You pull out of a junction, swing the wheel round, and there it is: a rhythmic click-click-click that gets faster the harder you turn. It is one of the most common noises we hear from drivers across St Helens, and nine times out of ten the culprit is a worn outer CV joint. Here is what that clicking noise when turning is really telling you, whether you are safe to keep driving, and how we track it down and put it right.
The 30-second version
- A rhythmic clicking that speeds up with road speed and is worst on full lock almost always means a worn outer CV (constant velocity) joint.
- The usual cause is a split CV boot letting the grease escape and road grit get in, which chews the joint from the inside.
- Other possibilities include worn drop links or top mounts, a failing wheel bearing, or low power steering fluid.
- A clicking CV joint will not strand you tomorrow, but it will get worse, and it is an MOT failure, so it should not be ignored.
- A quick diagnostic check pins down the exact cause; caught early, a split boot can sometimes be re-booted, but a worn joint needs replacing.
What the clicking is actually telling you
Your front wheels have to do two jobs at once: turn for steering and spin to drive the car forward. The clever part that lets them do both is the constant velocity joint, or CV joint, on the end of each driveshaft. The outer CV joint sits right at the wheel, and it uses a set of hardened steel balls running in machined grooves so power keeps flowing smoothly even when the wheel is cranked over on full lock.
That joint is packed with special grease and sealed inside a flexible rubber concertina called the CV boot. As long as the boot stays intact, the joint stays clean, lubricated and quiet, often for well over a hundred thousand miles. The trouble starts when the boot splits. Once it does, the grease flings out and road water and grit get flung in. The grit acts like grinding paste, wearing away the balls and grooves until the joint develops play. When you then turn and load that joint up, the worn parts knock against each other, and you hear it as that unmistakable clicking.
The tell-tale is very specific. A worn outer CV joint clicks rhythmically, it speeds up as the wheel spins faster, and it is at its worst on full lock and tight turns, for example a slow, hard turn out of a car park space or a mini-roundabout. If you can hear it clicking louder when you turn one particular direction, that is usually the side that has worn.
The main suspects, ranked
The CV joint is the front-runner, but it is not the only thing that can make a noise as you turn. Suspension joints, wheel bearings and even the power steering can all chime in with their own sounds, and telling them apart is exactly what a proper diagnostic check is for. Here is roughly how the causes stack up in our experience on the ramps in St Helens.
Notice that the noises differ. A CV joint clicks. A worn wheel bearing tends to drone or rumble, and that rumble often changes pitch or loudness as you turn and shift the car's weight onto or off the bad bearing. Worn drop links and top mounts usually knock or clonk, especially over bumps and while turning. Low power steering fluid produces a whine or groan as you approach full lock, not a click. Getting the diagnosis right the first time saves you paying to replace the wrong part.
Is it safe to keep driving?
This is the question we get asked most, and the honest answer is: for a little while, cautiously, but do not leave it. A CV joint that has just started clicking is not going to fail the moment you pull away. Realistically you can usually keep driving to work and to the garage for a short period. What you should not do is ignore it for months and hope it settles, because it never does. It only gets worse.
The reason to act is that a badly worn CV joint can eventually seize or come apart. If an outer joint fails completely the wheel loses drive, and in a bad case the shaft can separate, which is not something you want happening as you pull out across traffic on a busy St Helens junction. There is also the MOT to think about: a split CV boot or a worn CV joint is a straightforward MOT failure, so a car that clicks on turns will not sail through its test.
Our advice is simple. If you are hearing a light click, book it in soon rather than leaving it. If the clicking has become a loud, harsh knock, or you feel a vibration through the car, treat that as more urgent and get it looked at before any long journeys.
How the noise changes with the fault
The exact character of the noise is a big clue, and it is worth learning to describe it because it helps us zero in quickly. Use the tabs below to match what you are hearing.
A crisp, rhythmic click-click-click that quickens with speed and is loudest on full lock is the signature of a worn outer CV joint. Many drivers first notice it doing a slow, tight turn, such as manoeuvring in a car park or swinging round a mini-roundabout. If it is louder turning left, the right-hand joint is usually the worn one, and vice versa, because the outer joint on the outside of the turn takes the most load.
