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What relay is the fuel pump?

1 Answers
LaCooper
07/30/25 6:50am
The fuel pump is not a relay; it is a fuel pump. The fuel pump is a professional term in the automotive parts industry and is one of the basic components of the fuel injection system in electronically controlled fuel-injected vehicles, located inside the vehicle's fuel tank. The fuel pump operates during startup and while the engine is running. If the engine stops but the ignition switch remains in the 'on' position, the HFMSFI control module cuts off the power supply to the fuel pump to prevent accidental ignition. The function of the fuel pump is to draw fuel from the fuel tank, pressurize it, and then deliver it to the fuel supply line, working in conjunction with the fuel pressure regulator to establish a certain fuel pressure. A relay, also known as an electrical relay, is an electronic control device that has both a control system and a controlled system. It is commonly used in automatic control circuits and essentially acts as an 'automatic switch' that uses a smaller current to control a larger current.
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What is the reason for the wrench icon appearing on the dashboard?

The reason for the wrench icon appearing on the dashboard is to remind the owner that the vehicle needs maintenance. The maintenance includes: 1. Changing the engine oil and oil filter, cleaning the air filter, and checking whether the generator belt and wiper blades are damaged; 2. Checking whether the levels of various fluids are normal; 3. Checking whether the tire pressure is normal and whether there is any uneven wear, bulging, or damage to the tires; 4. Inspecting the vehicle's chassis, including checking for scratches on the brake pads, brake discs, connecting rods, ball joints, and CV joints; 5. Checking whether all switches and lights in the vehicle are working properly. The precautions for vehicle maintenance are: 1. Make an appointment in advance; 2. Record any faults or questions encountered while driving and inform the staff during the maintenance registration.
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How many cylinders does the Audi A8 55 TFSI have?

Audi A8 55 TFSI has 6 cylinders. Here are detailed introductions about the Audi A8: 1. Overview: The Audi A8 is the most high-end luxury car in the Audi lineup, competing with the Mercedes-Benz S-Class and BMW 7 Series. The Audi A8 was the first to use an all-aluminum body, which is not only sturdy and durable but also reduces body weight, bringing more powerful performance to the car. 2. Others: The engine types are V6-FSI/V6-TFSI/V8-TFSI/W12-FSI. The standard seating capacity is 4. The top speed is 237km/h. The seat material is genuine leather. The acceleration time is 9.6-4.7 seconds (0-100km/h). The drive type is front-engine four-wheel drive or front-engine front-wheel drive. The body weight is 1930-2185 kilograms. The body material is an all-aluminum body.
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What are the differences between Audi A5 and Audi A7?

The differences between Audi A5 and Audi A7 mainly lie in three aspects. Below is a detailed introduction to these three differences: 1. Different vehicle dimensions: (1) Audi A5 4712mm×1854mm×1391mm. (2) Audi A7 Dynamic model: 4976mm×1908mm×1408mm; Sport model: 4976mm×1908mm×1414mm. 2. Different characteristics: (1) Audi A5 Features right-angle headlights and a wider air intake, giving it a stronger sporty feel. (2) Audi A7 The body design has a stronger sense of unity, with various elements echoing each other. 3. Different engine types: (1) Audi A5 2.0T L4 / 3.0T V6 engine. (2) Audi A7 3.0T V-type 6-cylinder turbocharged engine (2019 model).
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Can Vehicle Management Offices Issue License Plates on Saturdays and Sundays?

Vehicle Management Offices cannot issue license plates on Saturdays and Sundays. The working hours of Vehicle Management Offices are from 8:30 AM to 11:30 AM and from 1:30 PM to 5:00 PM, Monday to Friday, excluding statutory holidays, so it is not possible to get license plates for vehicles on Saturdays and Sundays. More details are as follows: 1. Except for statutory holidays, Vehicle Management Offices operate from Monday to Friday on other working days, and they are closed on weekends, observing the two-day weekend system. When going to get license plates from Monday to Friday, you must first pay for insurance, including compulsory traffic insurance, and only after the insurance takes effect can you proceed to get the license plates. 2. Go to the inspection station for the initial inspection, and you must bring the compulsory traffic insurance, ID card, vehicle qualification certificate, and a copy of the purchase invoice. Then you can go to the Vehicle Management Office to pay the vehicle surcharge. Submit the inspection station tax book, compulsory traffic insurance, and various certificates to the Vehicle Management Office.
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How to Deal with a Deformed Car Door?

Deformed car doors can be repaired through panel beating. A car door consists of the door body, door accessories, and interior trim panels. Its functions are to provide access for the driver and passengers, isolate external disturbances, and to some extent, protect occupants from side impacts. Reasons why a car door may not open include: 1. The remote key is out of battery; 2. The remote control malfunctions; 3. The door lock mechanism itself is faulty, or the door lock cable fails; 4. The door has been subjected to external force, causing deformation of the door hinges and lock pillars. Steps for soundproofing a car door are: 1. Remove the interior trim panel and clean the door surface with a cleaning agent; 2. Cut damping material to an appropriate size and paste it inside the door, then smooth it evenly with a glue scraper; 3. Cut sound-reflecting material to a suitable size and paste it on the inner panel, then smooth it evenly with a glue scraper; 4. Apply sealing material around the speakers and fixing plates; 5. Reinstall the interior trim parts from the inside out as they were originally.
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