Noise when driving and turning.

[deepimpact]

For the past month, I’ve been experiencing a strange noise that I haven’t been able to capture on video or audio. It only occurs in very quiet situations, typically when I’m in a parking lot and the car is rolling slowly—without using the accelerator.

When I turn the steering wheel slightly left or right while rolling, I hear a repeated “whomm whomm whomm” sound coming from underneath the car. It’s difficult to tell whether it’s coming from the front or rear, but it feels like it’s coming from directly beneath the vehicle. The noise does not occur when driving straight—it only happens when turning, even slightly.

I can also occasionally hear it while driving at normal speeds in everyday traffic.

The Ford service center recently replaced the power steering system, but as I suspected, the noise remains. I also told them to check the break components, joints, everything OK they told me...

I’m now wondering what kind of components could cause such a noise only when turning—especially from underneath the vehicle. I’m really at a loss.

One possibility (though I’m not convinced it’s the issue) is that it could be related to the winter tires I’m still using, even though temperatures have been between 10–20°C lately.

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[Metz3020827]

Is it a wheel bearing maybe?

 

[Optimum Performance]

Have you ever changed the differential fluid?

 

[Cobra Jet]

Sounds like failing wheel hubs bearings…. Very common with the S550’s; some M6G members have had them fail with really low miles while others have had them fail with middle milage (10k+). Thwre’s quite a few threads in here with failures, even some have had them replaced multiple times.

Signs of a wheel hub failing:
Safely jack car up, grasp the wheel at the 12/6 position and with a tilting motion tug hard at the bottom and top of the wheel toward you. Do the same from the 3/9 position and again tug the wheel towards you. If there is significant movement or loose/clunking feeling then the hub is bad. Remove the wheel and remove the brake caliper. Slowly spin the hub, if it feels like and sounds like sand being grinded against metal, the hub is bad.

When driving you will hear and feel a rumbling sensation that will progress with speed and dissipate with deceleration. When going into curves/turn, steering, or when the car leans its weight into the wheels, the noise will get worse/louder and feel like you’re driving on stones or rumble strip.

 

[deepimpact]

Thank you for your hints. Can this be checked during a wheel change easily? Then I will tell him that.

 

[Metz3020827]

Thank you for your hints. Can this be checked during a wheel change easily? Then I will tell him that.

Yes.

 

[deepimpact]

I noticed something.

When I let the car roll in D, and turn left or right, while hearing the noise, and then change to N, the noise disappears, while still turning while rolling.

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