Ecological backlash
It is the alternator....
electrical interference
Could be the resonator
possibly your wheel bearing is on its way out
not enough oil usually
Bearing in blower motor?
Stereo interference?
Alternator is defective and needs replacing.
There is nothing more powerful to 'break a mother's back' than whining - and children know it! Pediatric psychologists feel that whining is a sign of immaturity, spoiling, or insecurty. More likely, it persists because it gets the child what she wants. Whining usually peaks at age 3 years old.
The Diff oil ir either needing changed or topped up, if its a whining noise that is.
Gas Lid not tight is the reason my eng. Light keeps coming on