What are the reasons for jerky shifting when changing gears in place with a CVT transmission?

What Causes Car Body Shaking When Accelerating?

Car body shaking when accelerating can be caused by: 1. Clogged fuel lines leading to poor fuel supply; 2. Air intake system leaks or blockages; 3. Damaged ignition coils or spark plugs; 4. Excessive carbon buildup in the throttle body; 5. Faulty fuel injectors; 6. Clogged fuel filters. The functions of the accelerator pedal are: 1. Controlling engine speed by adjusting the pedal depression amount; 2. Determining engine output power through carburetor control. The working principle of the accelerator is: When the pedal is pressed, it directly controls the throttle body. The throttle opening increases, allowing more air into the engine. The ECU then commands the fuel injection system to increase fuel delivery, causing the engine speed to rise and the vehicle to accelerate.

19

3

Share

How to Change Engine Oil for a Car?

Car engine oil replacement method is: 1. Lift the car, remove the protective plate, and place a container under the oil drain screw; 2. Unscrew the oil drain screw, use an air gun to blow at the oil filler port for two minutes, after draining, tighten the oil drain screw and wipe it with a tissue to check for oil leaks; 3. Reinstall the protective plate and lower the car, then add engine oil through the filler port. The functions of engine oil are: 1. To alleviate friction and high temperatures; 2. To reduce gas leakage and prevent external pollutants; 3. To prevent contact between water, air, acidic harmful gases, and parts; 4. To buffer the pressure rise in the engine cylinder port; 5. To flush away dirt generated on the working surfaces of parts.

3

2

Share

What Does a Yellow Exclamation Mark on a Car Dashboard Mean?

A yellow exclamation mark on the car dashboard indicates an abnormality or malfunction in the corresponding system. There are many indicator lights on the car dashboard that feature an exclamation mark, such as the tire pressure indicator, lighting fault indicator, steering system fault indicator, brake system fault light, transmission fault indicator, and wiper fault indicator. Below is a detailed explanation of the exclamation mark warning lights: General Fault: A triangle with an exclamation mark inside. If this symbol lights up, it indicates a fault in the car's general performance, components, or functions. Common issues include parking sensor failure, fuel cutoff system intervention or malfunction, external light failure, engine oil pressure sensor failure, etc. Solution: Visit a 4S shop for inspection, where professionals can identify the source of the fault. Automatic Transmission Fault: A yellow gear with an exclamation mark inside. This is the automatic transmission fault warning light, indicating a fault in the transmission or that the transmission fluid is below the normal range. Solution: Replace the transmission fluid promptly. Although it can be done independently, it is not recommended. Professionals should handle it based on the specific vehicle and the appropriate transmission fluid type. Brake System Fault: A circle with parentheses and an exclamation mark inside. This represents a brake system warning, indicating a fault in the brake system or low brake fluid level. Solution: First, check if the handbrake is released. If the warning light remains on after releasing the handbrake, drive slowly to a repair shop for professional inspection. Tire Pressure Anomaly: A horizontal line with parentheses and an exclamation mark below. This is the tire pressure monitoring warning light, which lights up when the tire pressure is too low. Solution: If you have a tire pressure gauge, you can check it yourself. Otherwise, visit a 4S shop to restore the tire pressure to the normal range. Lighting Fault: A yellow bulb with an exclamation mark. This is the lighting fault indicator, signaling a fault in one of the car's lights. Solution: Visit a 4S shop for inspection as soon as possible. Alternatively, you can check common bulbs such as turn signals, fog lights, and interior lights to identify the issue. Additionally, during daily vehicle use, the warning lights displayed on the dashboard are divided into two colors—yellow and red—indicating different levels of severity: Yellow indicates a fault in the corresponding system that is not very serious. Reduce speed and proceed to a repair shop to eliminate potential safety hazards. Red indicates a very serious problem in the corresponding system. In such cases, do not continue driving. Pull over safely and seek professional assistance immediately to prevent unforeseen risks to the vehicle and personal safety. Note: When starting the car, all warning lights will illuminate as the system performs an automatic check. They should turn off after the check is complete. If a light does not turn on when the ignition is switched on, remains lit, or lights up while driving, it indicates a fault in the related system. In such cases, seek professional help promptly to inspect and resolve potential safety hazards.

9

5

Share

Where is the air conditioning filter located in the Renault Koleos?

Renault Koleos air conditioning filter is located under the engine hood, inside the right front black box of the engine. The replacement method is: open the engine hood, there is a black box on the right front of the engine with 2 clips, open the clips to see the air conditioning filter inside, take out the old air conditioning filter and replace it with a new one, then reattach the 2 clips. Taking the 2019 Renault Koleos as an example, it is a compact SUV with body dimensions of: length 4672mm, width 1843mm, height 1685mm, wheelbase 2705mm, front track 1596mm, and rear track 1586mm.

14

1

Share

What are the main reasons for difficulty in starting a hot car engine?

The main reasons for difficulty in starting a hot car engine are: 1. The air-fuel mixture is too lean or too rich; 2. Fuel supply system or intake system malfunction; 3. Spark plug or ignition coil failure; 4. Severe carbon buildup in the engine; 5. Engine mount rubber aging or loosening; 6. Insufficient cylinder pressure. The solutions for difficulty in starting a hot car engine are: 1. Adjust the air-fuel mixture concentration; 2. Check the fuel supply system and intake system for faults; 3. Inspect whether the spark plugs or ignition coils are functioning properly and replace them if necessary; 4. Clean carbon deposits inside the engine; 5. Replace the engine mount rubber; 6. Use higher-quality fuel.

14

2

Share

What documents are required for the annual inspection of vehicles exempt from inspection for 6 years?

6-year inspection-exempt vehicles require the following documents for annual inspection: original and duplicate of the vehicle license, ID card of the vehicle owner, compulsory traffic insurance policy, and vehicle and vessel tax payment or tax exemption certificate. The inspection items include: 1. Checking whether the vehicle has been modified, altered, or reconstructed, and verifying if the information on the vehicle license, license plate, and vehicle records matches the actual condition of the vehicle; 2. Testing whether the vehicle's braking system, lights, exhaust, and other safety performances meet the requirements of relevant regulations. Vehicles cannot participate in the annual inspection under the following circumstances: 1. The vehicle condition does not match the information on the vehicle license or records; 2. The license plate or vehicle license is damaged, incomplete, illegible, or self-made; 3. The vehicle has been modified, altered, or technically transformed without going through the approval and modification procedures; 4. The vehicle has not been marked with the unit name and enlarged license plate characters as required.

2

0

Share

What are the reasons for jerky shifting when changing gears in place with a CVT transmission?

What Causes Car Body Shaking When Accelerating?

How to Change Engine Oil for a Car?

What Does a Yellow Exclamation Mark on a Car Dashboard Mean?

Where is the air conditioning filter located in the Renault Koleos?

What are the main reasons for difficulty in starting a hot car engine?

What documents are required for the annual inspection of vehicles exempt from inspection for 6 years?

What to Do When the Car's Interior Headliner Fabric Comes Off?

What is the difference between multi-point fuel injection and direct fuel injection?

What Does Carbon Deposit in Cars Mean?

What is the displacement of the Prado?