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What causes the sudden inability to accelerate in a JMC Shunda while driving?

1 Answers
MacCayden
07/29/25 11:27am
JMC Shunda's sudden inability to accelerate while driving is caused by issues such as a clogged diesel filter, blocked exhaust pipe, or damaged throttle wiring. Below are the detailed explanations: Clogged Diesel Filter: If the diesel filter element is dirty and not replaced or cleaned regularly, it can become clogged with impurities from the fuel, blocking the fuel line and cutting off fuel supply. Blocked Exhaust Pipe: A blocked exhaust pipe can result in poor acceleration and difficulty increasing engine RPM and vehicle speed. Damaged Throttle Wiring: If the throttle wiring is damaged, the vehicle loses throttle response and cannot operate normally.
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What Could Be the Reason When a Car Fails to Start Despite Everything Appearing Normal?

There are two scenarios when a car fails to start: Battery Depletion: When the car battery is depleted, the vehicle may fail to start. Several factors can lead to battery depletion, such as insufficient battery water, battery malfunction, or prolonged use of the air conditioning. If the car doesn't start, the first step is to check whether the battery is the issue and identify the specific problem before sending it to a 4S shop for repair. Extremely Low Temperatures: During cold winter weather, cars often have difficulty starting. This is because, in low-temperature environments, the viscosity and rotation speed of the car's engine oil decrease, leading to reduced ignition energy from the battery and decreased molecular activity. As a result, flammable gases cannot form, making it difficult for the car to start.
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What Causes the Engine Yellow Light to Illuminate on a Car?

There are two scenarios when the engine yellow light on the car dashboard illuminates, as described below: The first scenario: When the car's power is turned on, the vehicle undergoes a self-check. At this time, not only the engine yellow light but also other warning lights will illuminate simultaneously and then turn off together. This is a normal phenomenon. The second scenario: After the car is started, the engine fault yellow light remains illuminated. This is the ECU alerting that there is a fault in the engine, which is an abnormal phenomenon. Additional information: If the engine fault light comes on, first check the coolant temperature gauge and the oil pressure warning light. If the coolant temperature gauge and oil pressure warning light are not activated, the car can still be driven, but it is essential to control the speed carefully and promptly drive to a service station for inspection.
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What Causes a Car Compressor to Fail?

Introduction to the causes of car compressor failure: The refrigerant inside the compressor is either too much or too little. The air conditioning compressor operates for a long time under high-temperature conditions. The compressor's power is insufficient. Particulate matter has entered the compressor. Regular maintenance is required for the optimal performance of the vehicle's compressor. Below is an introduction to air conditioning maintenance: Comprehensive air conditioning inspection: When using the air conditioning for the first time in summer, check the air conditioning system, such as inspecting the refrigerant and whether the air filter is too dirty through the reservoir, and whether there are foreign objects in the radiator. Pay attention to air conditioning cleaning: The air filter should be replaced regularly; otherwise, the air conditioning will produce a musty smell. Additionally, the condenser should be cleaned periodically, and the radiator should be removed for thorough cleaning.
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What are the signs of severe engine oil shortage in a car?

When the engine lacks oil, the oil warning light will first illuminate. If the situation is severe, the vehicle may experience shaking. You should immediately pull over and turn off the engine, otherwise there is a risk of engine failure, and professional assistance should be sought. Engine oil performs multiple functions within the engine, including lubrication, cleaning, sealing, and cooling. When the engine is low on oil, the following symptoms may occur: Poor lubrication of the engine's friction surfaces: This can lead to abnormal shaking, reduced power, and in severe cases, may cause engine "bearing seizure." Engine "bearing seizure" refers to the burning and erosion of the crankshaft bearings and bearing bushings due to insufficient lubrication, which manifests as abnormal engine shaking until the engine stalls. After stalling, the engine will not be able to restart. Malfunction of the engine's variable timing solenoid valve: This can result in the inability to precisely control the engine's intake and exhaust valves, leading to operational abnormalities, reduced power, and increased fuel consumption, among other symptoms.
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What is the professional name for the car's steering knuckle?

The professional name for the steering knuckle is 'Steering Knuckle'. Below is its related introduction: Function: The steering knuckle is one of the important components in the vehicle's steering system, enabling stable vehicle movement and transmitting the driver's steering actions. The steering knuckle also needs to bear the front weight of the vehicle and withstand varying impacts from the road surface during driving. Therefore, designers generally design the steering knuckle with high strength. Installation position: The steering knuckle, also known as the steering knuckle, is installed on the steering knuckle and is generally only present on the front wheels. The steering knuckle is the hinge for wheel steering and is usually fork-shaped. The upper and lower forks have two coaxial holes for installing the kingpin, and the steering knuckle neck is used to mount the wheel. When the steering knuckle has issues, the vehicle may experience poor direction return, abnormal front wheel wear, easy damage to the wheel bearings, and abnormal body noises.
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Which region does the Gui license plate belong to?

Gui license plate belongs to Guizhou Province. The license plate codes for different regions in Guizhou Province are as follows: Gui A for Guiyang, Gui B for Liupanshui, Gui C for Zunyi, Gui D for Tongren, Gui E for Qianxinan Buyi and Miao Autonomous Prefecture, Gui F for Bijie, Gui G for Anshun, Gui H for Qiandongnan Miao and Dong Autonomous Prefecture, Gui J for Qiannan Buyi and Miao Autonomous Prefecture. License plate refers to the vehicle registration plate, which is a plate made of aluminum, iron, plastic, or paper, displaying the vehicle's registration number, registration region, or other relevant information, and is hung at the front and rear of the vehicle. The first character on the license plate is a Chinese character representing the abbreviation of the province where the vehicle is registered, the second is an English letter representing the prefecture-level city code where the vehicle is located, followed by a five-digit serial number.
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