Bad Thermostat Symptoms

A thermostat is a temperature-regulatory device in the cooling system of any engine. The device monitors the coolant temperature and regulates the exact flow of coolant that must pass through the radiator for optimum performance.

The thermostat helps maintain the temperature, making it essential to every HVAC system and other engines that need to dispel heat. It has a valve that blocks the flow of coolant when the engine needs to warm up. This valve also opens up to allow the coolant to flow when the engine's temperature needs to be cooled down.

Symptoms of a Bad Thermostat

The thermostat plays a crucial role in maintaining the efficiency of your vehicle. However, like any other mechanical component, thermostats can deteriorate over time, leading to engine issues.

Below are some symptoms that your thermostat is bad:

• Temperature Fluctuation
  Controlling temperature is a major function of the thermostat. So, when you notice it's not efficiently discharging its duties, that's a sign that it's faulty. For instance, your car temperature can suddenly drop or increase. Moreover, you won't be able to choose the temperature you want even when you turn the right dials.
• Wrong Temperature Readings
  Another primary pointer to a bad thermostat is the wrong temperature reading. Temperature reading usually starts from cool and goes up to the temperature in the vehicle. However, a bad thermostat will present an incorrect temperature, which needs to be clarified.
• Noise from the Engine Bay
  When you hear weird noises like knocking, boiling, or rumbling coming from the engine bay where your radiator is located, you should go and inspect. This may be because of the thermostat failure, and the radiator must work harder to ensure your engine isn't spoilt.
• Coolant Leak
  If your car's coolants and water leaks, it might indicate a bad thermostat. In most cases, this is because the gasket between the thermostat and the engine house might have been worn out.

Causes of a Bad Thermostat and How to Prevent Them

A thermostat doesn't just malfunction. Certain things would have happened to it to make it bad. Identifying these possible causes and knowing how to prevent them can help significantly prevent your thermostat from going bad and affecting your engine.

• Wear and Tear
  Like every other mechanical object, a thermostat is bound to age with time and use. When this happens, the thermostat may start fluctuating and failing its duties. Therefore, it is essential to inspect your thermostat regularly. Replace it immediately when you notice it's no longer at its full capacity.
• Dirt Accumulation
  Dirt accumulation is another reason your thermostat may have any of the symptoms above. When dirt, dust, and debris gather on parts of the thermostat, they may affect its responsiveness, leading to inefficiency. Also, dirt accumulation on the temperature sensor can cause inaccurate readings.
  Take out and clean your thermostat regularly to prevent this problem.
• Wiring Issues
  Wrong wires coming in contact can cause a thermostat to short circuit, making it malfunction. Similarly, damaged or loose wires can lead to problems in your thermostat, making it go bad. Therefore, it is important always to check your thermostat and have it wired by a professional to prevent problems.
• Battery Issues
  Battery issues are another common cause of thermostat problems. Digital thermostats rely on battery power to function. When the battering is weak, erratic, or even loses power, it can cause a failing thermostat. You can prevent this by using high-quality batteries and replacing them regularly.

Conclusion

The thermostat is a vital part of the HVAC system, generally making it a crucial part of the engine. Apart from its widely known temperature regulation function, it also helps conserve energy and improve an eco-friendly environment. As such, your thermostat must always be in optimum working condition.