A constant velocity or CV joint is found in most front wheel
drive vehicles, many all-wheel drive vehicles, and occasionally, in rear-wheel
drives. The joint’s purpose is to transmit power from the transmission during a
wide range of angles, all with minimal friction. The CV shaft has joints on either end; these
allow the vehicle to drive while giving the suspension the flexibility to
navigate over bumps or potholes.
The CV joints are filled with a specialized grease, sealed
within the joint. That seal is the weak point for CV shafts. If the car or
truck has a lot of miles on it, the joint, also known as the CV boot, can
become weak. If it tears, grease seeps out of the joint and dirt and
contaminants can get into it.
If a CV joint has torn, you’ll hear a loud clicking noise
when turning the vehicle and accelerating slowly. Having the CV joint inspected
should be part of a scheduled inspection and maintenance visit, to make sure
the boot is not cracking or leaking grease.
Many vehicles on the road will never need a CV joint
replacement. It’s not a part that commonly has issues but a badly-worn outer
joint can even break apart while driving. For questions about service on your
Dodge, Ram, Fiat or any make or model of vehicle, see the ASE certified
mechanics at the Melloy Dodge Service Department. Our website also offers coupons for many service
issues to save you some money on car maintenance.
