What Are The Symptoms Of A Bad Rear Differential?

Why is my rear end humming?

A humming noise is often caused by an incorrectly installed ring and pinion gear that needs to be adjusted.

This humming noise converts into growling noise when the wear increases.

Humming noise can also be due to worn out bearings, which need to be replaced..

What oil goes in a differential?

Differential oil, sometimes referred to as gear oil, is found in the axle housing. It’s thicker than engine oil and is designed to perform under high pressure (gears mashing together, hydraulic nature of clutch packs) rather than high temperatures like engine oil.

What kind of noise does a bad differential make?

A failing differential will often produce loud whirring noises or sometimes rattling. Any time you hear a strange noise coming from your vehicle, you should get it checked out by an auto repair expert.

What causes differential failure?

Binding, noise and premature failure of the differential components may be caused by misalignment of the unit, axles or drive shafts. Vibration and a rattle noise while turning can be caused by a damaged or worn axle shaft or CV joint.

How do I put gear oil in my rear differential?

How to Put Gear Oil in a Rear AxlePark the vehicle and engage the emergency brake. Raise the vehicle with a jack under the axle for each side of the vehicle, if necessary. … Remove the differential fill plug. … Push the screwdriver into the fill hole and spin it around some. … Attach one side of the tubing for the siphon to the bottle of gear oil.

What fluid would most likely go 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.

How do I know if my rear differential is bad?

Here are the most common bad differential symptoms to look out for:Your vehicle is quickly going through oil.Difficulty steering.A loud front differential noise, such as the grinding of gears, clunking, or a “howling” sound.Rear differential noises. … Extensive and inexplicable wear and tear on your tires.More items…•

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 end sound like?

Regular clunking every few feet can also be an indicator of a broken pinion gear and/or chipped and damaged ring gear. Overly worn out bearings tend to make a howling noise when they do not properly support the gears. Rumbling while turning, on the other hand, is a sign of bad wheel bearings.

How much oil goes in a differential?

Use the highest-quality gear oil you can afford to fill the differential. The weight and capacity will be listed in your owner’s manual; your differential will usually hold as much as 3 quarts.

What happens when your rear differential goes out?

Typically, when the gears wear out — or the bearings fail — the differential will start to howl. You’ll hear something that sounds like a deep whistling sound that goes up and down in pitch as you go faster and slower. Sometimes it’ll go away when you step on the gas.

How much does it cost to replace 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.