It is a well-known metaphor that cars are much like humans. Just the way our bodies are affected by unusual temperature changes, cars too function in a similar manner. And the component that is highly responsible for regulating temperature changes in a vehicle is a thermostat. While the proper functioning of a thermostat is a must, in case the component fails, it can lead to disastrous outcomes. But before the component fails, it will generally give out a few warning signs. Here are 5 symptoms of a failing thermostat.

  1. Unusual Temperature Readings

    prevent car overheating
    Temperature Gauge

    When you start up your vehicle after a long rest, you will usually notice that the temperature gauge starts out from the cold side and eventually rise up to the mid, which is actually the optimum engine temperature. However, if there’s any malfunction with the thermostat, the coolant flow to the radiator will be affected. This means that if the thermostat is stuck closed, the temperature will continue to rise dangerously. While if the thermostat is stuck open, the temperature will likely stop before reaching the mid-point.

    Checkout: Why is your Car Overheating? Vehicle Cooling System Explained

  2. Cabin Temperature Changes

    Car AC service | Higher Cabin Temperature?
    Higher Cabin Temperature / Representation

    Another common symptom of a failing temperature gauge is sudden temperature changes inside the vehicle. If you happen to notice that the temperature inside your cabin suddenly drops and then rise again, this can be a sure shot symptom of a failing thermostat that requires replacement.

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  3. Coolant Leakage

    Leaking Coolant
    Leaking Coolant

    One of the most crucial signs of a failing or failed thermostat is coolant leakage. Generally, in most thermostat failures, the component is usually stuck closed. This means that when the coolant tries to reach the radiator, the thermostat blocks its path leading to an overflow of coolant that escapes from the thermostat housing. When this happens, a prominent coolant leakage can be noticed. Even if the thermostat isn’t faulty, make sure to get your vehicle checked up.

    Must Read: Which Is The Right Coolant For Your Car? | Coolant Colours Explained

  4. Strange Noises From The Engine Bay

    Noises From The Engine Bay

    If temperature changes weren’t enough, you will also experience strange noises from within the engine bay. These noises can arise from within the radiator, or the engine or even both. Resembling a knocking, boiling or gurgling sound, these strange noises can indicate a failed thermostat and a lot many problems in addition to it.

  5. Heater Malfunction

    Car Heater
    Heater Malfunction

    If you happen to live in colder environments, it is highly likely that your thermostat will be stuck open rather than being stuck closed, this means that you will experience a heater malfunction rather than an overheat. This means coolant will keep on flowing to the engine even when it doesn’t need it. Thus if you happen to live in colder climates, or are driving in winters make sure to check your heater as well.

    Even though problems with the thermostat are virtually impossible to avoid, a smarter step would be to replace a failing unit before it becomes a bigger pain. And when you decide to do that, make sure to choose the best in quality spares directly from GoMechanic Spares.

    Also Read: 6 Reasons Why Your Car Heater Isn’t Working Properly

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