Why does my car make a loud noise when I turn my front wheels?

When I turn my steering wheel either all the way or just right or left, I hear a loud "clunk" sound from the front wheels of my car.

My car has 1243000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hi, thanks for your question. I’d be happy to provide my insight.

This is a common sound when the struts are worn out or when there is separation between the strut nut and the strut mount. I would also suggest checking the ball joints, control arms, tie rods, and sway bar links. Any of these front suspension components have the potential to make this kind of clunking sound when worn out or loose.

If you would like help inspecting your front wheels, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make any repairs as needed.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

A clunking, rattling, or squeaking noise from your front end while driving can be annoying and unnerving. Oftentimes, this noisy symptom means there is a problem with your vehicle`s suspension system. These sounds typically occur when driving over uneven surfaces, bumps, or potholes.
Clunking

If the clunk happens when you drive over bumps, there might be a problem with your car`s suspension, or part of the exhaust could be loose. However, if your car clunks when you`re turning corners, it could be a problem with the steering, wheels and tyres, or a worn-out wheel bearing.

Damaged or Worn-out Control Arms

Control arms can wear out even in normal road conditions. The damage and wear are accelerated if you drive in off-road conditions. Worn-out control arms may cause the wheels to move out of alignment, which causes the vehicle to make a clunking noise as you steer the wheels on a bump.

There is most likely nothing wrong with the replacement shock or strut, but a metallic clunking noise typically indicates loose or worn mounting hardware. A loose mount can allow movement between the bolt and attaching parts, while a mount that is worn can cause the shock/strut to move up and down.
This symptom typically happens when you have a suspension issue, and occurs when driving over bumps, uneven surfaces, debris, potholes, and more. It could be that some suspension part is loose or broken. The suspension system is fairly complex, so finding the exact source of the noise can be tricky to do by yourself.
When a wheel hub bearing wears out, it puts extra stress on the CV-joint. That can cause the knocking/clunking noise when you turn the vehicle.
If you hear a clunking noise that is especially prominent when you drive over potholes or speed bumps, you probably have a problem with your shock absorbers or your suspension. Continuing to drive with a broken or faulty shock absorber is a bad idea for the health of your car.
There are four sounds in particular that you should look out for: creaking, grunting, rattling, and knocking. See your auto collision center if you hear any of these noises, and keep reading for more on the four sounds of suspension problems.
When your tie rods go bad, the symptom you`re most likely to experience first is a vibration or shaking sensation in your steering wheel. You may also hear associated clunking and rattling noises, especially when turning the vehicle at low speeds. These sounds are caused by tie rods that are starting to wear out.
Internal shock or strut noise is uncommon. The most common cause for clunking noises over bumps is the mounts or attaching parts. Careful inspection is often required to identify the cause. Mountings and bushings can appear to be tight, but move slightly when driving.
When a front CV axle goes bad, it will make a clunking noise as you make a slow turn. When a rear axle goes bad, the clunking or moaning sound will be in the back.

Relevant Questions and Answers :

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car won’t start.
ANSWER : A possibility is a faulty ignition switch. If the switch opens after the car starts, the engine will shut off. But, that is just a possibility and a diagnostic would have to be performed to rule that in or out. Be sure you have a fully charged battery that passes a load test. Starters motors can display intermittent operation if they are faulty. With a fully charged battery, if the starter motor does not run that signifies an electrical problem in the starter circuit (includes the ignition switch) or a problem with the starter motor itself. If there is power to the starter motor and yet it doesn’t run, the starter is condemned and replaced. Alternatively, if there is no power to the starter, or there is a big voltage drop anywhere on the circuit to the starter, then the circuit has to be traced until the fault in the circuit is found. Notably, faults can include high resistances, due to corrosion, wire strand breaks, or loose terminals, which can only be diagnosed using a voltage drop test. Regardless of what the underlying cause of the no start condition is, if you desire that a certified mechanic resolve this promptly, please simply request a no start diagnostic and the responding mechanic will get it diagnosed and repaired for you. Please let us know if you have further concerns or questions as we are always here to help you.

The car makes loud shaking/jarring noise when the steering wheel is only slight turned rightward. There is no noise when turning left.
ANSWER : Hi there. From the description you have provided, the noise you are hearing from the rear of the vehicle and the feeling your vehicle has while driving, should be looked at sooner than later. The swaying (fish-tail) action, could be a broken sway bar. It could also be a broken shock absorber. These are safety concerns that you’ll want to have addressed soon. I recommend having your vehicle’s noise inspected and repaired by a certified technician, like one from YourMechanic.

steering wheel turned to the far right and locked in place while the wheel are straight. and I can’t turn the key.
ANSWER : Hi there. From the description you have provided, concerning your vehicle’s steering wheel is locked far right and key won’t turn with the front wheels in a forward default position, is somewhat confusing to me. It could be, undo pressure is being applied to the steering wheel lock. You could try, physically moving the left front tire side to side in either direction, to relieve the pressure on the steering wheel lock. It could be, the key you are using has a problem, try another key if available. It could be, the ignition lock cylinder is at fault. I recommend having your vehicle’s can’t turn the key be diagnosed and repaired by a certified technician, such as one from YourMechanic.

Why does my car make a loud noise when I turn my front wheels?
ANSWER : Hi, thanks for your question. I’d be happy to provide my insight.

This is a common sound when the struts are worn out or when there is separation between the strut nut and the strut mount. I would also suggest checking the ball joints, control arms, tie rods, and sway bar links. Any of these front suspension components have the potential to make this kind of clunking sound when worn out or loose.

If you would like help inspecting your front wheels, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make any repairs as needed.

steering wheel won’t unlock my key turns only to turn lights on but that’s it can’t unlock steering wheel to start the car what to
ANSWER : The steering lock may not be unlocking either due to a faulty ignition lock housing or more commonly as the cars age a faulty spring at the steering wheel on the under side of the column. If the ignition lock housing is the issue the housing can be replaced. It s a bit tricky as the mounting bolt has break off heads and generally need to be driven out with a punch. If the lock is not disengaging because of a faulty spring on the ignition lock many owners have had the spring removed by having it drilled out of the housing. However, removing the spring may permanently disable the steering lock. The last option would be to replace the steering column. You may want to enlist the help of a mechanic who can recommend the proper repair for your situation.

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ANSWER : A common cause of a noise like that is tire belt (internal) separation, flat spot(s) on tire or other tire defects. If the tires end up being excluded during a diagnostic, the CV axles, wheel bearings, and unfortunately the transmission and clutch have to be considered. The noise on turning is suggestive of a possibly defective outer CV joint but very loose tie rods ends and ball joints can sometimes be implicated. Also, it is possible to have a bad strut bearing, in the strut mount. Keep in mind, a "combination" of faults might be in play here. Your best bet is to request a front end inspection/diagnostic during which the responding certified mechanic will get this resolved for you insofar as identifying the root cause(s) and estimating the repair for you.

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ANSWER : Anything is possible with enough engineering. The changes you are looking at would take major structural changes and would definitely not be an easy job. You could possibly consult a manufacturing engineer to get more details on how this could actually be carried out and whether it would be feasible.

The left front wheel makes a metal grinding noise when turning right at a slow speed – 2009 Cadillac CTS-V
ANSWER : Hi there – based on the symptoms you describe, I believe your left front wheel bearing is shot. I would recommend having the wheel bearing/hub assembly replaced by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, and repair this problem.