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Where to Check Engine RPM?

1 Answers
VonJasper
07/29/25 11:29am
Tire speed ratings are represented by letters E, F, G, J, K, L, M, N, P, Q, S, T, U, H, V, W, Y, and Z, indicating maximum speeds of 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 240, 270, and 300 kilometers per hour respectively. Higher speed-rated tires generally have poorer wear resistance and shorter service life. This is because tires with higher speed ratings use softer materials, resulting in significantly reduced friction resistance during driving.
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What is the Chinese meaning of 'lim' on a car?

On a car, 'lim' stands for the speed limit function button. When pressed while the vehicle is stationary, it activates the speed limit function. If the throttle depth is below 95%, the vehicle speed will not exceed the set speed, and an alarm will sound when the set speed is reached. Pressing the throttle all the way down can exceed the set speed limit, but the speed limit function remains effective once the throttle is released. Pressing this button while driving sets the current speed as the speed limit. If a speed limit lower than the current speed is set while driving, the vehicle will coast until the speed drops below the set limit. The system allows exceeding the speed limit under certain special circumstances, and in such cases, the driver can exceed the speed limit as needed without triggering an audible warning. The method to set the speed limit function is to press the 'lim' button, then press the 'set' button to enter the speed limit adjustment mode. Use the 'res' button to increase the speed limit or the 'set' button to decrease it. The speed limit function helps prevent speeding. The prerequisite for setting it is that the vehicle is not in cruise control mode and is traveling at a speed of 30 km/h or higher.
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What type of engine oil is suitable for Toyota Yaris?

Toyota Yaris is most suitable for using 5W-30 semi-synthetic engine oil, which has the advantage of good lubrication effect and can effectively protect the engine. In the 5W-30 engine oil model, each symbol represents a different meaning. W stands for winter. The number before W is 5, the smaller the number, the better the fluidity of the engine oil at low temperatures, and the lower the applicable minimum temperature. 5W means it can be used at temperatures above -30 degrees Celsius. The number 30 after W refers to the viscosity of the engine oil at 100 degrees Celsius. The larger the number, the higher the viscosity of the engine oil, the stronger the ability to withstand high temperatures, and the better the high-temperature protection performance. Engine oil is divided into fully synthetic engine oil, semi-synthetic engine oil, and mineral engine oil. Fully synthetic engine oil should be replaced every 10,000 kilometers or 1 year; semi-synthetic engine oil should be replaced every 7,500 kilometers or 7-8 months; mineral engine oil should be replaced every 5,000 kilometers or 6 months.
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Which car brand does the Lynk & Co 01 belong to?

The Lynk & Co 01 is a vehicle jointly produced by Geely Auto and Volvo Cars, featuring an independent emblem and belonging to a standalone brand. Designed for young urban consumers, this SUV model is equipped with the Drive-E series VEP4 2.0T turbocharged engine and holds the distinction of being the world's first passenger car to incorporate Bosch's latest ESP 9.3 high-dynamic version. More details about the Lynk & Co 01 are as follows: 1. The Lynk & Co 01 utilizes European technology and design, manufactured globally as a premium automotive product. It is classified as a joint venture brand due to the collaboration agreement signed by Geely Auto, Volvo Cars, and Geely Holding Group, which led to the development of this new Lynk & Co brand. 2. Unlike traditional SUV models, the Lynk & Co 01 boasts a futuristic exterior design that aligns with the aesthetic preferences of young consumers, making it highly popular among this demographic upon its launch. 3. In terms of performance, it is powered by a 2.0T turbocharged engine delivering a maximum power output of 140kW and peak torque of 300Nm, achieving a 0-100km/h acceleration time of 7.7 seconds, which is considered outstanding within its vehicle class.
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How many kilometers can a car drive beyond the maintenance mileage?

Under normal circumstances, a car can drive up to 1,000 kilometers beyond the maintenance mileage without issues. However, frequently exceeding this limit will increase engine wear. Hazards of exceeding maintenance mileage: If engine oil exceeds the maintenance mileage, its fluidity deteriorates, viscosity properties change, and insufficient lubrication increases engine wear and fuel consumption. If coolant exceeds the mileage, the cooling system's heat dissipation performance declines. Deteriorated coolant can form scale in the system, reducing engine cooling efficiency. Excessive temperatures may lead to engine compartment fires. If brake fluid exceeds the maintenance mileage, its quality deteriorates, lowering the boiling point. Prolonged or frequent braking can cause the fluid to overheat and boil, creating air bubbles in the system that directly result in weak or failed braking. Precautions for car maintenance: Follow the recommended time or mileage intervals for maintenance and avoid significant delays. Regularly check tires for cracks, bulges, scratches, or abnormal wear. If any components show abnormalities, promptly send the vehicle for inspection. After each maintenance, reset the maintenance light and related parameters, and clean any spilled fluids to prevent damage to vehicle components.
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What is the safe speed limit on highways?

Highway safe speed should not exceed the maximum speed limit, with the maximum speed limit being 120 km/h and the minimum speed limit being 60 km/h. Most highways will indicate the driving speed for each lane, which should be followed as per the signage. When driving on a three-lane highway in the same direction, the leftmost lane has a speed limit of 110-120 km/h, the middle lane 90-110 km/h, and the rightmost lane 60-90 km/h. On a two-lane highway, the leftmost high-speed lane has a speed limit of 100-120 km/h, while the middle lane has a speed limit of 60-100 km/h. Under good weather conditions with clear visibility and smooth roads, vehicle speed can be maintained between 110-120 km/h. If there is traffic ahead, drivers should anticipate and reduce speed in time to ensure safe driving and avoid hazards. In rainy weather, when the road is slippery and visibility is poor, it is generally recommended to keep the speed below 100 km/h. In case of moderate or heavy rain, the speed should be reduced to 60-80 km/h. Additionally, front and rear fog lights or hazard warning lights should be turned on.
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What are the reasons for Iveco's lack of acceleration power?

Iveco vehicles may experience a lack of acceleration power due to the following reasons: carbon deposits in the engine, air entering the high-pressure fuel pump, or a damaged fuel pump. The solutions are as follows: Carbon deposits in the engine: After carbon deposits form, they can cause the vehicle to lack acceleration power and have low idle speed. In this case, simply cleaning the throttle body can resolve the issue. Air entering the high-pressure fuel pump: The high-pressure fuel pump is connected to the fuel injector. If the fuel tank has too little fuel, the high-pressure fuel pump may draw in air along with the gasoline from the tank, resulting in insufficient fuel being injected into the cylinders and preventing the vehicle from starting. To fix this, loosen the connecting nut between the fuel pump and the fuel injector to release the air. Damaged fuel pump: You can apply soap to the damaged part, separate the damaged pump diaphragm from the intact one, offset the damaged section, and reinstall it. If the crack is relatively long, cut a piece of film or tarpaulin into the shape of a circular diaphragm and place it between the diaphragms. The vehicle should only be driven at low speeds in this condition, and you should seek professional repair or replacement of the fuel pump as soon as possible.
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