Sometimes when I'm driving my X90 on the highway, there's a humming sound coming from the engine compartment. What could that be?

Sometimes when I'm driving my X90 on the highway, there's a humming sound coming from the engine compartment. What could that be?

When driving over 80 km/h and releasing the accelerator, I hear a consistent humming sound from the engine compartment, similar to the vibration of a phone ringing. Any ideas on what this might be?

When driving the 2014 Foton Tunland 2.8S 4WD, there is a noticeable humming vibration in the cabin when the alternator speed is below 1600 RPM. However, once the engine speed reaches 2000 RPM, the humming sound disappears. Could any experts advise on what might be causing this issue?

Is it normal for a loud humming noise, similar to an air conditioner compressor, to come from the front of the car during charging?

Has anyone encountered a humming noise coming from the left rear wheel of their Defender 110 after parking? The sound stops after about 3 minutes, and there's no noise from the other wheels.

Friends, when driving at 120 km/h on the highway, there's a humming noise coming from the chassis. What could be the reason? Bearings have been ruled out first.

Hey everyone, I've got an issue with my 09 model. Sometimes while driving, there's a sharp "dang dang" sound coming from underneath the car. It comes and goes, and sometimes I can even hear it when idling. The repair shop mentioned it might be the exhaust pipe but then said it doesn't seem like it. They think it might be coming from the bottom of the engine. Have any of you experienced something similar?

Is there a clicking sound coming from the engine?

I drive a 1.6T 508, and it's been 8 years with 85,000 kilometers on it. Recently, after I filled up with some cheaper gasoline, I've been noticing this humming sound when I drive faster. It's coming from the engine, and it's making me feel dizzy. Not sure if it's just in my head.

When the AC is on in the X90 Plus while driving on the highway, there's a periodic hissing sound. Do any fellow car enthusiasts have the same issue or know the reason? Thanks.