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 and fix a coolant leak in your 2006 Mitsubishi Endeavor, start by visually inspecting the area beneath your vehicle for any signs of coolant, such as puddles or stains. This initial check can often reveal the leak's location. Next, conduct a pressure test on the cooling system, which can help identify leaks that are not immediately visible. Pay close attention to the radiator cap, as a damaged cap can lead to leaks. Inspect all hoses and connections for any signs of wear, such as cracks or bulges, and replace any damaged parts. The water pump is another critical component to examine, as leaks often originate from here. Additionally, check the heater core and radiator for any signs of leakage or corrosion. Once you have identified the source of the leak, proceed with the necessary repairs or replacements, whether that involves fixing a hose, replacing a gasket, or installing a new radiator. After addressing the leak, refill the cooling system with the appropriate coolant and conduct a final test to ensure the issue has been resolved. By following this systematic approach, you can effectively manage coolant leaks and maintain the integrity of your vehicle's cooling system.
When dealing with coolant leaks in a 2006 Mitsubishi Endeavor, it's essential to understand the common problems that may arise. One of the primary culprits is a damaged radiator, which can develop cracks or corrosion over time, leading to leaks. Additionally, worn-out hoses are another frequent issue; these rubber components can deteriorate due to heat and age, resulting in coolant escaping from the system. A faulty water pump is also a potential source of leaks, as it may fail to maintain proper pressure, causing coolant to seep from the engine. Furthermore, a cracked engine block, while less common, can lead to significant leaks and should be addressed immediately. Don't overlook the radiator cap, as a loose or damaged cap can allow coolant to escape. Lastly, a leaking heater core can contribute to coolant loss, often indicated by a sweet smell inside the vehicle or dampness on the passenger side. If you suspect any of these issues, conducting a thorough inspection can help you identify the source of the leak and take the necessary steps to repair it, ensuring your Endeavor runs smoothly and efficiently.
Addressing a coolant leak in a 2006 Mitsubishi Endeavor is of utmost urgency due to the critical role coolant plays in maintaining engine temperature. When coolant leaks occur, they can lead to overheating, which poses a serious risk of damaging vital engine components. Ignoring a coolant leak not only results in a gradual loss of coolant but also compromises the vehicle's performance, potentially leading to more extensive repairs down the line. The longer the leak goes unaddressed, the greater the risk of engine failure, which can be both costly and dangerous. Therefore, it is essential for DIY enthusiasts to act quickly when they notice signs of a coolant leak, ensuring the vehicle remains safe and operational while preventing further damage.
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