Can the Engine Thermostat Be Removed in Summer?

[Nguyen]

No, removing the thermostat will prolong the warm-up time of the engine, thereby increasing fuel consumption and the chance of engine carbon buildup. You may consider replacing it with a thermostat that opens at a lower temperature. Below is an introduction to the thermostat: 1. Working Principle: The thermostat automatically adjusts the amount of water entering the radiator based on the temperature of the coolant, changing the water circulation range to regulate the cooling capacity of the radiator and ensure the engine operates within the appropriate temperature range. The thermostat must maintain good technical condition; otherwise, it will seriously affect the normal operation of the engine. 2. Function: It prevents the engine from becoming too cold. After the engine is running normally, during rapid driving in winter, if there is no thermostat, the engine temperature may become too low. In this case, the engine needs to temporarily stop the water circulation to ensure the engine temperature does not drop too low. The most commonly used thermostat is the wax-type thermostat. When the coolant temperature is below the specified value, the refined paraffin in the thermostat's temperature-sensitive body remains solid, and the thermostat valve closes the channel between the engine and the radiator under the action of the spring.

[LaMaya]

I have to say, it's best not to remove the engine's thermostat in summer. It may sound like a minor issue, but the actual impact is significant. The thermostat helps the engine quickly reach its optimal operating temperature, usually around 90 degrees Celsius. If you remove it, the summer heat might cause the engine to overheat initially or run too cold due to excessively fast coolant flow. I tried it once before, and my car stalled several times at traffic lights while fuel efficiency dropped by about 10%. Removing it may seem like a quick cooling fix, but it disrupts the cooling system's balance. Engine overheating can lead to issues like cylinder head gasket deformation or cylinder scoring, which are much costlier to repair. I recommend sticking to the original vehicle design—just replace old components if needed. Don’t forget to regularly check the radiator and fan to ensure they’re functioning properly. Overall, safe driving comes first—don’t let this small modification cause bigger problems.

[WilliamDella]

I always make it a habit to check my car before driving, and I don't recommend removing the thermostat in summer. The thermostat acts like a small switch regulating coolant flow, controlling its circulation speed. Without it, the engine may frequently fluctuate between high and low temperatures under hot conditions, increasing wear risks. Last week, my neighbor's car broke down on the highway due to a similar modification, costing a hefty repair bill. This not only affects fuel economy but may also lead to excessive pollutant emissions. Modern car designs are holistically optimized, and arbitrary modifications can disrupt system balance. If you're concerned about engine overheating, first check the fan operation or coolant level rather than taking this shortcut. Remember, safety comes first—keep the car in its original state. Summer road conditions are complex, and a small mistake can trigger big problems.

[DeRobert]

Having driven for decades, my experience tells me not to tamper with the engine thermostat. In summer when temperatures are high, removing it can cause the cooling system to go out of control. The thermostat ensures the engine heats up quickly and maintains stable operation. Without it, the car may operate at lower temperatures, leading to increased fuel consumption and more carbon deposits. It's like damaging a precision machine—an unnecessary little risk. I recommend regular maintenance and replacing old parts when needed, but not removing them.