, as a faulty sensor may not signal the fan to activate when necessary. Ensure that all wiring and connections are secure and undamaged, as any faults here can disrupt power flow to the fan. Finally, consider using a diagnostic scanner to identify any trouble codes related to the cooling system, which can provide further insights into the underlying issues. By following this structured diagnostic approach, you can efficiently identify and address the problem with your radiator fan.

What are the common problems that could cause the radiator fan to stop working in a 2010 Dodge Ram 1500?

When diagnosing why the radiator fan in a 2010 Dodge Ram 1500 has stopped working, it's essential to consider several common issues that could be at play. One of the primary culprits is the fan assembly itself, which may have suffered damage or wear over time. Additionally, the fan clutch, responsible for engaging the fan when needed, can fail, leading to inadequate cooling. Another critical component to inspect is the coolant temperature sensor; if it malfunctions, it may not signal the fan to activate, resulting in overheating. Furthermore, the fan motor could also be a source of the problem, as electrical failures or mechanical issues within the motor can prevent it from operating. Addressing these potential failures promptly is crucial, as a non-functioning radiator fan can lead to severe engine overheating, risking significant damage to your vehicle. By systematically checking these components, you can effectively troubleshoot and resolve the issue, ensuring your Dodge Ram 1500 remains in optimal working condition.

How urgent is it to repair the non-working radiator fan in a 2010 Dodge Ram 1500 to prevent overheating and potential engine damage?

Repairing the non-working radiator fan in your 2010 Dodge Ram 1500 is an urgent matter that should not be overlooked. The radiator fan is essential for maintaining optimal engine temperature by effectively dissipating heat from the radiator. When this component fails, the risk of engine overheating significantly increases, which can lead to severe consequences such as warping or cracking of engine parts, damage to the cylinder head gasket, or even complete engine failure. These issues not only compromise the vehicle's performance but can also result in costly repairs or the need for a full engine replacement. Therefore, addressing any signs of a malfunctioning radiator fan promptly is crucial to ensure the longevity and reliability of your vehicle, safeguarding it against the potential dangers of overheating and extensive damage.

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