![]() Over time, internal deposits and even sludge can contaminate the coolant. Vehicle coolant should be a bright color, often green, yellow, or orange (but sometimes red, pink, or blue) and flow freely through the radiator and coolant passages within the engine. If you don’t fix the leak as soon as possible (or at the very least keep the coolant level topped off), your engine may overheat and even need expensive repairs due to internal damage. With even the slightest coolant leak, your vehicle will be forced to operate with an insufficient amount of coolant and the low coolant level light may illuminate in your dash. If a radiator flush is not regularly done, more and more rust will form and start eating away at the radiator tank. The rust inside your radiator often forms due to a low quality coolant or adding regular tap water (instead of distilled) to the coolant mix which has many more contaminants. Once this happens, you may be able to see small drops of coolant on your garage floor or driveway. The housing or cooling fins may develop tiny holes or cracks on them when the radiator is clogged due to severe rust buildup. Related: 3 Reasons for a Collapsed Radiator Hose #2 – Coolant Leaks This usually occurs from corrosion due to rust, internal deposit buildup over time, or debris getting stuck in the radiator which prevent the proper amount of coolant from circulating through the radiator and your engine. If the temperature falls slightly out of that range, it’s often not a cause for alarm, especially in summer months when the air conditioner is constantly running.īut if the temperature consistently stays on the hot side, it’s possible you have a clogged radiator. Some newer cars will display the temperature digitally and warn you when the engine temperature gets too high.Ī normal operating temperature for most cars is somewhere between 195 and 220 degrees F. Monitor the temperature gauge to see if the readings are higher than usual or if the needle is in the “red” zone. Since a functional radiator prevents the engine from overheating, you will know something is wrong with the radiator if the engine starts overheating. #6 – Heater for Passenger Area Not WorkingĬommon Symptoms of a Bad or Clogged Radiator #1 – High Temperature Gauge Readings.#5 – Bent or Damaged Fins on the Radiator.Common Symptoms of a Bad or Clogged Radiator.
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