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What are the symptoms of a faulty fuel pump control module?

1 Answers
SanDonovan
07/29/25 11:39pm
When the fuel pump fails, the following symptoms may occur: weak acceleration with a jerking sensation during sudden acceleration; difficulty starting the engine; buzzing noises while driving; illumination of the engine warning light; and engine shaking or vibration. Causes of fuel pump failure include: poor fuel quality, where various impurities in the fuel tank are sucked into the fuel pump motor, causing damage; waiting until the fuel light comes on to refuel, which can lead to the fuel pump operating at a lower level without adequate cooling and lubrication; and failure to replace the fuel filter, which can cause severe blockage in the fuel supply system, making it difficult for the fuel pump to operate and leading to damage due to prolonged high-load conditions.
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What symbols represent China IV and China V?

China IV and China V are represented by Roman numeral symbols: IV-4, V-5. Here is some information about China IV and China V: 1. China IV and China V refer to the national vehicle emission standards in China. There are three major vehicle emission regulations worldwide: the United States, Europe, and Japan. Although the Chinese automotive market has developed rapidly, its emission regulations are relatively behind and started later. 2. Compared to the China IV standard, the China V standard reduces nitrogen oxide emissions by 25% for light-duty vehicles and 43% for heavy-duty vehicles. The main difference between China V and China IV is the stricter emission requirements for heavy-duty vehicles.
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How to Test the Quality of a Camshaft Position Sensor?

Methods for testing the quality of a camshaft position sensor: 1. If the camshaft sensor malfunctions, the car may exhibit symptoms such as difficulty starting, unstable idling, car shaking, poor acceleration, increased fuel consumption, persistent warning light illumination, and engine stalling when hot; 2. The camshaft sensor is a crucial component in the engine, classified as a precision part. Improper installation, aging components, or poor-quality parts can easily lead to engine damage; 3. The camshaft sensor is used to determine the ignition sequence. If it malfunctions or is damaged, it can cause difficulty in starting the car and make the engine hard to start.
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How to Shift Gears in a Tiptronic Transmission Car?

Tiptronic transmission cars can be operated under the following conditions: 1. When climbing a steep slope: You should use the manual mode of the tiptronic transmission and limit the gear to 1st to handle frequent hill starts. This operation also protects the transmission. 2. When accelerating to overtake: Before overtaking, if the transmission is in a high gear, the first thing to do is to downshift rather than pressing the accelerator further. By quickly downshifting using the manual mode of the transmission, the vehicle can utilize the high torque of a lower gear to accelerate instantly, completing the overtaking maneuver more quickly. The downshifting mentioned here does not necessarily mean dropping to a low gear within 3rd gear every time before overtaking, but rather lowering one gear from the current gear to maintain the engine speed at around 2500 rpm, which provides sufficient torque for acceleration.
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What is the normal temperature of a car radiator?

The normal temperature of a car radiator is around 90℃. The following introduces solutions for excessively high water temperature in cars: 1. Upon noticing high water temperature and pulling over, you should not immediately turn off the engine. There are various reasons for high water temperature, but usually only one cause per incident. Shutting down all other functions could keep the water temperature excessively high, damaging the engine. The correct approach is to idle the engine, open the hood, turn on the heater to dissipate heat quickly, and ensure the car is parked in a shaded area. 2. Next, check if the coolant is sufficient. Often, the issue is simply low coolant levels. It's crucial to note that when adding coolant, always use the same brand and model to avoid chemical reactions from different components that could render the antifreeze ineffective.
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What Are the Reasons for Brakes Not Returning to Position?

Possible reasons for brakes not returning to position include: 1. The brake return spring is broken or has lost its elasticity. Replacing the brake pedal return spring can resolve this issue. 2. The brake caliper piston is stuck, causing braking resistance. 3. The rear wheel bearing is fixed or installed incorrectly, or the rear wheel bearing is worn. 4. The brake fluid is too dirty, or the master cylinder's internal valve is stuck. It is recommended that car owners promptly visit a repair shop for inspection and maintenance to prevent affecting safe driving. More information about car brake pads is as follows: 1. Brake pads and brake discs (drums) have a service life. When worn to a certain extent, they must be replaced. Maintaining the good condition of brake pads is the most direct maintenance method for the braking system. 2. When replacing brake pads, due to prolonged inactivity in position, the edges of the rubber and guide sleeve may stick together. The travel distance of new brake pads differs significantly from that of old ones, causing the rubber sleeve to be cut or squeezed at the edges.
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What are the solutions when the warning light on the car comes on?

When the warning light on the car comes on, solutions can be applied based on different situations: 1. Engine self-check indicator light. The engine self-check indicator light is designed to alert the driver whether there is a fault in the engine. A self-check is performed every time before starting the vehicle. If the engine is normal, this light will go off after the self-check is completed. If this light remains on, it is to alert the driver that there is a fault in the engine, and immediate inspection and repair are necessary. 2. ABS system warning light. This indicator light performs a self-check before starting and will go off after a few seconds. If this light does not come on when starting the car, it indicates that there is already a problem with the car. Generally, it does not affect normal driving, but emergency braking may cause the risk of deviation or lock-up.
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