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What would cause a whining sound when the accelerator is press in car?

* Transmission problems. A whining sound when accelerating can be caused by a problem with the transmission, such as a low fluid level, a worn-out bearing, or a damaged gear.

* Drivetrain problems. A whining sound can also be caused by a problem with the drivetrain, such as a loose or damaged driveshaft, a worn-out U-joint, or a bad differential.

* Wheel bearing problems. A whining sound can also be caused by a problem with a wheel bearing, such as a worn-out bearing or a damaged bearing race.

* Other problems. In some cases, a whining sound when accelerating can be caused by other problems, such as a bad power steering pump, a loose or damaged belt, or a vacuum leak.