{"id":10030,"date":"2021-07-08T18:24:44","date_gmt":"2021-07-08T18:24:44","guid":{"rendered":"https:\/\/www.dubizzle.com\/blog\/cars\/?p=10030"},"modified":"2022-03-08T13:12:13","modified_gmt":"2022-03-08T13:12:13","slug":"bad-car-thermostat-symptoms","status":"publish","type":"post","link":"https:\/\/www.dubizzle.com\/blog\/cars\/bad-car-thermostat-symptoms\/","title":{"rendered":"Signs Your Car Has a Bad Thermostat"},"content":{"rendered":"\n

A thermostat of a car is responsible for controlling the flow of coolant in the engine. It also allows the engine to maintain a car\u2019s temperature no matter the weather. If this simple device goes bad, you might face a serious problem with your car\u2019s performance. It can eventually lead to severe engine damage as well. <\/p>\n\n\n\n

Thermostat failure can happen for many reasons, and there are several ways to identify a problem. Today, we will discuss the five most common bad car thermostat symptoms that indicate it’s time for a repair or replacement.<\/p>\n\n\n\n

Five Bad Car Thermostat Symptoms<\/h2>\n\n\n\n

1- Overheating<\/h3>\n\n\n\n

Vehicle overheating is one of the major bad car thermostat symptoms that can cause fatal consequences. When the temperature of the engine reaches its normal operating temperature, the thermostat allows the engine to control the heat. <\/p>\n\n\n\n

What happens when a thermostat gets too hot? If the car thermostat<\/a> is bad, it won\u2019t allow coolant from flowing into the engine, which ultimately causes the car to overheat. So when this happens one of the possible causes is a broken thermostat.<\/p>\n\n\n\n

Can you drive a car with a bad thermostat? If you continue to drive a vehicle in this condition, it increases the chances of damaging the engine in the long run. This is why it is important to keep an eye on signs that the vehicle thermostat is not working to avoid any danger during a drive.<\/p>\n\n\n\n

2- Heater Malfunction<\/h3>\n\n\n\n
\"Mechanic
Take your car to a mechanic, if you find signs of a bad thermostat in your home<\/figcaption><\/figure>\n\n\n\n

Locking the thermostat in an open position is one of the reasons car heater not working<\/a>. The coolant will constantly flow in the engine regardless of whether it is warm enough to need it. If you turn the car\u2019s heater on and the thermostat is open,\u00a0 cool air will constantly come out from the HVAC even if you raise the heater temperature. In other words, instead of getting too hot all the time, the engine has a problem with being too cold.<\/p>\n\n\n\n

3- Temperature Fluctuations<\/h3>\n\n\n\n

A faulty thermostat will result in strange temperature changes during engine operation. In this case, the thermostat will not get stuck in one position, but there will still be false readings causing control issues. The engine temperature will change unpredictably and the radiator coolant will not flow normally.<\/p>\n\n\n\n

4- Poor Engine Performance<\/h3>\n\n\n\n

A defective thermostat will affect your car\u2019s engine performance because the car\u2019s engine runs ideally at a certain temperature? between 90\u00b0C to 104\u00b0C. While overheating of the thermostat can degrade performance, low engine temperature can also impair your car\u2019s engine performance. <\/p>\n\n\n\n

5- Rumbling Noises<\/h3>\n\n\n\n
\"Checking
Always check the signs and understand how does a bad thermostat look like<\/figcaption><\/figure>\n\n\n\n

One of the notable symptoms of a stuck open thermostat is that you start hearing rumbling noises from your vehicle. The noises may come from the vehicle\u2019s engine, radiator, or both. The noise can be heard as a boiling sound, gurgling sound, or knocking sound. Therefore, when you start hearing such noises or experiencing the above bad car thermostat symptoms, you most probably have a bad thermostat engine.<\/p>\n\n\n\n

Things to Consider<\/h2>\n\n\n\n

There are a few things that can help you if your car thermostat not working properly. <\/p>\n\n\n\n