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differentials

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Symptoms of a Bad or Failing Support Bearing
Common signs include unusual noises and shuddering during acceleration.
Symptoms of a Bad or Failing Differential Output Seal
Common signs include whining sounds and oil leaks coming from the differential.
Symptoms of a Bad or Failing Axle Shaft Seal
If there are signs of leakage, puddle of fluid, or the axle shaft pops out, you may need to replace your car's axle shaft seal.
Symptoms of a Bad or Failing Pinion Seal
Common signs include a leaking pinion seal, low fluid in the differential, and a whining noise while the vehicle is in motion.
How Does Traction Control Work?
It’s raining as you drive on a darkened highway late at night, but you never worry about safety. Your car has traction control. While you know the term, you may not understand what it...
How to Check Your Car’s Differential Fluid
Ever since you got your driver’s license, you’ve been to told to check your engine oil. But what about the fluids underneath your vehicle? If you’ve got a rear-wheel...
How Often Do I Need to Replace My Car's Differential Fluid?
Many folks do not even know what the differential does. It is not one of those common car parts like the transmission or radiator. In fact, some people go the entire lifetime of a...
How Often Does My Car Need New Transfer Case Fluid?
A transfer case is a part of a drivetrain system. Its primary function is to engage the axles of multi-axle vehicles. Positioned underneath the vehicle, a transfer case is made of an aluminum or...
How to Replace a Pinion Seal
A pinion seal keeps oil in the differential and keeps water, dirt, and debris out. A failing pinion seal will leak which can ruin the differential.
How to Replace a Differential Gasket
Differential gaskets seals the differential housing and protects the rear-end gears and axles from exposure to the elements.
How to Replace a Differential Output Seal
Differential output seals prevent fluid from leaking out of the differential, causing the differential to overheat and cause damage to your car.
What is Rear-Wheel Drive?
For the better part of the twentieth century, nearly every vehicle on the road had the engine sending power to the rear wheels. This arrangement makes a lot of sense to designers, with the...
How to Buy Good Quality Differential/Gear Oil
Gear, or differential, oil is used to lubricate the gears in a car’s transmission so that it can shift smoothly and easily. This type of fluid is generally used on standard transmissions,...

Related questions

Question
4 wheel drive is very noisy.
Hi there. Check the front axle for an axle that could be damaged, a universal joint in the front axle that could be broken, or the differential gears could be damaged. If you have part time 4WD, meaning you have...
Question
Car is lurching at 10 mph after changing the rear differential.
Hi there. The symptoms that you are experiencing is that the gear ratios from the front axle and the rear axle are different and causing the vehicle to lurch at low speeds. Take the vehicle off road on a dirt...
Question
Car making squealing noise like some things being sheared off. 1991 Ford Mustang
Hello - setting up the ring and pinion gears in the differential is a highly specialized task, requiring specialized knowledge and tools. And the parts are not inexpensive, so all the more important to get this right up front. Check...
Question
Can I change gear ratio of my rearend if I also change the front
When it comes to a four wheel drive vehicle, it doesn't really matter what gears you use, as long as they match on the front and rear. So, if you wanted to switch to a 355 gear, that would be...
Question
Transmission problems
A diagnostic is only meaningful if there is a specific identification of a part or parts that have failed, are worn out, defective or the like. The bearings in the differential that you refer to are not visible for inspection,...
Question
Whining from transmission to rear end area 2007 Chevrolet Silverado 1500
Hello - your intuition is correct. The ring and pinion gear are severely worn, and will need to be replaced (w/all new ring and pinion bearings) to eliminate the "noise under load" you notice. Setting up a ring & pinion...
Question
recall rear axle pinion nut
Hello there, the recall for your 2005 Dodge Ram 1500 only covers adding a retention device to the rear differential pinion nut. This does not require draining the fluid from the differential or opening the rear cover. The differential fluid...
Question
Differential makes a whining noise when ever the car is moving (accelerate or decelerate)
You should have the vehicle road tested by a mechanic like one from YourMechanic to see if the noise is inside the differential or in one of the axle hub bearings. The vehicle may have to be run on a...
Question
1998 Jeep Grand Cherokee 5.9 limited repair question
Since the fluid is dark colored I suspect the front differential is leaking or broken and came apart. have the fluid level in front differential checked and inspect to see if you see damage to unit. You may have to...
Question
Car will not move when in gear but will shift in gear and turn the tires when jacked off the ground. 2000 Chevrolet Cavalier
Hi - I am afraid you have a broken gear or shaft in the drivetrain - specifically in the transmission assembly. The jerky motion, but without real rotation of the wheels, indicates something in either the transmission (gear set, shaft)...
Question
Transmission issues? 2003 Honda Accord
Hi there - this transmission has had its problems, including a Recall (# 04V176000) for inadequate internal lubrication issues causing a loss of 2nd gear and worse. Check with Honda to see if this recall has been applied to your...
Question
Cost to replace rear differential on a 2014 Tacoma TRD 4x4?
Billing question was sent to CS for the cost to replace the rear differential on a 2014 Toyota Tacoma TRD 4WD.
Question
I'm being told my rear dif is toast. How does this happen? Is it due to lack of rear dif oil changes or do they just wear out? 2009 VW Tiguan
Hello - your Tiguan is equipped with a Haldex torque-sensing system which directs power thru the differential to the axle (left/right) which has the best traction. Think of the differential as the reduction gears and axle(s) drive, and the Haldex...
Question
when i drive my car i fell it too heavy and when i lifted up i noticed the front right wheel not spin free like the left side
On the drive wheels, which are the front wheels in your case, there will be some resistance to turning because of the connection to the transaxle through the CV axles. If it takes a lot of force though to rotate...
Question
Rear differential problems
If you are getting a noise from the rear end when you put pressure on it by giving it gas then the cause is going to be the ring and pinion bearings most likely. Have the pinion bearing checked where...
Question
Problems removing Dodge Ram rear differential
The instructions for removing the rear differential assembly for your truck as follows: * Position the vehicle on a hoist (or jack stands) * Position a support under the axle assembly * Remove all the brake components * Remove the...
Question
Question
There were 14 different axle, ratio and rear brake combinations for those two years. 1997 and 2001 do not interchange. However, a quick look at the published interchange data suggests that IF the axle, ratio, and brake set up "matches",...
Question
driver side axle repair seal is leaking honda crv 2014
If you are referring to the CV axle seal that is within the side case of the transaxle (i.e., transmission fluid is leaking), the service to request to get that leak repaired is axle shaft seal replacement. It is a...
Question
Does the Transmission and Differential take the same fluid on a Acura TSX?
Hello, I would not recommend to use transmission fluid for the differential. Yes, Acura did use a transmission fluid for the rear differential originally called Z1 but a new fluid (DW1) was formulated and Z1 production ceased. However the fluid...
Question
loud noise from drivers side rear wheel
If a bearing in the differential has failed, the differential has to be opened up and rebuilt or replaced. You just want to make sure that the noise is not from a failed wheel bearing because if you have a...

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