2009 Pontiac Vibe Radiator Fan Isn't Working

Diagnosing the Causes of a Non-Functional Radiator Fan in Your 2009 Pontiac Vibe and How to Fix It

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Reviewed by
Devin Cabugcal
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 2009 Pontiac Vibe 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 2009 Pontiac Vibe 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 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.

What steps should I take to diagnose the non-functioning radiator fan in my 2009 Pontiac Vibe?

To effectively diagnose the non-functioning radiator fan in your 2009 Pontiac Vibe, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the fan assembly, fan clutch, and coolant temperature sensor, as these components are often the culprits behind fan malfunctions. Next, test the radiator fan motor directly by using jumper wires to connect it to the battery; if the fan spins at full speed, the motor is likely functioning properly. Following this, check the fuses associated with the electric radiator fans, replacing any that are blown, and ensure that the replacement fuses do not blow again, which could indicate a deeper issue. Additionally, examine the starter relay, as a faulty relay can prevent the fan from operating. If the A/C system is not functioning, it may also impact the fan's operation, so troubleshooting this system could provide further insights. Lastly, verify the fan speed control switch to ensure it is correctly selecting the appropriate settings. By following this structured diagnostic approach, you can efficiently identify the root cause of the radiator fan issue and take the necessary steps to resolve it.

What are the common problems that could cause the radiator fan to stop working in a 2009 Pontiac Vibe?

When troubleshooting a non-functioning radiator fan in a 2009 Pontiac Vibe, it's essential to consider several common problems that could be at play. A faulty fan motor is often the primary culprit, as it can fail to spin and lead to overheating. Additionally, a blown fuse in the fan circuit can interrupt the power supply, preventing the fan from operating altogether. Another potential issue is a defective relay, which is responsible for controlling the power to the fan; if this component malfunctions, the fan may not turn on when needed. It's also important to inspect the fan blades for any damage, as broken blades can hinder air circulation and exacerbate overheating issues. Furthermore, a malfunctioning coolant temperature sensor can send incorrect signals, causing the fan to remain inactive despite rising temperatures. Lastly, wiring issues can disrupt the electrical connection between the fan and the vehicle's system, leading to a complete failure of the fan to operate. By systematically checking these components, you can effectively diagnose and resolve the issue with your radiator fan.

How urgent is it to repair the non-functioning radiator fan in a 2009 Pontiac Vibe to prevent engine overheating?

Repairing the non-functioning radiator fan in a 2009 Pontiac Vibe is an urgent matter that should not be overlooked. The radiator fan is essential for maintaining optimal engine temperature by facilitating heat dissipation from the radiator. When this component fails, the risk of engine overheating significantly increases, which can lead to severe consequences such as warping of the cylinder head or damage to the engine block. These issues not only compromise the vehicle's performance but can also result in costly repairs that could have been avoided with timely intervention. Additionally, an overheating engine can adversely affect other critical components, including the water pump and thermostat, creating a chain reaction of mechanical failures. Therefore, addressing the malfunctioning radiator fan promptly is crucial for ensuring the vehicle's reliability, efficiency, and longevity, making it a priority for any DIY repair enthusiast.

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2009 Pontiac Vibe Radiator Fan Issues: Causes & Solutions