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What Are the Causes of Vehicle Idle Vibration?

1 Answers

VanKaleb

07/29/25 4:35pm

There are six main reasons why a car may shake at idle: 1. Intake system failure: Excessive carbon buildup in the throttle body or intake manifold, clogged air filter element, leaks in the intake piping or EGR valve, or a faulty intake pressure sensor. 2. Fuel system failure: Issues with fuel supply pressure or faulty fuel injectors. 3. Ignition system failure: Spark plugs failing to fire or producing weak sparks, faulty ignition module or coil, or issues with sensors or the ignition control circuit. 4. Electronic control system failure: Damaged internal circuits or poor connections in the electronic control system. 5. Mechanical structure failure: Damaged or worn piston rings, carbon buildup in piston ring grooves or cylinders, bent or deformed connecting rods, or incorrect timing belt installation. 6. Other causes: Systems like the air conditioning or automatic transmission increasing engine idle load, clogged catalytic converter, or imbalances in rotating components such as the crankshaft or flywheel.

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What is a motor vehicle and what types of vehicles are included?

Motor vehicles refer to wheeled vehicles powered or towed by a power device, used for transporting people or goods on roads, as well as for specialized engineering operations. Specifically, motor vehicles include: various automobiles, electric vehicles, battery-powered vehicles, motorcycles, tractors, and wheeled specialized machinery. Here is an introduction to the types of motor vehicles: 1. Special-purpose vehicles: These are vehicles equipped with specialized devices for specific purposes, including street sweepers, instrument vehicles, postal vehicles, and truck cranes. 2. Special vehicles: These are emergency vehicles designed for special purposes, including fire trucks, ambulances, engineering rescue vehicles, police vehicles, and accident investigation vehicles.

What are the reasons why the Mazda3's fog lights are not working?

There are several reasons why the Mazda3's fog lights may not be working: 1. The fuse is blown; 2. The fog light bulb is burned out; 3. The fog light wiring is damaged or short-circuited. The purpose of fog lights is to make the vehicle visible to other drivers in conditions of reduced visibility, such as fog or heavy rain, hence the light source of fog lights has strong penetration. The Mazda3 is a car produced by Changan Mazda, with dimensions of 4582mm in length, 1795mm in width, and 1458mm in height, a wheelbase of 2700mm, front-wheel drive, a front suspension using MacPherson struts, and a rear suspension using a torsion beam non-independent suspension.

Why Does the Steering Wheel Feel Loose and Shake on Rough Roads?

The reasons for a loose and shaking steering wheel on rough roads are as follows: 1. Excessive and frequent braking can cause the brake discs and brake pads to overheat, leading to deformation when cooled, which results in steering wheel shaking. This symptom can usually be resolved by replacing the brake discs and brake pads. 2. Worn-out or loose tie rod ends, detached rubber bushings at the joints, or irregular tire wear due to excessive use. It is recommended to take the vehicle to a professional repair shop for inspection and replacement of damaged parts. 3. Twisted or deformed drive shafts, loose or rusted universal joints due to lack of lubrication. Since these components are located under the vehicle body, they are often overlooked during maintenance. Therefore, during each maintenance session, ensure that the staff applies grease to all lubricatable parts.

How to Inspect a Used Car?

Methods for inspecting a used car: 1. Check if the left and right shoulders of the vehicle are at the same height. If they are not, it indicates that the vehicle's frame has been repaired and the shock absorbers have not been fixed; 2. Observe whether the gaps on both sides of the engine hood are even. If the difference is too large, it suggests a possible collision; 3. Inspect whether the gaps around the edges of the headlights are symmetrical; 4. Check if the rubber strips in the engine compartment are present or if the interior has not been deformed; 5. Examine whether the joints of the front and rear doors are even and symmetrical; 6. Observe if the glass sealing strips are neat and check for logos on the windows to ensure all logos are from the same brand.

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Which Car Insurances Can Be Skipped?

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