CV joint (constant velocity joint) is one of the key components of the transmission of a front-wheel drive car. Its main task is to transmit rotation from the gearbox to the wheels, ensuring their free movement even during turns. But what to do if a characteristic crunch appears when turning? And most importantly - the CV joint is crunching, can you continue driving? Let's figure it out in detail.

Why does the CV joint crunch

Most often, the crunch of the CV joint is heard during a sharp turn of the steering wheel (especially at full lock), when starting off, or during acceleration. This indicates wear of the outer joint. Less often, the noise is caused by the inner CV joint - its crunch can manifest even on a straight road.

Causes of CV joint crunch:

  • Wear of the balls and grooves inside the joint;
  • Tear or damage to the boot;
  • Moisture, dust, dirt getting inside;
  • Lack or leakage of grease;
  • Long-term operation without maintenance.
When the inner CV joint crunches, can you drive? The answer depends on the degree of damage. But in any case - this is already a signal to act.

The CV joint crunches - can you continue driving?

Short answer: you can, but not for long.

If the CV joint has started to crunch, it means its working surface is already damaged, and the resource is rapidly running out. Crunching when turning is not just a sound. It is a signal: the unit is wearing out, and at any moment it can fail completely.

Possible consequences:

  • CV joint failure on the road - the car will lose drive to one wheel;
  • Jamming of the joint, which can cause a sharp loss of control;
  • Damage to other elements - hub, suspension, grenade;
  • Jerks and vibrations while driving;
  • Complete stop of the car at an inopportune moment.
So, if you notice that the CV joint crunches when turning, can you drive - the question is not only about convenience, but also about safety.

What to do if the CV joint crunches

1. Do not postpone diagnostics

Even if the crunch is not strong yet - check the condition of the boots and the grease level.

2. Replace the boot (if damaged)

Sometimes the problem lies only in a torn boot. If replaced in time, you can extend the service life of the CV joint.

3. Assess the degree of wear

If the joint crunches on every turn, especially during acceleration - it requires replacement.

4. When replacing - replace in pairs

If one CV joint has failed, the second is most likely also on the verge. It is better to replace both at once.

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The inner CV joint crunches - can you drive?

The inner CV joint crunches less often, and it is harder to recognize. Signs:
  • Vibrations at speed;
  • Knocking when starting off;
  • Rattling on a straight course.
Can you drive? For a very short time - yes. But remember, the inner CV joint carries an important load, and its failure can be even more critical.

When you can no longer drive

There are situations when operating the car is strictly prohibited:
  • The crunch has become louder, especially with every movement;
  • Impacts appeared during acceleration;
  • The car began to jerk or pull to the side;
  • The boot is completely torn and grease is visible;
  • A metallic ringing is heard.
If this is your case - stop and call a tow truck. Further driving can end in a serious accident.

How much can you drive if the CV joint crunches?

If the CV joint crunches, can you drive 100-200 km? Possibly, but:
  • It all depends on the degree of wear;
  • If the crunch is light and does not intensify - there is a chance;
  • If the crunch is loud and constant - you risk getting stuck on the road.
It is better not to delay and not to experiment with long-distance trips. After all, repair "on the highway" will be much more expensive than replacement on the spot.
A crunching CV joint is unsafe and unpredictable. You can drive another 50 km, or you may not make it to the next intersection. If the CV joint crunches when turning - can you drive? Theoretically - yes, but you shouldn't. The best solution is to replace the faulty joint as soon as possible. Do not risk your car, yourself, and other road users.