2012 Mitsubishi Galant Is Overheating

Common Causes of Overheating in Your 2012 Mitsubishi Galant and How to Resolve Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
24% chance it's the
Thermostat
0%
41% chance it's the
Coolant leak (water pump, radiator, hose etc.)
0%
32% chance it's the
Radiator Fan
0%
3% chance it's
Something else
The most common reasons a 2012 Mitsubishi Galant is overheating are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat.
  • Thermostat: A faulty thermostat can cause the engine to overheat or run too cool by failing to regulate the flow of coolant properly.
  • Coolant leak (water pump, radiator, hose etc.): A coolant leak can occur due to a damaged hose, a failing water pump, or a compromised radiator, leading to loss of coolant and potential engine overheating.
  • Radiator Fan: A faulty radiator fan can lead to engine overheating due to insufficient airflow over the radiator.
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.

What are the initial diagnostic steps to take for an overheating 2012 Mitsubishi Galant?

When faced with an overheating 2012 Mitsubishi Galant, it's essential to adopt a methodical diagnostic approach to identify the root cause of the problem. Start by checking the coolant level in both the radiator and the reservoir, as insufficient coolant can lead to overheating. If the coolant is low, refill it and monitor for any leaks, which can often be found under the vehicle or around the engine area. Next, inspect the radiator cap for any signs of wear or damage, as a faulty cap can disrupt the cooling system's pressure and lead to overheating. Additionally, verify that the radiator fan is operating correctly; a malfunctioning fan can hinder the engine's cooling process. It's also crucial to examine the thermostat to ensure it opens and closes as intended, as a stuck thermostat can trap heat in the engine. Lastly, take a close look at the water pump for any signs of leaks or damage, as a compromised water pump can impede coolant circulation. By following these steps, you can effectively diagnose and address the overheating issue in your Galant, potentially saving time and money on repairs.

What are the common problems that could cause a 2012 Mitsubishi Galant to overheat?

When dealing with overheating in a 2012 Mitsubishi Galant, it's essential to understand the common problems that could be at play. One of the primary culprits is coolant leaks, which can significantly reduce coolant levels and lead to engine overheating. Additionally, a faulty thermostat may fail to open, preventing the engine from cooling down properly. Radiator issues, such as clogs or leaks, can also hinder the cooling process, while a malfunctioning water pump can disrupt the circulation of coolant, exacerbating the overheating problem. Furthermore, if the cooling fans are not operating effectively, they may not provide adequate airflow to the radiator, leading to increased engine temperatures. Lastly, a blocked radiator can restrict airflow, further contributing to overheating. By identifying and addressing these issues promptly, DIY enthusiasts can help ensure their Mitsubishi Galant runs smoothly and efficiently.

How urgent is it to address the overheating issue in a 2012 Mitsubishi Galant?

Addressing the overheating issue in your 2012 Mitsubishi Galant is not just a matter of convenience; it is a pressing concern that demands immediate attention. Overheating can lead to severe engine damage, including warped cylinder heads and blown head gaskets, which can escalate repair costs significantly. Ignoring these symptoms can result in catastrophic engine failure, leaving you with a hefty repair bill or the need for a complete engine replacement. Moreover, continuous overheating can compromise other vital components of your vehicle, further increasing the financial burden. Beyond the monetary implications, an overheating engine can severely impact your vehicle's performance and efficiency, making it less reliable on the road. Therefore, it is essential to prioritize the maintenance of your cooling system to prevent overheating, ensuring the longevity and safety of your vehicle. Taking prompt action not only protects your investment but also enhances your driving experience.

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