![]() ![]() The coolant level sensor light stays on: The coolant level sensor light comes on the dashboard in many of today's modern cars, trucks, and SUV's when the coolant level is low inside the radiator. The leak could be coming from multiple sources including a loose coolant line that is connected to the reservoir, a crack in the coolant reservoir or the cap of the reservoir being damaged. Noted below are a few of the warning signs that will alert you that the coolant reservoir is damaged and needs to be replaced.Ĭoolant is leaking under the motor: If you notice that there is coolant or what appears to be colored water under your vehicle, specifically under the passenger side engine compartment, this could be an indication that the coolant reservoir is damaged. Any one of these components or several of them may fail and lead to a problem with the cooling system. ![]() The coolant system has many individual components that must all work together in order to keep an engine running cool and strong. Part 1 of 3: Diagnosing a problem with the coolant reservoirīefore you make the decision to replace the coolant reservoir, it's very important for you to properly diagnose the symptoms to ensure that this part is the reason why you're experiencing problems. If this occurs, you'll have to replace the coolant reservoir: a rather simple process that most DIY mechanics can complete without too many complications. However, due to its design, location and material, the coolant reservoir is also susceptible to wear and tear and in many cases may crack or develop leaks. The coolant reservoir is an integral part of the system, and since the coolant reservoir is a part of the entire cooling system, it's critical for it to be in working order every day. Most coolant reservoirs are made of out of durable plastic and are mounted on the upper right hand side of the engine compartment. The coolant overflow reservoir is designed as a relief valve of sorts that stores extra coolant for the radiator. However, one fact about coolant is that it expands as it gets hotter. Once the coolant returns to the radiator, it is circulated through multiple chambers to cool down and repeat the process continuously. Coolant is placed into a radiator and is circulated through the engine block, absorbing heat from the metal pieces inside the motor that create horsepower. This will allow the cooling system to expunge the air which will cause lowering the cooling ability and regulate the coolant pressure.The radiator and coolant system on most cars, trucks and SUV's sold in America today are extremely simplistic in design and function. As the coolant expands, the fluid is forced into the tank by the lower hose, thus forcing air to escape into the tank. This releases pressure as it opens to allow the coolant to expand. The tank is equipped with an open vent cap. Step 6 - Finishing Touchesīe sure to check the proper levels of fluid in the tank before you go to refill it. The mounting bolts will be turned clockwise and then you can plug the adapter back in securely. Once the new tank is in place, gently replace the computer and any other engine components that were removed. The OEM models have the pinch type clamps. You may have to pinch them or they may be the screw type. Step 4 - Connecting the TankĬonnect the new radiator overflow tank’s lower hose by connecting it to the nipple and tighten the hose clamp. If the bolts are over tightened they can split the tank. ![]() You can now put the new tank in and position it so that you can secure the bolts, but do not over tighten them. So carefully set aside the computer to remove the reservoir. Sometimes you will find the computer to the car on top of the reservoir. Pull the old radiator overflow tank free to remove it. If you have an elongated tank, look for bolts that may be hidden by engine components. Then turn the mounting bolts counterclockwise to loosen them. Release the hose clamp and pull firmly to unplug the reservoir from the tank. Now that you have the tools in hand it is time to remove the old radiator overflow tank. ![]()
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