How Long Should You Wait Between Two Gravity Oil Changes?

What Causes Low Voltage in Car Batteries?

Low voltage in a car battery can be caused by a depleted battery, a faulty car battery, or when the charging rate is less than the discharge rate. Below are some relevant details about battery voltage: 1. How to determine if the battery is fully charged: The charging current will decrease. Additionally, the alternator contains a voltage regulator module that controls the output voltage, with an ideal precise voltage of 14.2V, with a tolerance of ±0.2V. The voltage is typically around 14V but can vary with engine speed. However, due to the alternator regulator, the maximum output voltage is 14V. 2. Battery maintenance methods: When the battery is not in use, it should be charged once a month to extend its lifespan. To prevent damage to the battery, regular inspections are necessary. Avoid instantaneous high-current discharge whenever possible.

19

2

Share

What Causes the Clicking Noise When Braking?

Braking with a clicking noise can be attributed to the following situations: 1. Sand in the brake disc. It is mostly caused by particles like sand or iron powder entering the brake system, which produces a sharp noise when braking. You can rinse it with a high-pressure water gun during car washing. If that doesn't work, you may need to disassemble and clean it. 2. Overly hard brake pads. The material of the brake pads is relatively hard. Generally, this situation can be ignored as it will improve after some running-in. 3. Severely worn brake pads. If the brake pads are completely worn out, simply replacing them will solve the issue. 4. The source of the brake noise. It could be due to surface aging of the brake pads or sharp edges. Simply grinding the surface and edges of the brake pads can resolve the problem.

11

5

Share

What is the reason for the car not engaging in reverse gear?

If the vehicle is equipped with an automatic transmission, the reason for the car not engaging in reverse gear could be a malfunction in the transmission's internal control module, among other issues. If it's a manual transmission, the cause might be faults in the clutch system's release bearing, friction disc, or pressure plate. Below is some relevant information about gear shifting: 1. Introduction: Gear shifting (changing gears) refers to the transmission, which is used to alter the torque and speed of the engine crankshaft to meet the varying requirements of traction and speed for the driving wheels under different driving conditions such as starting, accelerating, driving, and overcoming various road obstacles. 2. Function: It allows the car to drive at a very low and stable speed, which would be difficult to achieve solely by the internal combustion engine's minimum stable speed; the transmission's reverse gear enables the car to move backward; its neutral gear allows the engine to be separated from the drivetrain for extended periods during engine start-up, parking, and coasting.

14

5

Share

What is the Regeneration of the Particulate Filter in China VI Vehicles?

China VI vehicle particulate filter regeneration refers to the DPF, which stands for 'Diesel Particulate Filter,' also known as the Diesel Particulate Filter Regenerator, a device installed in vehicles. As the collected soot (carbon particles) in the Diesel Particulate Filter accumulates, it leads to increased exhaust backpressure, thereby affecting the engine's power. DPF regeneration involves burning off this collected soot through exhaust heating, a process known as DPF regeneration. With the exception of a very few models, almost all China VI-compliant vehicles are equipped with particulate filters. After the release of the China VI standard, automakers found it nearly impossible to meet the standard without altering design direction, R&D investment, or performance. Therefore, most models compliant with the China VI standard are equipped with particulate filters. However, there are a very few models that meet the China VI emission standards without a particulate filter, as follows: Toyota: Camry, RAV4, C-HR, etc.

4

2

Share

Why does the ABS pump keep making noise after the engine stalls?

The continuous noise is caused by wiring issues. Below is relevant information about ABS: 1. Explanation: The ABS electronic control unit is highly sensitive to overvoltage and static electricity. Careless handling can damage the chips in the control unit, causing the entire ABS system to fail. Therefore, do not plug or unplug the connectors on the control unit when the ignition is on. Before performing welding on the vehicle, wear an anti-static device (or wrap one end of a wire around your wrist and the other end around the vehicle body), disconnect the control unit's connector, and then proceed with welding. When charging the battery specially, either remove the battery from the vehicle or disconnect the battery cables before charging. 2. Usage precautions: During ABS braking, the rapid opening and closing actions of the brake wheel cylinders frequently compress high-pressure brake fluid, producing significant noise, and the brake pedal may vibrate and push back. Do not be troubled by this phenomenon while driving. In emergency situations, use ABS braking without hesitation—press the brake pedal firmly all the way down and do not release it.

4

0

Share

Why is the low pressure low and the high pressure normal in a car's air conditioning system?

Low pressure in the car's air conditioning system while high pressure remains normal is typically caused by a malfunction or damage to the air conditioning compressor. Below is relevant information about car air conditioning systems: 1. Air Conditioning Layout: Different types of air conditioning systems have varying layout methods. Currently, most passenger cars widely adopt integrated heating and cooling air conditioning systems. The layout involves assembling components such as the evaporator, heater radiator, centrifugal blower, and control mechanism together, collectively referred to as the air conditioning unit assembly. 2. Air Conditioning Components: Modern air conditioning systems consist of refrigeration systems, heating systems, ventilation and air purification devices, and control systems. A car's air conditioning system generally includes components such as the compressor, electronically controlled clutch, condenser, evaporator, expansion valve, receiver-drier, pipelines, condenser fan, vacuum solenoid valve, idle speed controller, and control system. The car's air conditioning system is divided into high-pressure and low-pressure pipelines. The high-pressure side includes the compressor output side, high-pressure pipelines, condenser, receiver-drier, and liquid pipelines; the low-pressure side includes the evaporator, accumulator, return pipelines, compressor input side, and compressor oil sump.

16

4

Share

How Long Should You Wait Between Two Gravity Oil Changes?

What Causes Low Voltage in Car Batteries?

What Causes the Clicking Noise When Braking?

What is the reason for the car not engaging in reverse gear?

What is the Regeneration of the Particulate Filter in China VI Vehicles?

Why does the ABS pump keep making noise after the engine stalls?

Why is the low pressure low and the high pressure normal in a car's air conditioning system?

How many kilometers should a new car drive before changing the gear oil?

What does 84H on a tire mean?

How to Determine if a Car is China 5 or China 6 Emission Standard?

What is the reason for the exhaust pipe not dripping water in summer?