How to check if your gearbox or clutch is at fault
Monday 13th February 2023
How to check if your gearbox or clutch is at fault
In modern cars, the clutch is located between the engine and gearbox, making it difficult to differentiate whether certain issues affecting your vehicle relate to your gearbox or clutch. We have compiled 5 common problems that can affect both vital components, to help you stay ahead and safe on the road.
Squeaking noises
If you notice a squeaking noise when engaging and disengaging the clutch pedal, it may indicate a sign of clutch failure. If this noise occurs even as the engine is turned off, your clutch release mechanism may be at fault due to poor lubrication. A rattle or clicking sound can be a result of a loose clutch release fork or a faulty throwout bearing.
Difficulty accelerating
If your clutch pedal vibrates when you attempt to accelerate, it can be another sign of clutch failure. The vibration is a likely result of the following:
- The clutch disc struggling to grip the flywheel
- Damaged pressure plate
- Worn out flywheel
- Worn out clutch disc lining
Clutch pedal remaining on the floor
Your clutch should feel firm when it is pushed down, though there should still be some resistance to this pressure. If you find that you are unable to change gears and that your clutch pedal fully reaches the floor, you may be experiencing clutch issues. Depending on your vehicle, it may have either a cable system or a hydraulic system. If your vehicle uses a hydraulic clutch, the problem may be related to master cylinder failure. If your vehicle is operated using a cable, then there is a possibility that the cable has snapped over time.
Slipping gears
Slipping gears is when your vehicle reverts to a previous gear during a gear shift. This can result in struggling to control your vehicle and can pose a real danger for you and your vehicle whilst driving. A whining noise will also be present if slipping gears occur. This can be attributed to several possible causes:
- Faulty gearbox
- Lack of transmission fluid
- Damaged shift fork
- Misaligned engine
Difficulty shifting gears
A common warning sign of gearbox failure is difficulty when attempting to shift gears. This can be caused by:
- Damaged clutch linkage
- Excessive tough shifter lock spring
- Damaged main shaft splines
Should I replace my clutch or gearbox?
If you suspect clutch failure, such as unusual noises, vibrating, difficulty accelerating or if your clutch pedal can touch the floor, you need to book in for a clutch replacement. For problems affecting your gearbox, you will more than likely require a full replacement, though this may be dependent on certain factors such as the age and condition of your vehicle.
Whether it is your clutch or gearbox at fault, we recommend regularly servicing your vehicle and having it checked out by our expert technicians at your local Formula One Autocentre. For more information, contact our helpful team today.
