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What are the common faults in a car's chassis transmission system?

2 Answers

Shelley

08/28/25 8:06am

Common faults in a car's chassis transmission system include: 1. Clutch slippage: When the clutch pedal is fully released, the car struggles to start or climb hills with heavy loads, and the speed fails to increase during acceleration. In severe cases, smoke and a burning smell may emanate from the clutch. The root cause is insufficient friction torque, primarily due to reduced clutch clamping force or decreased friction coefficient on the contact surfaces. 2. Clutch noise: Abnormal sounds occur when engaging or disengaging the clutch, or during changes in engine speed or vehicle speed. This is mainly caused by improper adjustment, poor lubrication, abnormal friction, or collision of components. 3. Incomplete clutch disengagement: Difficulty in shifting gears even when the clutch pedal is fully depressed, or the car lurching forward or stalling without lifting the clutch pedal after shifting. This is primarily due to improper clutch adjustment, deformation of the pressure plate or driven plate, or air resistance in the clutch hydraulic system affecting complete disengagement.

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DePaisley

09/10/25 6:16am

As a veteran driver with over 20 years of experience, I've encountered various drivetrain failures. The most memorable was clutch slippage - when pressing the accelerator, the engine RPM would surge but the car wouldn't accelerate properly, accompanied by noticeable shaking. Manual transmission issues like difficult or rough gear shifting were also common, sometimes getting stuck with grinding noises. Driveshaft problems frequently occurred too, such as noticeable vibration at highway speeds caused by imbalance upon inspection. Constant differential whining often resulted from oil seal deterioration and leakage. Neglecting these issues creates safety hazards like stalling or losing control while driving. That's why I head straight to the repair shop at the first sign of trouble - penny-pinching can lead to disasters. Regular lubrication and inspections extend component lifespan, but safety always comes first.

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