Normally a whining noise in the back end means the differential is shot
the bearings are probally giving out.
The loud whining sound could be wheel bearings going out. However, it is also possible that the speedometer bearings or cable are defective.
Could be the tyres, differential, gearbox. wheel bearings
A whining sound coming from the front of the engine would make me think one of the bearings is wearing out in the belt assembly. This is something you should fix promptly.
Loud, whining, growling sound. Rear end jerks at random if bearings are locking up.
The whining sound may be the bearings in the alternator and they may be seizing up or draging and possibly your belt is slipping on the pulley. Do you have a voltage gauge in your instrument panel? Or just a warning light like a picture of a battery?
whining
sounds loke the wheel bearings are going out
A worn out clutch release bearing would cause a whining sound when you put your foot on the clutch.
The high-pitched whining noise in a 2009 Jetta can be attributed to several potential issues, such as a failing alternator, worn-out serpentine belt, or issues with the power steering pump. The alternator may produce a whining sound if its bearings are worn, while a loose or damaged serpentine belt can create a high-pitched noise when it slips. Additionally, if the power steering fluid is low or the pump is malfunctioning, it can also generate a whining sound. It’s advisable to have a mechanic inspect the vehicle to pinpoint and address the exact cause.
A whining noise from your compressor can indicate several issues, such as low refrigerant levels, which may cause the compressor to work harder than normal. It could also be a sign of worn bearings or mechanical components that are experiencing friction. Additionally, a misaligned or loose belt can create a whining sound as it slips during operation. It's advisable to have a professional technician inspect the unit to diagnose and resolve the issue effectively.
Your child in the backseat.