Quick Answer: Why Is My Rear End Humming?

Can you drive with a bad rear differential?

Technically, you can drive with a bad differential, but it is not wise.

The problem may get worse, to the point where it leaves you stranded somewhere.

It can also cause damage to other surrounding components..

What does a bad rear axle sound like?

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. … A “Rumble” while cornering or turning may indicate bad wheel bearings.

What causes whining noise in rear end?

A whine during deceleration may mean there is a bad or loose pinion bearing. A howl during acceleration may indicate the same problem. Rumble or whining sounds only at speeds greater than 20 mph could be a sign of a worn carrier bearing. The sound may change while cornering.

How do I know if my rear axle bearings are bad?

The main indicators of a rear axle bearing failure are noise, play and leaks. Using noise from a rear axle to diagnose a wheel bearing can be difficult. Typical bearing noise that you hear from a front-wheel bearing is dampened by the mass of the axle assembly.

What does a broken axle sound like?

Clunking Sounds If the axle is damaged the vehicle will strain to move. When you put your car into gear you may hear a sudden sputtering or clunking noise as the car struggles to transfer power to wheels. The noise will generally come from a specific point in your car, which can indicate where the problem is.

What happens if you don’t change rear differential fluid?

Most differentials need a fluid change at about 50,000 miles. If left too long or if the fluid starts to run low, the differential will become noisy and can eventually fail. If that happens, the gears can seize, locking up the rear wheels and potentially causing a lot of damage or even an accident.

What are the signs of a bad rear differential?

Signs of a Bad Rear DifferentialNoise in Gear from an Idle. When the vehicle is turned on and first put into drive, there may be a rattle or clanking noise coming from the rear of the vehicle. … Grinding Gears at Speed. When the vehicle accelerates, there may be more noises like a hum or continued clank from the rear. … Vibration and Fluid Leak.

What sound does a bad rear wheel bearing make?

The classic sounds of a bad wheel bearing are cyclic chirping, squealing and/or growling noise. You can also tell that the sound is related to wheel bearings if it changes in proportion to vehicle speed. The sound can get worse with every turn, or it can disappear momentarily.

How do you stop rear end noise?

How to fix a noisy differential: Replacing the differential fluid may stop the sound, or replacing a pinion or side seal may solve the problem. However, once the noise gets bad, rebuilding or replacing the differential may be the best way to fix the noise.

What happens when a rear wheel bearing goes out?

If a wheel bearing goes bad, more friction will be placed on the wheel, and the wheel will start to wobble. … The most common symptom with a bad wheel bearing is a loud noise coming from the tire or wheel of the vehicle. It will sound like metal grinding on metal and will get louder as the vehicle goes faster.

What causes a rear wheel bearing to go bad?

The main reasons that a wheel bearing fails are: … Driving conditions – driving through deep water or mud can cause your wheel bearings to fail. Water, mud or other contaminants such as dust or road salt could get past the seals and enter the bearing, polluting the grease and wearing away the bearings.

How much does it cost to fix a rear differential?

Combined with the few hours of labor required for their replacement, the typical rear differential cost of repair is between $200 and $400. If gears are required, that number jumps a bunch. Rear differential repairs that include a new gear set may be $1,500 or even higher between parts and the labor to replace them.

How often should differential oil be changed?

every 30,000 to 50,000 milesBecause the differential is at the rear and under the car, it gets none of the star treatment that the engine up front does. But if lubrication in the differential fails, you won’t be getting very far for very long. Fortunately, you only need to change this oil every 30,000 to 50,000 miles.

What fluid goes in a rear differential?

Every front or rear axle is filled with a special oil (also called differential fluid, or gear oil) that takes care of this. The differential fluid lubricates the gears, bearings and other internal parts, and provides cooling to these components as well.