PART REQUEST
What is a drive shaft ?
FWDs typically does not have a drive shaft; instead they combine the transmission and axle into a single unit called the transaxle.
In RWDs, a long drive shaft is necessary to send power to the length of the vehicle. Most of these vehicles have a clutch and gearbox (or transmission) mounted directly on top of the engine, with a drive shaft leading to a final drive in the rear axle.
In 4WDs and AWDs, there are two drive shafts. There is the same driveshaft that is present in a rear-wheel drive car and additionally, there is also a front driveshaft that is connected to the front differential and the transfer case by U-joints.
When to replace your drive shaft
The driveshaft is an important part of the drive train – if it does
not function properly, it can cause a lot of problems to the
operation of the vehicle. You may not easily notice that the
driveshaft is broken from the way it looks. However, its internal
parts need to always be free of wear and should be well
lubricated in order for it to function properly. If you notice any of
these signs while driving, it could be an indication that your drive
shaft is in need of replacement-
2. Squeaking sounds – Squeaking sounds can be the sign of a
problems are intense vibrations that come from underneath the
vehicle. This happens due to driveshaft bushings or the universal
joint (U-joint) being worn out
couple of drive shaft problems. While it doesn’t necessarily mean
that the drive shaft has failed, squeaky noises at low speed do
typically indicate that the bearings or the U-joints are in need of
lubrication.
3. Clunking sounds – Loud clunking noises coming from beneath
the vehicle while shifting gears is often an indication that the U-
joint is badly worn out and in need of replacement.
4. Other strange noises like clicking or knocking – These noises
usually mean that the CV joint or some other part of the drive
shaft is worn out and in need of lubrication or replacement.
5. Difficulty making turns – This is most likely to be a U-joint issue.
A failing U-joint will prevent the wheels from turning properly,
making it difficult to control the vehicle. You can check the U-
joints yourself by simply parking the vehicle, putting it into
neutral and moving the U-joint yokes back and forth. Too much movement is an indication that you are headed for trouble. While you’re at it, checking for visible rust on bearing cap seals is also a good idea since it can be another indication of driveshaft problems.
6. Shuddering while accelerating – this is typically caused due to a
loose u-joint or a bad carrier bearing and is commonly
accompanied by unusual sounds. If your vehicle feels like it is
faltering or shuddering when you press the gas, its an indication
that your driveshaft is in need of a checkup and possible replacement.
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