What are the common faults of the e39?

Which car brand features a dragonfly logo?

The dragonfly logo represents CH-Auto Technology's Qiantu Motors. Taking the Qiantu K50 as an example, its body dimensions are 4634mm in length, 2069mm in width, and 1253mm in height, with a wheelbase of 2650mm. In terms of power, the Qiantu K50 is equipped with two electric motors on the front and rear axles, delivering a combined maximum output of 408 horsepower and a peak torque of 650 Nm. For suspension, the Qiantu K50 uses double-wishbone independent suspension both at the front and rear. The double-wishbone suspension consists of upper and lower wishbones, with an additional link between them.

18

2

Share

What to Do If the Idle Speed Is High After Cleaning the Throttle Body?

If the idle speed is high after cleaning the throttle body, you can seek professional help to adjust the idle speed data using a diagnostic tool, or wait for the car's computer to self-adjust. After cleaning the throttle body, the accumulated impurities that were attached to it are removed, causing the original air intake volume to no longer match the current intake speed, leading to a higher idle speed. The time it takes for the car's computer to self-adjust varies. The throttle body determines the car's air intake volume and affects its acceleration. Properly cleaning the throttle body can help save fuel. During daily driving, if you notice unstable idle speed or insufficient power, consider cleaning the throttle body. Generally, the recommended cleaning interval is every 20,000 to 40,000 kilometers, but the exact timing depends on the driver's habits and usage.

16

1

Share

How often does the three-way catalytic converter need to be cleaned?

The three-way catalytic converter generally needs to be cleaned every 30,000 kilometers of driving. Situations that require cleaning the three-way catalytic converter include: 1. When you notice increased fuel consumption and reduced power in the vehicle; 2. Every time the vehicle undergoes cleaning of the fuel injectors, throttle valve, and intake tract maintenance; 3. Before the vehicle's annual inspection. The three-way catalytic converter is an important external purification device installed in the automobile exhaust system. It converts harmful gases such as carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. Since this catalytic converter can simultaneously convert the three main harmful substances in exhaust gases into harmless substances, it is called a three-way catalytic converter.

8

4

Share

How to effectively clean the three-way catalytic converter?

The cleaning methods for the three-way catalytic converter: 1. Use oxalic acid solution for cleaning. Remove the three-way catalytic converter, mix the oxalic acid solution with water in a certain proportion, and soak and clean it; 2. Use the drip method. Connect the device output connector to the vacuum tube, start the engine, open the flow control valve, and slowly drip the cleaning agent into the intake tract for cleaning. The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. It can convert harmful gases such as CO, HC, and NOx emitted by automobile exhaust into harmless carbon dioxide, water, and nitrogen through oxidation-reduction. The use of the three-way catalytic converter will cause carbon deposits in the throttle valve, fuel injector, etc. If not cleaned, the exhaust port will be blocked, resulting in increased exhaust pressure, engine weakness, reduced vehicle power, slow acceleration, and other symptoms.

17

1

Share

What is the cleaning method for a car radiator?

Car radiator cleaning method is: 1. Before cleaning, remove the bumper. Ensure all fixing screws are unscrewed during removal, then slowly detach it from both ends towards the center, being careful not to break any fixing clips; 2. After removing the bumper, the radiator's position will be visible. Adjust the water gun nozzle to a spray pattern and set the pressure to an appropriate level, then rinse the dirty radiator surface; 3. Once rinsing is complete, check if any radiator fins are bent or damaged. If found, use tweezers or bamboo sticks to straighten them. After all checks, reinstall the bumper in the reverse order of removal to complete the radiator cleaning process.

11

5

Share

Is it necessary to clean the car air conditioner?

It is necessary to clean the car air conditioner. After prolonged use of the car's air conditioning system, dust and dirt can accumulate at the air intake, air ducts, fan, and evaporator surfaces, leading to mold growth in the air ducts. Regular cleaning ensures the physical safety of the driver and passengers. Additionally, maintaining a clean car air conditioner also helps with fuel efficiency. The car air conditioner is frequently used during driving, especially during the hot summer months when the cooling function is used more often. During use, dust and bacteria in the air can pass through the air filter of the car air conditioner and enter its interior. If these stains and accumulated dust are not cleaned in time, they can affect the cooling and heat dissipation efficiency of the car air conditioner, thereby increasing the engine's fuel consumption.

12

3

Share

What are the common faults of the e39?

Which car brand features a dragonfly logo?

What to Do If the Idle Speed Is High After Cleaning the Throttle Body?

How often does the three-way catalytic converter need to be cleaned?

How to effectively clean the three-way catalytic converter?

What is the cleaning method for a car radiator?

Is it necessary to clean the car air conditioner?

Which country produces Audi cars?

Can a C1 license be upgraded to an A2 license now?

What is a GMC vehicle?

What Issues Should Be Noted When Replacing Tires?