Some car problems are subtle and complex to diagnose, meaning they go unnoticed until it’s too late. Fortunately, this isn’t the case with clutch issues, which usually cause many noticeable symptoms, including a sticking clutch pedal.
This guide discusses what causes your clutch pedal to behave unusually, how to identify symptoms of clutch failure, and what you can do about it.
You are viewing: Why Is My Clutch Sticking
Contents:
How does a clutch pedal work?
Why is my clutch pedal stuck down?
What to do if your clutch pedal sticks to the floor
Is it safe to drive with a sticky clutch?
How does a clutch pedal work?
When you press the clutch pedal, it drives the release bearing against the diaphragm spring, which removes the clamping pressure from the pressure plate to disengage the engine from the transmission.
More simply, the clutch pedal gives you control over when to engage and disengage the engine, allowing you to change gears.
Read this guide for a more detailed explanation of how a clutch works.
Why is my clutch pedal stuck down?
Needless to say, when the clutch pedal isn’t returning after you push it, there’s something wrong with your car’s clutch system. The most obvious answer is that the cable has broken, but some other things may be at fault.
1. Loose or broken clutch cable
There is a steel braided cable connecting the clutch pedal to the clutch fork and bearing. It can become stretched over time, causing your pedal not to rise properly, and it can also snap, which will make the pedal stick to the floor.
Other signs of a faulty clutch cable
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The pedal is stiff
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Your gear changes aren’t smooth
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Difficulty changing gears
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Slipping gears
The average quote to repair a faulty clutch cable is around £223.81.
2. Low clutch fluid
Clutch fluid is the same as brake fluid and is kept in the master cylinder. It is transferred to the slave cylinder when you push the clutch pedal, where its pressure is used to disengage the clutch.
When your clutch fluid is low, it can make the pedal feel spongy or stick to the floor. This guide explains how to check and change your break/clutch fluid.
Other signs of low clutch fluid
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Grinding gears
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Vibrations when you change gears
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More resistance from the pedal
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Lurching when you shift gears
3. Faulty clutch release bearing
Clutch release bearings are small components – about the size of a doughnut – responsible for shutting off the driving force of the engine. They are also known as throw-out bearings.
Typically, you’ll notice your clutch pedal vibrating or becoming extremely stiff when the clutch release bearing wears out; once you push it to the floor, it may stick there.
Other signs of a faulty clutch release bearing
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Unusual noises when you press the clutch pedal
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Difficulty shifting gears
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Total clutch failure
4. Defective slave cylinder
The slave cylinder moves pressure plates to disengage the clutch, making it an integral part of any manual transmission system.
A malfunctioning or broken slave cylinder is one of the most likely reasons your brake pedal is sticking to the floor. However, this problem is rarely indicated by just one symptom – there should be several clear signs that something is wrong, as outlined below.
Other signs of a defective slave cylinder
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Oil dripping under the vehicle
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Low clutch fluid
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Difficulty changing gear
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Unusual behaviour from the clutch pedal
5. Defective master cylinder
The master cylinder converts the mechanical movement of the clutch pedal into hydraulic pressure. Without this pressure, changing gears is nearly impossible. You’ll probably notice that your clutch pedal is easier to press than usual and stays down after you’ve pushed it.
Other signs of a defective master cylinder
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Low or dark clutch fluid
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The fluid level goes higher when you press the clutch pedal and lower when you release
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Difficulty changing gear
6. Leaking hydraulics
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Without hydraulic pressure, clutches wouldn’t work. That’s why, when there’s a leak, it is accompanied by several symptoms that not only make it harder to drive but also more dangerous.
If your clutch pedal is behaving unusually and sticking to the floor, one of the first lines of enquiry should be to check the hydraulic lines and seals for cracks.
Other signs of a leaking hydraulics
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Low clutch fluid
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Pools of liquid under the car
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Difficulty changing gear
What to do if your clutch pedal sticks to the floor
Pull over somewhere safe and call for help from your breakdown provider if you have one. A mobile mechanic may be able to assess the problem at the roadside, but if the required repair is extensive, your vehicle will need to be towed to a garage.
This guide discusses breakdown cover and whether it’s worth it.
Is it safe to drive with a sticky clutch?
Do not continue driving if your clutch pedal is sticking to the floor or behaving unusually in any way; doing so is dangerous because you do not have complete control of the vehicle and won’t be able to change gears properly.
Get a mechanic to inspect and repair your car as soon as possible.
Fortunately, when you use WhoCanFixMyCar, clutch repairs don’t have to cost the earth. You can get quotes from our extensive network of garages and mobile mechanics to find the right repair at the right price.
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Source: https://t-tees.com
Category: WHY
