Warm coolant from your engine is pumped through the heater core, then your cabin ventilation system uses that to heat the air in the cabin of your vehicle. Heater CoreĪs discussed above, your heater core is located under your dashboard near the cabin ventilation fan. Since you already will have it apart, consider replacing the thermostat as well since it is a relatively inexpensive part. In this case, consider replacing the thermostat housing gasket. It is possible that the thermostat housing can develop a leak where it is bolted together. This housing is usually bolted on so that it can be easily removed if you need to replace the thermostat. It’s likely near the water pump and enclosed in a housing that is near one of the hoses going to the radiator at the front of your vehicle. The thermostat is usually on the top of the engine, but in many makes can be located on the bottom (Subarus, for instance). Here is more information on how to fix a radiator hose leak. In this case, the best thing to do is purchase a new hose and clamps and replace the broken hose. Overtime, due to heat and age, the ends of those hoses can become brittle and begin to crack where they are attached causing small leaks. So, that hose will travel from the motor back to the firewall or the rear of the engine bay. There are also two hoses that carry coolant to and from the heater core, which is most likely located under your dashboard. One hose carries coolant from the bottom of the radiator into the water pump and another hose carries coolant from the top of the engine back to the radiator. There are at least four hoses associated with the cooling system in your vehicle. Here are a few common places for leaks to show up and how to deal with them: Once you suspect a leak, identifying the source of your automobile coolant leak is a crucial step in understanding how to fix it. Here are a few common symptoms that might Indicate an automobile coolant leak: Many vehicles have a sensor in the coolant reservoir that will illuminate a light or message on your dashboard when the reservoir gets too low so if you see that message add coolant and check for leaks. If you notice the level dropping steadily then you’ve got a leak somewhere. So, you need to check the level when your vehicle is either all the way warmed up or completely cold. Remember, your coolant expands and changes the level. Do I Have a Coolant Leak?Ĭhecking the coolant level regularly is the best way to find out if you have a leak. To learn more check out our article on engine overheating. If your engine overheats, it can cause significant damage to the block, heads and other components. Once it is low, there will not be enough coolant to keep your engine at the normal operating temperature and the engine will overheat. If your car is leaking coolant, it will run normally until the coolant level gets too low. How to Fix an Automobile Coolant Leak Can I Drive With a Coolant Leak?īefore we get to how to fix a coolant leak, let’s talk about why it is important to fix your leak quickly.
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