A duller clonk or knock, especially felt over bumps as well as on turns, points more towards worn suspension components: drop links, top strut mounts, or a tired track rod end. These make the steering feel a little vague or notchy too. It is a different noise from a CV click, and it needs the suspension inspecting on a ramp rather than a driveshaft.
A whine, groan or moan that rises as you approach full lock is typically the power steering, often low or old fluid, or a struggling pump. It is not a click, and it does not usually change with road speed the way a CV joint does. Checking and topping the fluid, and inspecting for leaks, is the starting point here.
Try this test yourself: find a quiet, empty car park, put the car on full lock, and drive slowly in a tight circle both ways. If a clear, rhythmic clicking appears and gets louder the tighter and faster you go, that is a classic worn CV joint. Note which way round is worst, then let us know when you book in, as it helps us confirm the diagnosis quickly.
How we diagnose it at Fastlane Autocare in St Helens
Diagnosing a clicking noise when turning is part detective work, part experience. When you bring the car to our St Helens garage, we start by listening to your description, then we take it for a short road test to hear the noise for ourselves and confirm when and how it appears. That tells us straight away whether we are chasing a driveshaft, a suspension joint, a bearing or the steering.
Next the car goes up on the ramp. We inspect both CV boots for splits, cracks or thrown grease, wiggle the driveshafts to feel for play in the joints, and check the wheel bearings for roughness by spinning and rocking each wheel. We look over the drop links, top mounts and track rod ends for wear, and we check the power steering fluid level and condition. Where the noise is stubborn or unusual, our vehicle diagnostics in St Helens service lets us go deeper and rule out anything less obvious before we quote a penny of work.
The point of all this is that you never pay to have parts thrown at a guess. We find the actual cause, show you what we have found, and explain your options in plain English before we do anything.
Don't let a small split become a big bill. A CV boot that has only just cracked can sometimes be replaced and the joint re-greased before real damage is done, which is a far cheaper job. Leave that same split for a few months and the grit gets in, the joint wears, and now you are looking at replacing the whole thing. Early booking genuinely saves money here.
How we fix a worn CV joint
If the boot has only just split and the joint underneath is still in good order, we can often fit a new boot and repack the joint with fresh grease. That is the ideal outcome and the least expensive. Once a joint is worn, though, no amount of grease will bring it back, and the correct fix is to replace it. In modern practice that usually means fitting a complete new driveshaft, because a good-quality reconditioned or new shaft comes with the joints and boots ready to go, seals better and lasts longer than trying to rebuild the old one.
Our CV joint replacement in St Helens is a job we do regularly, using quality parts and getting you back on the road quickly. After any driveshaft or steering work we always recommend checking the geometry, and where needed our wheel alignment service makes sure the car tracks straight and your tyres wear evenly afterwards. If the clicking turned up as part of a wider service issue, it is worth pairing the repair with a full car service in St Helens so nothing else is quietly on its way out.
We know an unexpected repair is never welcome, which is why we offer pay monthly options at our St Helens garage, so you can get the work done safely now and spread the cost.
If the click has become a loud, harsh knock, stop driving on it. A CV joint that has worn to that point can seize or separate, which means losing drive to that wheel, potentially in the middle of a turn or when pulling into traffic. Don't risk a long trip on it. Give us a call and get it recovered or checked before you drive it any further.
Hearing a click on every turn? Let's find it and fix it.
Fastlane Autocare is an independent, family-run garage in St Helens, and we are RAC & AA approved and Motor Ombudsman accredited, so you get honest diagnosis and quality work you can trust. Book a diagnostic check online or call 01744 808586 and we will get that noise sorted.
Frequently asked questions
A rhythmic clicking on full lock, usually at low speed, is the classic sign of a worn outer constant velocity joint on a front wheel drive car. The joint has lost its grease through a split rubber gaiter, road grit has got in, and the bearings inside have worn. The noise comes from the side that is on the outside of the turn. Get it looked at before the joint fails. Ring 01744 808586 or see our CV joint page.
A constant velocity joint sits at each end of a driveshaft and lets the shaft transmit engine power to the wheel while the wheel steers and moves up and down over bumps. The outer joint handles the steering angle and takes the most punishment; the inner joint handles suspension travel. Both live inside grease-filled rubber gaiters. Once a gaiter splits, the joint is on borrowed time. Our St Helens technicians check gaiters at every service.
