Why does the car still shake when slowly releasing the clutch?

[StMaya]

Possible reasons for shaking when slowly releasing the clutch are as follows: 1. Driven disc lining: Oil contamination or breakage of the driven disc lining, or uneven thickness of the driven disc causing shaking. 2. Clutch: Excessive spring tension of the clutch pressure plate causing clutch shudder. Stiffness of components such as the release sleeve and release fork shaft leading to clutch shudder. 3. Driving and driven discs: Bending of the driving or driven discs, or uneven height of the release levers causing clutch vibration. Additional information: 1. Clutch introduction: The clutch is installed between the engine and the transmission, serving as the assembly component in the vehicle's drivetrain that directly connects to the engine. Typically, the clutch is mounted together with the engine crankshaft's flywheel assembly, acting as the component that cuts off and transmits power between the engine and the vehicle's drivetrain. 2. Clutch function: Throughout the process from starting the car to normal driving, the driver can operate the clutch as needed to temporarily separate or gradually engage the engine and the drivetrain, cutting off or transmitting the power output from the engine to the drivetrain. Its role is to allow gradual engagement between the engine and the transmission, ensuring smooth vehicle starting; temporarily disconnecting the engine from the transmission to facilitate gear shifting and reduce shifting impact; and providing separation during emergency braking to prevent overload of the transmission and other drivetrain components, thus offering certain protective functions.

[FrankLynn]

Having driven for decades, I've encountered many instances of clutch shudder. The main reason for shuddering even when slowly releasing the clutch is likely uneven wear of the clutch disc. As the disc ages, its surface becomes uneven, causing inconsistent friction and resulting in jerky movements even with gradual release. Another common issue lies with the clutch release bearing or pressure plate - weakened internal springs can lead to unstable power transfer during starts. Engine instability at low RPMs can also contribute, such as from excessive carbon buildup or clogged fuel injectors transmitting vibrations at idle. Driving habits matter too - improper coordination between throttle and clutch engagement (releasing clutch too slowly without sufficient throttle) can cause shuddering under heavy load. I recommend prompt inspection of the clutch system. Severely worn components should be replaced to prevent accelerated damage to other parts and ensure driving safety. Regular maintenance should include carbon deposit cleaning and checking clutch hydraulic fluid levels.

[BentleyRose]

As a car mechanic, I deal with clutch failures every day. If the clutch still shakes when released slowly, it's mostly due to severe wear of the friction plates or oil contamination on the surface. When the plates are thin and uneven, they will slip and tremble no matter how slowly you release them. Deformed pressure springs or a stuck release bearing can also cause this, as internal components don't fully return to position. Additionally, an uneven flywheel or overheated and deformed pressure plate can lead to unsteady power transfer during startup. Improper coordination between the throttle and clutch is another factor, a common mistake among beginners who fail to synchronize them well. It's recommended to have a professional shop check the clutch clearance; if wear exceeds the standard, new parts should be replaced. Regular maintenance is essential to avoid prolonged clutch slippage and reduce additional wear. Ignoring clutch problems will only make them worse, affecting the transmission and overall lifespan.

[McDylan]

I just learned to drive not long ago, and I always feel annoyed by the shaking when slowly releasing the clutch. The instructor said to slowly release the clutch while coordinating with the throttle, but sometimes it still shakes, causing the car to jerk and tremble. I asked a car-savvy friend, who said it might be because my clutch disc is old and not smooth, or I'm not giving enough throttle, so the engine lacks power to pull smoothly. It could also be a problem with the car itself, like my old car with an aging clutch system, which is quite troublesome to inspect. He suggested trying to press the throttle a bit more when starting to ensure stable RPM and see if it helps. If not, I should take it to the 4S shop for a check-up to avoid bigger expenses later. This kind of shaking makes driving uneasy, especially in traffic jams.

[LeLeilani]

As a car enthusiast, I love studying various mechanical principles. There are many causes of clutch shudder, such as uneven wear of the friction material in the clutch disc, resulting in intermittent power transmission during startup, making it uncontrollable even with gradual release. Deformation of the flywheel or pressure plate can amplify this vibration, and engine shudder may also contribute, such as misfiring due to aged spark plugs. In terms of driving, improper synchronization between the throttle and clutch can lead to excessive load. To address this, first measure the clutch depth; if the disc wear exceeds 3mm, it needs replacement. When installing new discs, opt for high-quality branded parts to avoid counterfeit products. Regularly use computer diagnostics to check for engine issues, adjust idle speed, and ensure smooth throttle-clutch coordination. Safety comes first—if the shudder is severe, stop and inspect immediately.

[LaBrooke]

I believe clutch juddering not only affects comfort but also jeopardizes driving safety. If the clutch still shakes when released slowly, it usually indicates severe clutch disc slippage or deformation, with an uneven disc surface that makes precise torque control impossible even with gradual release. More alarmingly, unstable vehicle body movement during starts or hill climbs may lead to loss of control, especially on slippery surfaces. Causes include component aging, such as loose pressure springs or faulty release mechanisms, with excessively low engine idle speed also contributing to vibrations. Immediate inspection of the clutch system is recommended—replace heavily worn parts without hesitation to avoid cost-cutting risks. For daily driving, emphasize throttle-clutch coordination: apply steady throttle before releasing the clutch to minimize juddering. Prioritize regular maintenance as preventive care.