How to Tell If Your CV Axles Are Going Bad

If you're hearing a popping or clicking sound when you turn, or vibration when you accelerate down a straightaway, there may be an issue with your CV axle. The constant velocity axle, or CV axle, connects your wheels to the transaxle or transmission, allowing your vehicle to drive. CV axles have inner and outer joints with a boot on each end. CV axle failures are usually caused by a broken or leaking boot, which is often followed by failing bearings in a joint. When joints wear out, the symptoms will be obvious. If there's an issue with the inner joint, you'll experience vibration and noise during straight line acceleration. If there's an outer joint problem, you'll hear a loud popping or clicking sound when sharply turning the wheel. You can identify boot issues with a simple visual inspection. During inspection, turn the wheel to all angles, looking for cracked or split rubber and grease on either the outer or inner boot. A bad boot allows grease to leak out and debris to sneak in, ruining the CV joint bearings. Your CV axle makes your car move, so keep it in good shape. Visit AutoZone or for the parts, tools, and trustworthy advice you need to make a repair.