Listen for which way the car is turning when the noise appears. Clicking on a left hand turn generally means the right hand outer joint, because it is on the outside of the corner and running at the greatest angle. The reverse applies for a right turn. Clicking both ways usually means both sides need doing. Reversing in a tight circle often makes the noise louder and easier to place. Bring it in and we will confirm on the ramp through our booking page.
Replacing just the gaiter works well when the split is fresh, before grit has worked its way into the joint and started wearing the bearing surfaces. Once the joint has begun clicking, the damage is done and a new gaiter simply covers a worn joint. Catching it at the first sign of grease flung around the inside of the wheel arch is what saves the joint. It is an MOT failure either way. See our MOT suspension guide.
A torn or split driveshaft gaiter is a major defect and fails the test, because an open joint deteriorates quickly and the failure can affect steering and drive. Testers check every gaiter as part of the suspension and transmission inspection. Grease sprayed around the inside of the wheel arch is the giveaway. Getting it done before test day avoids a retest. Book a pre-MOT check or your MOT in St Helens with us.
Several other faults click or knock on lock. A worn top strut mount clicks as the suspension turns, a loose wheel bolt gives a click that changes with speed, a stone caught in the brake shield ticks continuously, and a worn track rod end knocks rather than clicks. Wheel bearings usually rumble rather than click. Pinning it down needs a road test and a ramp. Our suspension team will identify which it is.
Keep journeys short and speeds low while you arrange a booking. A clicking joint is worn but usually still driving the wheel; the concern is that a badly worn outer joint can eventually separate, which leaves the car unable to drive. Manoeuvring at full lock puts the most strain on it, so avoid tight turns where you can. Get it in quickly. Call 01744 808586 and our workshop will fit you in.
Both approaches are used, and which makes sense depends on the car. On many vehicles a complete reconditioned driveshaft costs little more than the outer joint and gaiter kit, and it renews the inner joint at the same time. On others the joint alone is the sensible repair. We price both and tell you which we recommend. Wheel alignment afterwards is worth checking. See our CV joint replacement page for the detail.
Split gaiters are behind almost every early failure, and they split because the rubber perishes with age, gets caught by road debris, or is damaged during other work near the driveshaft. Kerbing hard on full lock and repeated wheelspin also shorten joint life. Cars that are regularly manoeuvred in tight spaces work the outer joints harder. Regular inspection catches it. We check gaiters during every car service at our St Helens site.
A clunk points elsewhere. Worn anti-roll bar drop links knock over uneven surfaces and while turning, a tired top mount bearing clunks as the steering passes centre, and a worn wishbone bush knocks under load. An inner CV joint gives a vibration under acceleration rather than a clunk. Each is checked differently. See our drop link page and the ball joint guide for what to expect.
A groan or whine while turning is a steering noise rather than a driveline one, and it usually means low fluid, a failing pump or a rack under strain. Electric systems can produce a buzz or a whir from the motor. Those sound quite different from a mechanical click, and they change with engine speed rather than road speed. Describing the noise carefully helps. See our power steering page or the steering rack section.
A worn driveshaft joint does not wear tyres directly, but the suspension and steering components that often wear alongside it certainly do. Where a car has worn joints, it usually has tired bushes and geometry that has drifted out of specification, and that scrubs the tread away on the inner or outer shoulder. Checking alignment when the repair is done is worth the small extra. Book wheel alignment and see our tyre department.
Most driveshaft or CV joint replacements take two to three hours per side, plus time for an alignment check where the track rod or hub has been disturbed. Corroded hub nuts and seized suspension bolts can add to that on older cars, which is common in this part of the country. We give a realistic estimate once it is on the ramp. Larger jobs can go on monthly payments, so ask when you book.
Both sides are only replaced together when both are worn, since there is no balance requirement here as there is with brakes or dampers. That said, joints on both sides have done the same mileage, and where one has failed the other is often not far behind, so it is worth having both inspected while the car is up. We will show you what we find. Ring 01744 808586 or read our common MOT failures guide.