The hum that comes when the 206 1.4 xline accelerates

Friends Hello, when I accelerate a little with my car, there is an especially humming hum in the back seat. And recently, when I pass a little fast through bumps or rough roads, there is a deviation in the car or the steering is extremely stiff when I first start the car in the morning.

If there is hum in the back seat, it may be related to the gas pump. If there is a swing behind the vehicle, it may be related to torsion or the shock absorbers may break out. check the steering oil level, the pump may be faulty.

The ball of the rear right wheel was out of order. Steering hydraulic oil has been reduced, so there is stiffness in the steering wheel, but no leakage has been observed. We could not understand why it was reduced. Oil was added. If it repeats, we will open the steering box completely.