Signs of a Bad Vehicle Thermostat

Signs of a Bad Vehicle Thermostat

A car’s thermostat is a straightforward device that plays a significant role in your automobile. However, it can cause significant issues if it fails. A vehicle’s thermostat controls the flow of coolant throughout the engine and has a critical role in your vehicle’s functionality.

Most overheating issues occur due to faulty thermostats, and you should check them often. Fortunately, drivers can quickly detect and solve thermostat problems without a mechanic’s help. Kindly consider carrying out these basic maintenance practices to avoid a thermostat replacement.

Below we discuss the signs of a bad vehicle thermostat.

1. Engine Overheating

This is the main sign of a faulty thermostat. Remember, manufacturers put a mixture of wax and brass into a pellet and slip a metal rod through it. They then weld a metal near the pellet. Spring takes the skirt up when the engine gets cold, preventing the coolant flow. The wax also melts and expands when the engine heats up.

Expansion pressure reaches the point where the wax splits on the metal rod. The pellet eliminates itself eventually, allowing the thermostat to allow the coolant to flow. Remember, the entire system works perfectly till the rod corrodes.

This corroded part makes the wax leak as it destroys the rubber seal. The thermostat begins opening when this occurs, preventing the coolant from flowing. This can harm the engine and cost you thousands.

2. Temperature Fluctuations

Temperature fluctuations also signify a faulty thermostat; you should consider replacing it immediately if you notice this. The thermostat gate should be timed perfectly to ensure the engine gets the coolant at the appropriate temperature. Kindly ensure the timing is perfect as the engine temperature might fluctuate, making the gauge respond abnormally.

Electric issues in the coolant system can also cause temperature fluctuations, but you should never ignore this concern.

3. Heater Fluctuations

Heater fluctuations are also significant signs of a faulty thermostat, and you should take action immediately after they occur. These fluctuations occur when the thermostat fails to conduct its job. It is advisable to check your thermostat whenever your car’s heat and temperature fluctuate.

4. Visible Leakages

Remember, the engine’s coolant will leave its chamber due to high pressure, which happens if the thermostat is in bad condition. Overheated coolants make the pressure get high, causing leaks in the process.

Leaks are easily detectable since they mainly occur in white steam smoke.

5. Rising Temperatures

Kindly keep the thermostat flaps closed to prevent air from escaping to the radiator. The coolant heats up and turns into steam. However, the radiator coolant stays unchanged. A temperature rise signifies an issue with the thermostat, and you should address this issue immediately.

Rising coolant levels also signify the automobile is about to overheat.

Final Thoughts

The thermostat is crucial in an automobile, and drivers should take suitable precautions to increase its longevity. The above article has discussed the top signs of a faulty thermostat, including rising temperatures and visible leakages.

Kindly reach out to us for more information.