What Causes Engine Idle Vibration in Cars?

1 Answers
DelMadison
07/29/25 5:26pm
Idle vibration can be attributed to the following four causes: 1. Severe carbon buildup inside the vehicle's engine, which makes starting difficult and leads to idle vibration. 2. Issues with the vehicle's ignition system. It is necessary to inspect the spark plugs and high-voltage wires of the vehicle. Abnormal operation of the ignition system can result in this condition, causing idle vibration or difficulty in starting. 3. Unstable fuel pressure in the vehicle's fuel system. If the fuel pump fails to supply fuel properly to the vehicle, it can lead to poor fuel atomization or failure to open the fuel injectors, resulting in cylinder misfire vibration or failure to start. 4. Faults caused by insufficient engine cylinder pressure. Due to prolonged use, the vehicle's engine may have exceeded its service life, making it unable to continue functioning properly, leading to intermittent idle vibration. In such cases, prompt repair at a service center is essential. Regular inspections and maintenance are crucial to prolong the vehicle's service life.
Was this review help?
20
4
Share
More Forum Discussions

Does driving in high temperatures damage the car?

Driving in high-temperature environments can cause significant damage to the car, as follows: 1. Damage to the engine: High temperatures can lead to carbon buildup, engine knocking, radiator boiling, and other issues, increasing engine wear and reducing its lifespan. 2. Damage to tires: High temperatures increase the risk of tire blowouts, posing a safety hazard. 3. Damage to the battery: High temperatures can cause unstable power supply, accelerate electrode oxidation, reduce battery capacity, and lead to leakage. 4. Damage to paint and interior: High temperatures can damage the paint, accelerate aging, and cause cracks, watermarks, or corrosion marks, so washing the car in high temperatures is not recommended. Additionally, the interior is prone to aging, leading to cracking and brittleness.
8
0
Share

What Causes the Automatic Transmission Vehicle to Jerk and Shake During Start-Up?

Here are the specific reasons why an automatic transmission vehicle jerks and shakes during start-up: 1. Faulty Spark Plugs: Failed spark plugs can cause one or more cylinders to misfire, resulting in uneven power output and severe vehicle shaking. 2. Poor Coordination Between Throttle and Clutch: If the clutch is released too quickly, the vehicle may exhibit jerking movements. 3. Fuel Pump Malfunction: When the fuel pump fails, fuel injection becomes uneven. Fluctuating fuel injection amounts lead to inconsistent power output. 4. Cold Start: Insufficient fuel combustion reduces the vehicle's power. During a cold start, when fuel and lubricant temperatures are low, more throttle input is required to meet power demands. Over time, the spark plug gap widens, decreasing ignition energy and causing poor fuel atomization, which results in vehicle shaking.
11
4
Share

What is the fuel consumption of the Great Wall Voleex V80?

The Great Wall Voleex V80 has a fuel consumption of 6.9L per 100 kilometers. The Great Wall Voleex V80 adopts the MiniMax space design concept, allowing for easy and unlimited expansion, presenting a super-large storage space. The last two rows of seats can be easily folded and transformed, offering over 10 different storage configurations. The last row of seats can be folded on one side to achieve any required space size. Below is an introduction to the Great Wall Voleex V80: 1. Configuration: The Great Wall V80 features a typical symmetrical design, with the instrument panel, center console, and gear controller aligned in a straight line. The craftsmanship is relatively refined, and the interior is predominantly black. The steering wheel is chrome-plated to avoid monotony and is multifunctional, with buttons for volume adjustment, program selection, and music mode located on the left side. The 1.5T models come standard with Bosch 8.1 ABS+EBD, power windows for all four doors, folding keys, remote central locking, airbags, and other features. 2. Powertrain: The newly launched Great Wall V80 is equipped with a self-developed GW4G15T turbocharged engine, paired with a 5-speed manual transmission. This powertrain is already used in the Voleex C50, delivering a maximum power of 133 horsepower and a maximum torque of 188N·m, equivalent to a 2.0L naturally aspirated engine, with a combined fuel consumption of 6.9L per 100 kilometers.
1
0
Share

In Subject Two, should you start the engine first or pull the handbrake first?

In Subject Two, you should start the engine first and then pull the handbrake. Below is some extended information related to Subject Two: 1. Exam Content: Also known as the small road test, it is part of the motor vehicle driver's license assessment and is the abbreviation for the field driving skills test subject. The test items for cars C1 and C2 include reversing into a parking space, parallel parking, stopping and starting on a slope, turning at a right angle, and driving on a curved path. 2. Exam Requirements: For Subject Two, if you fail the exam on the first attempt, you can retake it once. If you do not participate in the retake or fail the retake, the exam will be terminated, and the applicant must reschedule the exam after ten days. Within the validity period of the driving skills test permit, the number of scheduled exams for Subject Two and Subject Three road driving skills tests must not exceed five times. If you fail the fifth scheduled exam, the results of other subjects that have been passed will be invalidated.
12
1
Share

What are the tips for parallel parking for beginners?

Here are the detailed tips for parallel parking for beginners: 1. Adjust the distance between the car body and the parking line: Generally, 30cm is the optimal distance. You can observe from the driver's seat. When the parking line is at one-third of the engine cover, it's approximately 30cm. 2. Timing for steering: When the right rear wheel is parallel to the parking line, turn the steering wheel all the way to the right. When you see the inner corner of the parking space in the left rearview mirror, straighten the steering wheel. When the left rear wheel touches the parking line, turn the steering wheel all the way to the left. When both sides of the car body are parallel to the parking line in the rearview mirror, straighten the steering wheel.
4
5
Share

How to Eliminate Tire Pressure Monitoring Alerts?

Tire pressure monitoring malfunctions are typically caused by faulty wheel speed sensors, which trigger the brake system warning light. It is recommended to visit a repair shop for reset and elimination. Installing a tire pressure monitoring system is beneficial as it allows real-time monitoring of tire conditions, enabling early detection and timely resolution of issues. There are three commonly used methods for tire pressure monitoring: Direct Tire Pressure Monitoring: Direct tire pressure monitoring devices utilize pressure sensors installed in each tire to directly measure tire pressure. The pressure data is transmitted wirelessly from inside the tire to a central receiver module, which then displays the pressure readings for each tire. The system automatically alerts when tire pressure is too low or when there is a leak. Indirect Tire Pressure Monitoring: When the pressure in a tire decreases, the vehicle's weight causes the rolling radius of that wheel to become smaller, resulting in faster rotation compared to other wheels. By comparing the rotational speed differences between tires, the system monitors tire pressure. Indirect tire pressure warning systems essentially rely on calculating the rolling radius of tires to monitor pressure. Introduction to Tire Pressure Monitoring System (TPMS): This system combines the advantages of both the above methods. It equips direct sensors in two diagonally opposite tires and includes a four-wheel indirect system. Compared to using only a direct system, this hybrid approach reduces costs and overcomes the limitation of indirect systems in detecting simultaneous low pressure in multiple tires. However, it still cannot provide real-time pressure data for all four tires as effectively as a direct system.
5
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.