Wobbling humming noise at sixty or more mph

2BLIMITLESS

MEMBER
2016 KIA PICANTO
1.2L
4 CYL
2WD
MANUAL
13,000 MILES

Hi guys, my car is making a rhythmic humming noise at 60 mph+ which gets louder the faster I go. The kicker is that when the clutch is disengaged, the noise goes away. Also the engine does not make any noises when revved in neutral. As far as I can tell all these things should rule out wheel bearings, tires and engine. Why is it only making this noise at speed, in gear, and only at 60 mph+? Any ideas?

1 Reply

JOETECHPRO

MECHANIC
705 POSTS

Hey 2BLIMITLESS,

I would say this points to a bearing gone in the drivetrain somewhere.

When you disengage the clutch there is no longer load on the bearing from the engine.

The next step would be to run the vehicle up on a hoist and then to test with a stethoscope to try and locate the cause of the noise.

A bad bearing should be able to be located by this method.

Can you feel the vibration through the floor of the car?

Is your vehicle still in warranty?

Regards, Joe