What Causes Engine Shaking on the Highway?

1 Answers
DeTeagan
07/24/25 5:25pm
There are several reasons for engine shaking on the highway: 1. Dirty air filter: The air filter protects the engine from wear and tear. Simply replacing the air filter can resolve the issue. 2. Broken high-voltage wire: A broken high-voltage wire refers to a break in the wire core, which can affect ignition and cause engine shaking. 3. Low idle speed: The engine idle speed is preset in the car's computer. If the RPM drops below a certain range, the car's computer will automatically adjust it. 4. Abnormal water temperature: The engine operates within a normal temperature range. If the water temperature is too high, it can lead to premature ignition timing, changes in the air-fuel mixture, thinning of engine oil viscosity, and reduced lubrication performance. 5. Clogged fuel injector: The fuel injector in an electronic fuel injection vehicle is a critical component for fuel delivery and has a long lifespan, often reaching hundreds of thousands of kilometers. However, deposits in gasoline can clog the injector nozzles, causing uneven fuel delivery among injectors. This results in inconsistent cylinder operation and engine shaking.
Was this review help?
4
1
Share
More Forum Discussions

How to Reset the Oil Maintenance Light on Honda CRV?

Press and hold the "A" button without releasing it, while simultaneously stepping on the brake pedal. Do not start the engine, but ensure the vehicle's power is turned on. Continue holding the "A" button, and "..." will appear on the dashboard. The illuminated maintenance light indicates that the vehicle requires servicing. Release the brake pedal and the "A" button. The reset process is now complete; turn off the power. Although the mechanical lifespan of vehicles has become longer than before.
9
3
Share

What is the fuel consumption of the Levin Hybrid?

The comprehensive fuel consumption of the Levin Hybrid is 4.0-5.7L/100km. There are currently 13 models of the Levin Hybrid on sale, including the E-CVT JinQu (Entry) version, E-CVT HaoHua (Luxury) version, E-CVT KeJi (Tech) version, E-CVT LingXian (Leading) version, and E-CVT ZunXiang (Premium) version, all with a comprehensive fuel consumption of 4.0L/100km. The E-CVT YunDong (Sport) version has a comprehensive fuel consumption of 4.2L/100km. The above figures are NEDC comprehensive fuel consumption, which are measured under the NEDC test procedure. The actual fuel consumption is higher than this value, ranging from 4.8-5.3L/100km. The specific factors affecting vehicle fuel consumption are as follows: Vehicle weight: Larger and heavier vehicles consume more fuel. Generally, a compact family car with a 1.6L engine and a weight of about 1.2 tons has a fuel consumption of approximately 7.5 liters (calculated under full load conditions), while an SUV model weighing about 1.5 tons consumes around 8.5 liters. Different weights result in varying fuel consumption. Drag coefficient: Higher drag coefficients increase fuel consumption during driving. Vehicles with better aerodynamics have lower drag coefficients, leading to lower fuel consumption. Economical RPM: During driving, the engine has an optimal torque output point. Maintaining the vehicle speed within this torque output range significantly reduces fuel consumption. Generally, small-displacement vehicles achieve this at around 70 km/h, while larger-displacement vehicles reach it at about 100 km/h. Staying within this economical RPM range ensures minimal fuel consumption. Driving style: Aggressive driving behaviors such as sudden acceleration, frequent overtaking, and not easing off the throttle before stopping at red lights will increase fuel consumption.
4
0
Share

How to Deal with Lavida Sunroof Leakage?

Methods to handle Lavida sunroof leakage: 1. The rubber sealing strip around the sunroof edge may have aged or cracked, leading to poor sealing. Regular maintenance of the rubber sealing strip around the sunroof edge is essential. Purchase a rubber protectant spray and apply it to prevent rubber erosion; 2. Lack of lubricant on the sunroof tracks may cause squeaking noises when the sunroof is operated. Simply apply grease to the tracks to resolve this issue. The Lavida (LAVIDA) is the first A-segment car independently developed by Shanghai Volkswagen, with body dimensions of 4605mm in length, 1765mm in width, and 1460mm in height.
1
5
Share

What is the method for removing a car battery?

Car battery removal method is: 1. First open the battery compartment; 2. Then you will see a fixed bar fastened on top of the battery, use an 8-size wrench to loosen it; 3. After loosening, remove it. This is followed by the most critical part involving safety issues, so be sure to carefully follow each step before acting, otherwise sparks or battery burning may easily occur; 4. Next to the battery, you will see icons indicating positive and negative terminals, remove the negative terminal first; 5. Then repeat the previous step to remove the positive terminal, during the removal process try to avoid contact with metal parts.
1
4
Share

What does TCS mean on a car?

TCS on a car stands for Traction Control System, which ensures that the vehicle obtains optimal traction under various driving conditions. The control device of the Traction Control System is a computer that monitors the speed of all four wheels and the steering wheel's turning angle. When the car accelerates and the computer detects an excessive speed difference between the driving wheels and non-driving wheels, it immediately determines that the driving force is too high and sends a signal to reduce the engine's fuel supply, thereby decreasing the driving force and reducing the slip rate of the driving wheels. The Traction Control System is also known as the Anti-Slip Regulation (ASR) system. When braking on slippery surfaces, the wheels may skid, potentially causing a loss of directional control. Similarly, during startup or rapid acceleration, the driving wheels may also skid, especially on icy or slippery roads, leading to dangerous loss of control. The Traction Control System is specifically designed to address these issues.
5
1
Share

What are the causes of unstable idle speed and stalling in cars?

The causes of unstable idle speed and stalling in cars include: air intake system leaks, low fuel pressure, clogged air filters, fuel injector atomization leaks, improper idle speed adjustment, faulty spark plugs, and air flow meter malfunctions. Under normal circumstances, the intake air volume must be strictly controlled. If there is a leak in the intake pipe, the air flow sensor cannot accurately measure the actual intake air volume, causing the electronic control unit to inaccurately control the air intake and resulting in unstable idle speed. Fuel injector dripping, clogging, or circuit malfunctions can affect the quantity and quality of fuel injection, preventing it from following the electronic control unit's instructions. This leads to an excessively rich or lean air-fuel mixture, causing poor performance in individual cylinders and unstable idle speed.
1
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.