Browse

Property For Sale Property For Rent

Used Cars Others

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Others Pet Supplies Sporting Goods Ticket Toys Games Transportation

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Vehicle rentals Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

···

Log in / Register

What are the causes of high automatic transmission temperature?

3 Answers

McZoe

09/04/25 2:33am

Automatic transmission temperature can become high due to the following reasons: 1. Clogged pump suction filter screen; 2. Poor radiator cooling capacity; 3. Severe machine overload operation; 4. Severe wear or damage to the transmission hydraulic pump; 5. Serious system leakage, improper operation of the torque converter inlet proportional valve; 6. High clutch slippage in the transmission. An automatic transmission is a gear-shifting device that can automatically change gears based on vehicle speed and engine RPM, as opposed to a manual transmission. Common types of automotive automatic transmissions include hydraulic automatic transmissions (AT), continuously variable transmissions (CVT), automated manual transmissions (AMT), and dual-clutch transmissions.

Was this review help?

9

1

Share

HoldenAnn

09/16/25 3:48am

As an experienced driver with years of driving experience, I've found that the main causes of automatic transmission temperature rise are usage habits and maintenance issues. Frequent towing of heavy loads or driving on continuous steep slopes puts excessive load on the transmission, generating excessive friction heat that the fluid cannot dissipate in time. Insufficient fluid level is also critical, as low oil level leads to poor circulation and ineffective cooling. Regarding the cooling system, clogged radiators or faulty cooling fans reduce heat exchange efficiency. Slipping clutches or brake bands can further contribute to additional heat accumulation. If the ventilation system is blocked by dust, heat gets trapped inside. Aged and deteriorated fluid loses its effectiveness in lubrication and heat conduction, also contributing to temperature rise. To avoid this situation, I recommend regularly checking the fluid level to ensure it's within the normal range, controlling weight when towing, cleaning the radiator before long-distance driving, and replacing the fluid every 3 years to maintain system health.

Was this review help?

12

2

Share

Expand All

McIan

10/30/25 4:24am

From a mechanical structure perspective, the causes of transmission overheating lie in the interaction of internal components. Oil pump failure or clogged oil passages restrict fluid flow, causing heat buildup between gears and bearings. Worn or improperly adjusted clutch elements can slip and generate frictional heat. Cooling system issues like radiator pipe leaks or fan malfunctions lead to insufficient oil cooling. Degraded transmission fluid loses viscosity and fails to dissipate heat effectively. Abnormal transmission control module operation may erroneously trigger overheating mode. During diagnosis, using a temperature detector helps locate heat source origins. I recommend regularly checking fluid condition and cooling fan operation, along with preventive part replacement to extend transmission lifespan.

Was this review help?

12

3

Share

Expand All

More Forum Discussions

What are the hazards of a faulty thermostat?

The hazards of a faulty thermostat to a car are as follows: 1. A faulty thermostat can cause the cooling water temperature to go out of control. When designing the cooling system, the maximum heat dissipation capacity is based on ensuring reliable cooling for the engine under the most challenging conditions, such as high load, low speed, and high external temperature. Obviously, under conditions of low load, high speed, and low external temperature, the heat dissipation capacity is excessive, causing the engine to overcool. Therefore, a device to regulate the cooling intensity is needed, achieved by changing the air flow of the radiator or the cooling water circulation route, ensuring the engine operates within the most suitable range. The change in the cooling water circulation route is generally automatically controlled by the thermostat based on temperature changes. When the cooling water is below 70°C, the cooling water circulates in a small loop without passing through the radiator; when the cooling water temperature is above 80°C, it circulates in a large loop through the radiator. 2. A faulty thermostat causes drastic changes in the engine's economy and durability. Without a thermostat, the engine often operates in a low-temperature state, leading to poor thermal conditions, accelerated wear of components, and increased fuel consumption. Experiments show that when the engine operates at low temperatures of 40°C~50°C, its wear increases by 30~40 times, significantly shortening its service life. The reasons are: (1) Increased fuel consumption: Due to the low temperature, excessive heat dissipation from the cylinder walls reduces the temperature and pressure of the gases in the cylinder and thermal efficiency, leading to increased fuel consumption. (2) Increased wear of parts: Poor evaporation and atomization of fuel make it difficult to form a proper air-fuel mixture, causing the mixture to become too rich, incomplete combustion, and a large amount of fuel to be wasted without effective use. This results in reduced power, increased fuel consumption, and in severe cases, some fuel in the mixture condenses on the cylinder walls, washing away the oil film and flowing into the crankcase, diluting the oil and increasing part wear. (3) Reduced engine power: At low temperatures, the viscosity of the lubricating oil increases, and its fluidity deteriorates, increasing the resistance of moving parts such as the crankshaft and bearings, and the piston and cylinder walls, leading to reduced power and increased fuel consumption. (4) Corrosion effect: Water vapor produced by combustion condenses on the cylinder walls at low temperatures and combines with combustion byproducts to form strong corrosive agents, such as sulfuric acid, nitric acid, and carbonic acid, which strongly corrode parts like the cylinder walls, pistons, and piston rings.

