What causes a whirring noise from the rear axle?
What causes a whirring noise from the rear axle? Here are a few common “noises” that may come from the rear axle that need immediate attention: • A “whirring” noise while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload. What's the difference between wheel bearing noise and rear differential noise? Thankfully there are a few simple things that can help distinguish between rear differential noise and wheel bearing noise. Wheel Bearing Noise. Simplest check to identify a failing wheel bearing is to suspend the car so that the wheel...