Frequently Asked Questions Ask APW
What are the causes of Toyota 4Runner radiator leaks?
Answer: One is corrosion. Corrosion is probably the enemy of almost all car parts. In the case of radiators, corrosion happens when the 4Runner is constantly exposed to road salts, which easily corrodes metal. And since the metal weakens, it becomes an easy prey to leaks. Road debris and stones that get caught up on the underside of the car oftentimes puncture various components that are connected to the radiator. These small holes then speed up the damages caused by the leaks. Another frequent cause of radiator leaks is a weak radiator cap, which allows a significant loss of coolant from the overflow tube. The radiator cap is also responsible for locking in enough pressure needed by the radiator to function. So when the cap gets loose, pressure will be lost and leaks will most likely happen.
What are the early signs of radiator problems in a Toyota 4Runner?
Answer: The first sign that a radiator may be going bad is when the engine starts operating at a higher temperature. Although engine processes involve heat, the engine can only take up about 276 degrees. Anything more than that can cause problems with the engine. Another symptom to watch out for is leaks. Smoke or steam coming from the engine may also be indicators of a bad radiator. To be certain, examine the radiator, engine, and their components for damages.
What causes a radiator to overheat?
Answer: It happens when the thermostat malfunctions and is unable to keep the engine at a normal temperature. The thermostat fails to open properly, so the flow of heat is reduced. As a result, the engine overheats. This is also the case when the electric cooling fan breaks down. There is nothing to assist the radiator in keeping the temperature from rising. That's why the cooling system is not able to absorb heat as much as it should.