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.
When the head gasket begins to fail, the engine may have no symptoms at all. They only begin to occur when the leak has reached an engine oil passage, engine coolant passage or the engine cylinder.
When that happens, the engine may be very difficult to start, and run roughly when idling. There may be oil or coolant leaking, and the engine may begin to overheat, or at least run hot. At this point, there may be coolant in the engine oil pan — this will look creamy and lighter in color than the oil. Also, the radiator or engine coolant reservoir may have a gurgling sound, the presence engine oil, or smell of combustion. And the check engine light will come on.
The coolant being burned in the engine will produce white exhaust that smells sweet, like engine coolant. When the head gasket fails completely, the engine will overheat within minutes of starting, will stall and then won't restart.
A failing heater core may cause the car's interior to smell like engine coolant. The smell will become worse when the heater is turned on. The engine may also begin to run hotter until the vehicle is repaired.
The worst-case scenario is the engine overheating, which can cause extensive engine damage.
If the heater core is clogged, the air that blows when the heater is turned on will not be very hot.
Problems with the intake manifold gasket can create the following symptoms:
» LEARN MORE: Intake manifold gasket symptoms
A failing radiator can cause the engine to run hot or overheat. Most radiators are made of metal and plastic. The plastic parts can become brittle and crack over time, causing a leak of coolant (typically green or pink in color). All manufacturers have a recommended service interval for coolant renewal. As the coolant ages, the additives breakdown and being to form solid deposits. These deposits will build up in the passages of the cooling system and will eventually clog components, including the radiator. A leaking or clogged radiator must be replaced. Some automatic transmission cars will also have a transmission cooler integrated into the radiator. Lines going to and from the transmission circulate transmission fluid to help cool the transmission in heavy duty applications such as towing or off-roading. If this integrated cooler fails, it can allow transmission fluid and coolant to mix. This will causing shifting issues in addition to overheating.
A coolant leak may be noted from the hoses. Coolant hoses can be damaged by oil leaks, or age. This will lead to swelling or cracking, it is suggested to replace the hoses before they begin leaking to avoid potential overheating.
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
The two most common signs of a bad pump are leaks and noises.
Leaking water pumps can result in damage to the drive and timing belts, and cause the engine to overheat. A failed water pump can be caused by other problems in the cooling system, such as a bad thermostat, radiator or head gasket.
To effectively diagnose a coolant leak in your 2009 Mitsubishi Galant, begin with a thorough visual inspection of the vehicle. Look for any visible signs of coolant pooling under the car or around critical components such as the radiator, hoses, and water pump. If you don’t spot any obvious leaks, proceed to perform a pressure test on the cooling system. This involves using a hand pump to pressurize the system, which can help reveal hidden leaks that may not be immediately visible. Additionally, keep an eye on the coolant levels; a consistent drop in levels can indicate a leak. Don’t forget to inspect the radiator cap for any signs of damage, as a faulty cap can also lead to leaks. Examine all hoses and connections for cracks or bulges, which are common culprits in coolant leaks. Lastly, be alert for any white smoke from the exhaust, as this could signal coolant entering the combustion chamber. By following this diagnostic approach, you can systematically identify and address any coolant leak issues in your Galant.
When dealing with coolant leaks in a 2009 Mitsubishi Galant, it's essential to understand the common culprits that may be at play. One frequent issue is a damaged radiator, which can develop cracks or corrosion over time, leading to leaks. Additionally, a faulty radiator cap can disrupt the pressure balance within the cooling system, resulting in coolant escaping. Worn-out hoses are another common source of leaks; as they age, they can crack or become brittle, allowing coolant to seep out. The water pump, responsible for circulating coolant, can also fail and leak, particularly if its seals are compromised. In more severe cases, a cracked engine block may be the source of the problem, which can lead to significant engine damage if not addressed. Lastly, loose or damaged hose clamps can prevent a proper seal, causing coolant to leak from the connections. Regular inspections and maintenance are crucial for identifying these issues early, ensuring your Galant runs smoothly and preventing overheating.
Addressing a coolant leak in your 2009 Mitsubishi Galant is not just a matter of routine maintenance; it is a crucial step in safeguarding your vehicle's performance and longevity. Coolant plays a vital role in regulating engine temperature, and a leak can quickly lead to overheating, which poses a serious risk of engine damage. If left unchecked, the engine may run excessively hot, resulting in catastrophic failures that could leave you stranded and facing costly repairs. Moreover, a coolant leak can diminish your vehicle's overall performance, leading to decreased fuel efficiency and potential harm to other engine components. By tackling a coolant leak promptly, you not only protect your engine from severe damage but also enhance your vehicle's reliability and safety on the road. Therefore, if you notice any signs of a coolant leak, it is imperative to address the issue immediately to avoid further complications and ensure a smooth driving experience.
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