Constant-velocity or CV joints allow a rotating shaft on an automobile to transfer energy without increasing friction. This allows components to operate smoothly without excessive wear and tear. When CV joints become worn or damaged it can begin to impact the automobile's performance in several ways including acceleration and turning. Failure to address this problem when symptoms arise could lead to more expensive repairs down the road.
Noise When Turning
Torn or ripped outer CV joints may generate a popping or clicking noise when you're turning the vehicle, according to AA1 Car, an automotive repair website. The sound may grow louder depending on the severity of the turn. For example, a vehicle with torn CV joints making a slight right turn may barely make a noise at all while a car making a U-turn may exhibit loud clicking or popping noises emanating from near the front tires.
Failing CV joints may cause the vehicle to shudder or vibrate excessively when accelerating. This can be caused by worn parts rubbing against one another. Normally these components are lubricated to prevent vibration but as CV joints degrade this lubrication also wears away. A lack of lubrication in CV joints also may be accompanied by a growling or humming sound when accelerating. Vibration from ripped CV joints also can affect the operation of the transaxle and cause wear in the transaxle mount in four-wheel drive vehicles.
Failed or failing CV joints may produce a clunking noise when the vehicle is accelerating, decelerating or when the transaxle is put into drive. The clunking noise is caused by excessive movement between the CV joint's inner joints on front-wheel drive vehicles, inner or outer joints in rear-wheel drive vehicles with independent suspensions or the driveshaft CV joints in four-wheel drive/rear-wheel drive power train vehicles, according to AA1 Car.
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