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.
When diagnosing a coolant leak in your 2012 Volvo XC60, it's crucial to follow a methodical diagnostic approach that starts with straightforward checks and advances to more intricate techniques. Begin with a visual inspection, looking for any signs of coolant leakage under the hood and beneath the vehicle, such as puddles or white residue, which can indicate a leak. Regularly monitor the coolant level in the reservoir; a sudden drop may suggest a leak that requires immediate attention. Next, inspect the hoses connected to the radiator and engine for any signs of wear, such as cracks or bulges, as these are common sources of leaks. If these preliminary checks do not reveal the issue, consider conducting a pressure test on the cooling system, which can help identify the leak's location by pressurizing the system. For a more accurate diagnosis, adding UV dye to the coolant can be particularly effective, as it will glow under UV light, making it easier to trace the source of the leak. If you are still unable to locate the leak or if the problem continues, it may be wise to consult a professional mechanic who possesses the expertise and tools necessary for a comprehensive diagnosis and repair. By adhering to this structured approach, you can efficiently identify and resolve coolant leaks in your vehicle.
When dealing with coolant leaks in a 2012 Volvo XC60, it's crucial to understand the various common problems that can arise within the cooling system. One of the primary culprits is leaks in the cooling system itself, which can often be identified by coolant pooling under the vehicle or a sweet odor when the engine is running. Additionally, a blocked radiator can create excessive pressure, leading to leaks, which may present as drops of coolant on your garage floor. It's also important to inspect the hoses for deterioration, as old or worn hoses can crack and break, particularly at the joints. Regular checks for damage or corrosion in the radiator are essential, as these issues can also lead to coolant loss. Furthermore, malfunctioning water pumps can contribute to leaks, so examining the water pump for any signs of damage is advisable. Lastly, be aware of head gasket leaks, which can manifest as visible leaks, engine overheating, or low coolant levels in the reservoir. By understanding these common causes, DIYers can take proactive steps to diagnose and resolve coolant leaks, ultimately preventing more severe engine problems down the line.
Addressing a coolant leak in your 2012 Volvo XC60 is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. Ignoring a coolant leak can lead to severe engine damage, as the coolant is essential for regulating engine temperature. If coolant escapes onto hot engine components, it can create steam or smoke, signaling a potentially catastrophic problem that requires urgent intervention. Continuing to drive with a coolant leak increases the risk of engine overheating, which can result in extensive damage and costly repairs. The longer you wait to fix the leak, the more likely you are to face significant performance issues and a shortened lifespan for your vehicle. Therefore, it is imperative to address any signs of a coolant leak as soon as possible to safeguard your engine's health and ensure the longevity of your Volvo XC60.
See what others are asking about their Volvo XC60. Get answers from RepairPal's community of auto experts and enthusiasts.
Read about related problems experienced by other Volvo XC60 drivers like you.