What does motorcycle 125 mean?

Motorcycle 125 refers to motorcycles with an engine displacement of around 125CC. Major motorcycle manufacturers have launched various brand motorcycles with engines based on this displacement. The classification between motorcycle 125 and motorcycle 250 is determined by the actual displacement of the engine installed in the motorcycle. Displacement is a specialized term in hydraulic transmission, referring to the volume of fluid inhaled or discharged per stroke or cycle. Generally, a larger displacement means the engine releases more energy—converting the chemical energy of fuel into mechanical energy—in a given time, resulting in better performance. Motorcycles are two- or three-wheeled vehicles driven by gasoline engines, steered by handlebars for front-wheel turning. They are lightweight, flexible, and fast, widely used for patrol, passenger and cargo transport, and also as sports equipment.

Does a Car Wash Machine Damage the Car Paint?

Car wash machines do not damage the car paint. Currently, the fully automatic car wash machines available in the market use related programs to achieve automatic cleaning, waxing, drying, and wheel rim cleaning for vehicles. The brushes on the car wash machines are made of high-composite materials, which will not cause any harm to the car paint. Car paint has a certain thickness, and during regular maintenance, sometimes the car paint needs to be polished, removing a layer of the surface paint. Even if the vehicle gets scratched, as long as the primer is not damaged, the car paint can be relatively easily repaired. The car wash machine is mainly a machine that uses computer-controlled brushes and high-pressure water to automatically clean the car. It can be divided into automatic car wash machines, self-service car wash machines, and coin-operated car wash machines, mainly composed of a control system, circuits, air paths, water paths, and mechanical structures.

How Many Points Will Be Deducted for Missing License Plate Screws?

Missing license plate screws can result in a maximum deduction of 12 points. Motor vehicle license plates must be hung according to regulations, and special license plate fastening devices must be installed in designated positions. Not using the special fastening devices for license plates or using other fastening devices is considered illegal. The license plate fastening device mainly consists of bolts, nuts, a fastening base, and a fastening cover. The fastening cover is printed with Chinese characters representing the abbreviation of the province, autonomous region, or municipality directly under the central government, as well as letters representing the issuing authority code, which must match the abbreviations and codes on the license plate. Each motor vehicle license plate should be equipped with 8 new-style license plate fastening devices.

Can I directly apply for a B2 license now?

Now you can directly apply for a B2 license. First-time applicants for a driver's license can directly apply for the medium-sized bus driving category, provided they are between 21 and 50 years old. You can register for the exam at the vehicle management office or a driving school. To directly apply for a B2 driver's license, you must pass a physical examination with both eyes having a vision of 5.0, no color blindness, and sound limbs. A B2 license allows you to drive heavy-duty, medium-duty trucks or large, heavy, and medium-sized special-purpose vehicles. Heavy-duty and medium-duty trucks are mainly trucks, while large, heavy, and medium-sized special-purpose vehicles refer to vehicles equipped with special equipment or devices, such as sprinkler trucks, concrete mixer trucks, fire trucks, etc.

What does a Fujian license plate start with?

Fujian license plates start with the character 'Min', where Min A represents Fuzhou City, Min B represents Putian City, Min C represents Quanzhou City, Min D represents Xiamen City, Min E represents Zhangzhou City, Min F represents Longyan City, Min G represents Sanming City, Min H represents Nanping City, Min J represents Ningde City, and Min K represents the provincial system. License plates are composed of Chinese characters and English letters. The Chinese character is the abbreviation of the province, autonomous region, or municipality directly under the central government, while the English letter represents the code of the vehicle management office. The license plate number consists of 6 characters, which can be Arabic numerals or a combination of Arabic numerals and English letters. License plates, commonly known as car plates, are plates hung on the front and rear of a vehicle, typically made of aluminum, sheet iron, plastic, or paper, displaying the vehicle's registration number, registration region, or other relevant information.

Trending Ranking

How to Practice Steering for Beginners

What Causes Engine Trouble Codes?

What are the new energy vehicle brands?

What Causes Stiff and Jerky Gear Shifting in a Manual Transmission?

What Causes Bad Odor Inside the Car?

Is the JIACHI Battery a Rebranded VARTA?

Why does the car make a creaking sound when turning the steering wheel?

Can a motorcycle battery be fully charged by idling for 30 minutes?

Is it free to check for faults at a 4S shop?

Are the Helix Directions of the Worm and Worm Wheel the Same?

More Forum Discussions

How long do I have to wait to reschedule after failing the driving test (Subject 3)?

What is the range of 48v45a?

Does Engine Overheating Necessarily Require an Overhaul?

How to Obtain a Motor Tricycle License?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.