What Causes the Clunking Sound When Reversing in an Automatic Transmission Vehicle?

How many kilometers should antifreeze be replaced?

It is recommended to replace the coolant every 40,000 to 50,000 kilometers. Regular replacement of coolant is essential. Here is more information about coolant: 1. The full name of coolant is antifreeze coolant, but its main function is cooling rather than antifreezing. 2. Water-cooled engines rely on the continuous circulation of coolant within the engine for heat dissipation. When the engine is running, the water pump also operates, allowing the coolant to circulate within the engine and carry away excess heat. 3. There are two circulation paths for coolant within the engine: one is the major cycle, and the other is the minor cycle. When the engine has just started and the temperature is relatively low, the coolant will undergo the minor cycle, during which it does not pass through the radiator for heat dissipation. This helps the engine warm up quickly.

9

0

Share

What are the differences between Michelin Primacy and Energy?

Switch the square button below the dashboard brightness adjustment on the left side of the dashboard to the ecoon interface, then press and hold to turn off the eco mode. Here is more information about eco: 1. The eco mode is the economy mode indicator for automatic transmission vehicles, which refers to the comprehensive judgment and analysis of conditions that affect fuel consumption during driving, such as automatic transmission shifting, engine speed, vehicle speed, braking, and transmission oil temperature. 2. The ECU control unit calculates the amount of fuel to be provided to the engine, resulting in lower fuel consumption compared to normal driving mode. Simply put, it controls the engine speed with appropriate gear shifts to reduce unnecessary fuel consumption. 3. The eco mode mainly acts on the throttle. Whether the car's speed is too low or too high, as long as it exceeds the normal range, the eco system will function, reminding the driver to pay attention to the way they press the throttle to achieve fuel savings. For active eco modes, there is usually a dedicated control button that the driver can turn on when needed.

20

2

Share

Does a New Plug-in Hybrid Vehicle Need to Be Charged?

Under normal circumstances, the engine of a plug-in hybrid vehicle cannot directly charge the power battery, but it can charge the battery through certain energy recovery devices. Therefore, when the power battery is low on charge, it must be charged externally. Hence, plug-in hybrids do require charging. Below is more information about plug-in hybrid vehicles: 1. A plug-in hybrid vehicle is a new type of hybrid new energy vehicle, different from traditional gasoline-powered hybrids combined with pure electric drive. The driving principle and unit of plug-in hybrids are similar to those of electric vehicles, with the only difference being that they are equipped with an engine. 2. Plug-in hybrid vehicles fall between conventional hybrid vehicles and pure electric vehicles. For long trips, they primarily use the internal combustion engine mode, while for short trips, they use the pure electric mode. 3. Plug-in hybrid vehicles have two sets of power drive systems: one is the traditional internal combustion engine drive, which consumes fuel to obtain driving force, and the other is the electric drive, which consumes the power battery's charge to obtain power. When necessary, both systems can work together to drive the vehicle.

11

0

Share

Which tire does not rotate when the car turns right?

When a car turns right, all four wheels rotate. The right wheels have a smaller turning radius and slower speed compared to the left wheels. Only the spare tire on the car does not rotate. Precautions for using a spare tire: 1. Regularly check the air pressure of the spare tire. 2. Avoid placing the spare tire together with oil products to prevent corrosion. 3. It is best to install a non-full-size spare tire on a non-driving wheel and avoid driving long distances with it. Below is more information about spare tires: 1. A spare tire is a backup tire for a car, which can replace a flat or damaged tire to ensure safe driving. In terms of type, spare tires can be divided into full-size spare tires and non-full-size spare tires. 2. A full-size spare tire is the same as the original tire of the vehicle, while a non-full-size spare tire is smaller and narrower than the original tire. Due to lower manufacturing costs, non-full-size spare tires are generally only equipped on lower-priced vehicles. It is important to note that non-full-size spare tires are only for temporary use and should not be driven for long distances.

15

4

Share

How to Deal with Frozen Car Air Conditioning?

Normally, the evaporator does not freeze. When the evaporator coil freezes, it affects heat transfer, increases thermal resistance, and reduces cooling efficiency and airflow. The causes and solutions for a frozen car air conditioning evaporator coil are as follows: 1. Insufficient Refrigerant Split-type air conditioners may experience refrigerant leakage or seepage due to installation issues or prolonged use. A reduced amount of refrigerant in the system leads to low evaporation pressure, causing the evaporator to freeze, typically in the front section. The solution is to repair the leak and refill the refrigerant, which will resolve the issue. 2. Compressor Malfunction Over time, the compressor's efficiency may decrease, or the compressor's gas distribution system may fail, resulting in low pressure and freezing. The freezing also occurs in the front section of the evaporator. Adding some refrigerant can fix the issue in the former case. If the problem persists, the compressor must be replaced. 3. Temperature Sensor Failure In mechanical thermostats, the gas pressure in the temperature-sensing bulb changes with temperature, triggering the thermostat's contacts. If the contacts stick together or the spring lacks sufficient tension, the contacts may remain closed, causing the air conditioner to run continuously and freeze. Replacing the thermostat will resolve the issue.

4

0

Share

What is the procedure for changing car engine oil?

Here are the steps for changing engine oil: 1. Wait for the engine temperature to cool down, allowing the oil to drain back into the oil pan. 2. Use a wrench to loosen the oil drain plug, place an oil pan underneath to catch the old oil until it stops flowing. Then start the engine and let it run for 30 seconds to drain the oil from the main oil passages. 3. Use a specialized wrench to remove the oil filter; apply new oil to the oil seal of the new oil filter and hand-tighten it clockwise. 4. Add new oil through the oil filler cap on the engine valve cover, typically filling about three-quarters of the oil container. 5. Start the engine and let it run for 5 minutes, then check for any oil leaks around the drain plug and oil filter. If leaks are found, repairs should be made. 6. After stopping the engine, pull out the oil dipstick to check that the oil level is within the standard range.

5

0

Share

What Causes the Clunking Sound When Reversing in an Automatic Transmission Vehicle?

How many kilometers should antifreeze be replaced?

What are the differences between Michelin Primacy and Energy?

Does a New Plug-in Hybrid Vehicle Need to Be Charged?

Which tire does not rotate when the car turns right?

How to Deal with Frozen Car Air Conditioning?

What is the procedure for changing car engine oil?

What is the final action at the end of Subject 2?

What brand is alken tires?

How much engine oil does a BMW 5 Series 2.0T engine require?

Is It Illegal to Remove Rear Seats from a Five-Seat Sedan?