What are the causes of automatic transmission gear switch failure symptoms?

What's the reason for occasional abnormal noise when stepping on the clutch?

Analysis of the reasons for occasional abnormal noise when stepping on the clutch: 1. Lightly stepping on the clutch pedal, there is an obvious "rustling" sound: It can be judged that the clutch release bearing is making noise. In this case, you can apply grease to the release bearing. If the noise persists after applying grease, it means the release bearing is damaged, such as if the bearing is stuck or has excessive axial clearance, and a new bearing should be replaced. If the inner ring of the bearing is worn by more than 0.3mm, causing the entire bearing to rotate idly on the release sleeve, both the bearing and the release sleeve should be replaced. 2. Stepping on the clutch pedal produces a "clanging" metal friction sound: Remove the flywheel housing for inspection. If you see signs of burning or sparks at the contact point between the clutch release bearing and the release lever, it indicates that the clutch release bearing is not rotating or is damaged, and the bearing should be replaced. 3. When the engine is idling, there is a "clattering" sound from the clutch, and slightly pressing the accelerator: If the noise does not change, it may be caused by a broken release lever screw, and the damaged part should be replaced. 4. When the engine is idling, there is a "thudding" impact sound from the clutch: If the noise weakens or disappears at medium speed or above, and also disappears when the clutch pedal is pressed again, it indicates that the rivets of the clutch friction plate are loose or the keyway of the driven plate hub is worn. In this case, you can remove the bottom cover of the flywheel housing (or clutch chamber), turn off the engine, engage the transmission, press the clutch pedal, and use a screwdriver to check the keyway of the driven plate for clearance. If the clearance is large, repair or replace the part. 5. If there is noise or intermittent knocking when the clutch pedal is fully released: The reason may be that there is no clearance between the clutch release bearing and the release lever. In this case, adjust the free travel of the clutch pedal, i.e., the clearance between the release bearing and the release lever. It may also be due to a weak, broken, elongated, or fallen return spring, causing the release bearing to slide freely and make noise when contacting the release lever. Repair or replace as needed.

18

4

Share

Is it necessary to display insurance decals on vehicles?

After the official launch of electronic auto insurance policies, insurance decals no longer need to be displayed, but currently, they still need to be affixed. Below is relevant information: 1. Compulsory Traffic Insurance (CTI): Starting from 2018, some regions have abolished the requirement for CTI decals, meaning that only the annual inspection decal is necessary. However, this policy is currently only being piloted in Beijing. Although the CTI decal has been eliminated, this only means replacing the physical decal with an electronic policy—CTI coverage is still mandatory. 2. Electronic Auto Insurance Policies: After the official implementation of electronic auto insurance policies, vehicle owners in Shenzhen who have purchased CTI will automatically have their insurance status verified by traffic police through license plate recognition during roadside checks, accident handling, vehicle registration, or when obtaining the periodic inspection certificate. If the insurance status is valid, they can directly benefit from the convenience provided by the traffic police.

8

1

Share

Implementation Time of China V Emission Standards?

20170701 marks the nationwide comprehensive implementation of China V emission standards, with the emission control level equivalent to the European Union's currently enforced Euro 5 standards. Compared to China IV standards, China V reduces nitrogen oxide (NOx) emissions by 25% for light-duty vehicles and 43% for heavy-duty vehicles. Below are details about China V: 1. China V Emission Standards: Officially named "National Fifth-Stage Motor Vehicle Pollutant Emission Standards," commonly referred to as "China V," these standards match the emission control requirements of Euro 5. The EU has implemented these standards since 2009, featuring stricter limits on nitrogen oxides, hydrocarbons, carbon monoxide, and particulate matter. Each upgrade from China I to China IV has reduced per-vehicle pollution by 30% to 50%. 2. Implementation Timeline: Starting January 1, 2017, China mandated nationwide supply of China V-compliant automotive gasoline and diesel, prohibiting domestic sales of lower-grade fuels. Notably, Beijing became the first city to adopt China V standards on February 1, 2013, with sales and registration of non-compliant light gasoline vehicles prohibited from March 1 onward.

3

Share

Do new cars have an environmental protection label?

New cars do have an environmental protection label, but as of January 1, 2017, the environmental protection department has ceased issuing the motor vehicle environmental protection inspection qualification label. Here are the relevant details: 1. No issuance of environmental protection labels: The environmental protection department no longer issues the motor vehicle environmental protection inspection qualification label. Vehicle safety inspection agencies will photograph the emission inspection qualification report and upload it to the traffic management department of the public security bureau through the motor vehicle safety technical inspection supervision system. Vehicles that fail the periodic emission inspection will not receive a safety technical inspection qualification certificate. The traffic management department will not issue a safety technical inspection qualification label for vehicles without a periodic emission inspection qualification report. 2. Vehicle environmental protection label: The vehicle environmental protection label is a classification label for motor vehicle emission standards issued by the state, divided into yellow and green categories. It is reviewed based on vehicle type and emission standards before being issued. The purpose is to meet the requirements for energy-saving and emission-reduction inspections and periodic environmental protection checks for vehicles.

13

5

Share

What Does Tank Turn Mode Mean?

Here is the relevant introduction to the tank turn mode: 1. Tank turn, as the name suggests, means turning in place like a tank. In reality, it involves locking the rear axle and then turning in place, which is extremely practical in areas restricted by terrain. 2. Principle: When this function is enabled for turning (at low speed), the inner tire of the turn is braked by the electronic system, while the outer tire rotates normally. You can imagine the vehicle as a compass, reducing the movement trajectory of the inner tire to minimize the turning radius. This function consists of a series of complex electronic programs and mechanical systems and is only suitable for use on unpaved roads. 3. Specific operation: First, shift to P or N gear, activate low-range four-wheel drive mode, then shift to D gear, turn on the creep mode, release the brake, and the vehicle will move on its own. Then, turn the steering wheel to a certain angle and press the tank turn button, controlling the speed with the speed button.

20

4

Share

What Does the Car Anti-Theft Indicator Light Look Like?

When locking the car, you may often notice a light flashing near the windshield or windows. This is the anti-theft indicator light, signaling that the vehicle's anti-theft system has been activated and is in a protective state. The functions of the car anti-theft indicator light are as follows: 1. Reminder function: After pressing the lock button on the smart key, the car's anti-theft system activates, and the anti-theft light flashes to remind the owner that the anti-theft system is engaged and the vehicle is in a secured state. 2. Battery aspect: If the car's engine anti-theft light flashes at a frequency of once every 1 to 2 seconds, it is normal. This indicates that the vehicle's engine has entered the anti-theft state, and the engine anti-theft system is functioning properly. This is a normal occurrence and does not require the owner to deactivate it, posing no issues to the battery. However, if the battery is dead, the vehicle's anti-theft system will lock the car, preventing the use of the remote control to deactivate the anti-theft system, open the doors, or start the engine. In such cases, the vehicle must be unlocked using the mechanical key, and the battery must be jump-started or replaced.

1

0

Share

What are the causes of automatic transmission gear switch failure symptoms?

What's the reason for occasional abnormal noise when stepping on the clutch?

Is it necessary to display insurance decals on vehicles?

Implementation Time of China V Emission Standards?

Do new cars have an environmental protection label?

What Does Tank Turn Mode Mean?

What Does the Car Anti-Theft Indicator Light Look Like?

Should You Shift to Neutral at Red Lights with an Automatic Transmission?

What Documents Are Required to Obtain a Driver's License in Beijing?

What is the speed limit for each lane in a three-lane same-direction highway?

Can a new car be driven on the road without a temporary license plate?