What are the symptoms of a faulty thermostat?

1 Answers
OAdelyn
07/25/25 6:08am
The symptoms of a faulty thermostat are: 1. If the thermostat fails to open, the temperature gauge will show the coolant temperature in the high-temperature zone, but the radiator fan won't turn on, the engine temperature will be high, and it's prone to losing antifreeze; 2. If the thermostat fails to close, the coolant temperature will rise slowly, especially in winter where it may stay in the low-temperature zone for 10 to 20 minutes, and the idle speed will be high. A thermostat is an automatic temperature-regulating device, usually containing a temperature-sensitive component that opens or closes the flow of coolant through expansion or contraction. It automatically adjusts the amount of water entering the radiator based on the coolant temperature, changing the circulation range of the coolant to regulate the cooling system's heat dissipation capacity.
Was this review help?
7
1
Share
More Forum Discussions

How to Initialize the Power Tailgate of GL8?

There are four ways to close the power tailgate of the Buick GL8: pressing the close button from the driver's seat, pressing the close button on the car key, pulling the door handle from the outside, and pressing the side button on the driver's seat. Below is some relevant information about the Buick GL8: Introduction to the Buick GL8: Since its debut in 1999, the Buick GL8 has undergone five generations of innovation and has won the favor of over 1.2 million users. Model Introduction: The all-new Buick GL8 Avenir family has body dimensions of 5219mm × 1878mm × 1799mm and a wheelbase of 3088mm. The Avenir-exclusive design elements are particularly striking throughout the vehicle: the exclusive three-dimensional mesh grille is inspired by the chainmail of medieval nobility, crafted with exquisite metal weaving techniques, presenting an elegant rhythm under different angles and light reflections.
5
0
Share

How Many Toyota Pickup Truck Models Are There?

Toyota has 5 pickup truck models. Below is an introduction about Toyota: Toyota's main vehicle models include Corolla, Camry, ES, Avalon, RAV4, and Highlander. Toyota's industries: Toyota's product range covers automobiles, steel, machine tools, pesticides, electronics, textile machinery, fiber products, household goods, chemicals, construction machinery, and the construction industry. In 1993, its total sales reached $85.283 billion, ranking 5th among global industrial companies. It produced 4.45 million vehicles that year, accounting for 9.4% of the global automobile market. Toyota is the world's largest automobile company and plays a pivotal role in the global automotive industry.
6
1
Share

What does the first gear frost, the second gear frostbite, and the third gear freeze?

The air conditioning in the old Jetta model is like the first gear frosts, the second gear frostbites, and the third gear lets you see the Northern Lights. Here is an introduction to the new Jetta: Exterior Design: The headlights are paired with currently popular black backing frames, a refined and elegant chrome grille, and the design of the front and rear bumpers integrates seamlessly with the Jetta's simple and robust body, making the connection between the front, fenders, and side profile more perfect. The interior design incorporates avant-garde, fashionable, and innovative elements, forming a unified interior style with other in-car configurations, offering both comfort and aesthetics. In terms of vehicle dimensions, the interior space is more spacious, providing a more comfortable ride, which better meets the needs of Chinese consumers for a dual-purpose family and business sedan. 1.4L EA211 Engine: The new Jetta 1.4L model is equipped with a 1.4L EA211 engine, which reaches its maximum power output of 66kW at 5500 rpm and its maximum torque of 132N-m at 3800 rpm. The small-displacement engine not only brings users lower vehicle operating costs but also achieves energy efficiency and environmental protection.
6
3
Share

What is the principle of an automatic transmission?

Automatic transmission works by the computer opening or closing certain oil passages in the valve body. The transmission oil pump then pressurizes the transmission fluid, which flows through the passages in the valve body to actuate the physical gear-shifting mechanisms, thereby engaging or shifting gears. The functions of the transmission are: 1. Changing the gear ratio to meet the varying traction needs under different driving conditions, allowing the engine to operate under favorable conditions; 2. Enabling the vehicle to move in reverse; 3. Interrupting power transmission—when the engine starts and idles, or when the vehicle shifts gears or stops, power transmission to the drive wheels is interrupted; 4. Engaging neutral gear—when the clutch is engaged, the transmission stops outputting power.
6
4
Share

Will ABS Activate When Braking at Low Speed?

ABS will not activate when braking at low speed. The functions of ABS are: 1. To fully utilize the effectiveness of the brakes, shortening braking time and distance; 2. To effectively prevent vehicle skidding and fishtailing during emergency braking, ensuring good driving stability; 3. To allow steering during emergency braking, providing good steering control; 4. To avoid severe friction between tires and the ground, reducing tire wear. The working principle of ABS is: During emergency braking, highly sensitive wheel speed sensors installed on each wheel detect wheel lock-up, and the computer controls the pressure regulator to release pressure from the wheel's brake caliper, preventing wheel lock-up.
17
4
Share

What is the actual fuel consumption of the Focus?

The actual fuel consumption of the Focus is 6.0-14.8L/100km. The currently available Focus models include 7 variants such as the 2021 Sedan Manual Fengyue, Sedan Automatic Fengchao, Hatchback Automatic Fengchao, and Sedan Automatic Fengyue. The official NEDC combined fuel consumption is 5.5-5.9L/100km. Among vehicles in the same class, the Xingrui has an NEDC combined fuel consumption of 6.7L/100km, the Corolla 4.0-5.6L/100km, the Civic 5.0-6.4L/100km, the Sagitar 5.3-5.6L/100km, and the Verano 5.2-6.3L/100km. The fuel consumption of a vehicle is directly influenced by five major factors: driving habits, the vehicle itself, road conditions, natural wind, and ambient temperature. Details are as follows: Driving habits: Aggressive driving behaviors such as sudden acceleration, frequent overtaking, and not easing off the throttle before reaching a red light can increase fuel consumption. The vehicle itself: Vehicles with larger engine displacements generally consume more fuel than those with smaller displacements because larger displacements typically produce more power, requiring more gasoline to burn and perform work. Heavier vehicles also tend to have higher fuel consumption due to the greater driving torque needed. Road conditions: Driving on unpaved roads, muddy roads, soft surfaces, or mountainous terrain increases resistance and fuel consumption. Natural wind: Driving against the wind or on windy days increases the vehicle's resistance and fuel consumption. Low ambient temperatures: When the engine block is cold, the injected gasoline does not atomize easily during cold starts, requiring more gasoline to be injected for combustion, which increases fuel consumption. Additionally, in cold temperatures, the engine's computer may control the engine to run at higher RPMs to warm up, further increasing fuel consumption.
18
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.