Can the Thermostat Be Removed in Summer?

[DelSavannah]

It is possible to remove the thermostat in summer, but doing so may prevent the engine from quickly reaching its optimal operating temperature. Below are the relevant details: 1. Device Overview: The thermostat automatically adjusts the amount of coolant entering the radiator based on the temperature of the cooling water, altering the circulation range to regulate the cooling system's efficiency and ensure the engine operates within the appropriate temperature range. 2. Working Principle: The most commonly used thermostat is the wax-type thermostat. The thermostat valve, under the force of a spring, closes the passage between the engine and the radiator, causing the coolant to return to the engine via the water pump, initiating a small internal circulation within the engine.

[LaMorgan]

I think it's best not to tamper with the car's thermostat in summer. Removing it might sound like a way to cool things down, but it actually causes problems. Having worked in car repair for over a decade, I've seen many people take this shortcut for convenience, only to end up with an engine that warms up as slowly as climbing a tree, taking forever to reach operating temperature. Engines are designed to work at around 90 degrees, and without a thermostat, the coolant flows continuously, keeping the car too cold. This increases friction, wearing out cylinders and pistons, especially when using air conditioning or stuck in traffic—performance actually gets worse. Over time, fuel consumption rises, emissions worsen, and other components are more prone to damage. If you really want to cool things down, just check the fan, radiator, or replace the coolant. The thermostat is the heart of the system; without it, cooling efficiency goes haywire. In short, maintenance is better than modification.

[HopeFitz]

I'm a rough-and-tumble driver who often takes long-haul trips. Last summer, my car kept steaming in hot weather. A fellow villager suggested trying to remove the thermostat, and foolishly, I went ahead with it. The first few kilometers were fine, but once I hit the highway, the engine became sluggish, the accelerator felt like dragging through mud, and fuel consumption shot up. Later, during a garage check, the mechanic scolded me, calling this move a disaster. The thermostat controls the coolant flow—without it, the engine kept running in the low-temperature zone, leading to poor lubrication, increased wear, and uneven cooling in hot weather. That’s when I realized trying to save money and effort backfired, costing me more in engine repairs. My advice: clean the radiator more often in summer, replace the coolant on time, and don’t mess with the thermostat. Safety comes first—don’t repeat my foolish mistake.

[SanJackson]

As a newbie who just bought a car, I was also curious whether I could remove the thermostat for convenience in summer. After checking some information, I learned that the thermostat controls the flow of coolant to help the engine warm up quickly and maintain an optimal temperature. Removing it would not only slow down the warm-up process but could also cause localized overheating or reduced efficiency in summer, along with increased pollution emissions. Fortunately, I didn’t tamper with it—instead, I replaced the coolant, and now the system runs smoothly. Sometimes, simple maintenance is the best approach.