What Are the Causes of Abnormal Noise from the Clutch Spring in a Car?
4 Answers
Detailed causes of abnormal noise from the clutch spring in a car are as follows: 1. During self-inspection for abnormal noise from the clutch spring, slightly depress the clutch pedal to bring the release bearing into contact with the release lever. If a 'rustling' sound is heard, it indicates noise from the release bearing. If the noise persists after lubrication, it suggests excessive wear, looseness, or damage to the bearing, which should be replaced. Depressing and releasing the clutch pedal, if intermittent collision sounds occur, indicates axial movement of the release bearing, and the release bearing return spring should be replaced. Repeatedly pressing the pedal, if noise occurs just as the clutch engages or disengages, suggests loose rivets or exposed rivet heads on the driven plate, which should be replaced. 2. Excessive clearance between the spline hole of the driven plate and its spline shaft, annealing, fatigue, or breakage of the driven plate damping spring, loose rivets or exposed rivet heads on the driven plate friction disc, and excessive wear clearance between the drive pins of a double-disc clutch and the intermediate pressure plate and pressure plate pin holes can also cause abnormal spring noise. 3. Lack of lubricant in the release bearing, leading to dry friction or bearing damage, no clearance between the release bearing and the inner end of the release lever, severe oil contamination or dust accumulation between the release bearing sleeve and the guide tube, or fatigue, breakage, or detachment of the release bearing return spring and pedal return spring, resulting in poor return of the release bearing, can also produce abnormal noise.
Abnormal noise from the clutch spring is mostly caused by fatigue fracture due to prolonged use or rust. I've handled many similar cases myself. The spring in the clutch is responsible for pressing the pressure plate and flywheel together. Once the spring becomes loose or breaks, it will produce a squeaking sound during engagement and disengagement, especially noticeable in the half-clutch state. Rust is also a common cause, where moisture or dust enters and corrodes the surface, leading to abnormal noise. Insufficient lubrication can also cause noise if the spring doesn't move smoothly. Improper alignment during installation can lead to uneven force distribution on the spring, causing deformation and noise over time. It's recommended to regularly inspect the clutch system, including the release bearing and pressure plate, as these components work together, and minor issues left unattended can damage the entire clutch. Replacing the spring promptly is the solution, but don't attempt to disassemble it yourself—seek a professional shop for convenience and safety.
I used to frequently encounter clutch spring noises when driving. After frequent half-clutch operations while climbing mountain roads, it started to squeak, which was actually caused by the spring overheating and deforming. Driving habits are crucial—for example, always keeping the clutch depressed or making sudden starts can cause the spring to compress and rebound frequently, leading to fatigue and breakage. Rust can also be a factor, especially after rain or car washes when humidity is high. Remember to check and lubricate it, as dry friction can cause noise. If ignored, the noise may turn into a clicking sound, the clutch pedal may feel stiff, and in severe cases, you might not be able to shift gears. When you hear unusual noises, pay attention to the difference in speed and road conditions; if the noise is minor on flat roads but loud on steep slopes, it indicates a problem. After parking, feel the clutch area to see if it's hot—if it's overheated, stop using it to prevent damage. Get it fixed quickly—a small expense now can prevent a major disaster later.
DIY troubleshooting for spring noise isn't difficult, and I've found it's mostly caused by lack of lubrication, rust, or wear on the springs. Step one: Start the car and depress the clutch to listen for the noise location; if there's a squeaking sound beneath the engine, it might be a spring issue. Step two: Remove the wheel or protective cover to visually inspect the springs for cracks or rust; if dirty, clean them with a brush and try spraying some WD-40 to reduce noise. However, if the springs are worn or broken, they'll need replacement. Matching springs can be bought online for a few dozen bucks, and with a wrench and jack, it's a half-hour job. But don't force it—damaging the pressure plate could be more costly. Also, take a look at the clutch disc and bearing, as they can affect each other. Regular cleaning and maintenance can prevent issues.
