CV axles (constant velocity axles) transfer power from the transmission to your front wheels while accommodating the up-and-down movement of the suspension. They’re essential components in every front-wheel-drive vehicle and in the front of AWD vehicles — and when they fail, you hear and feel it. At Norm’s Auto Clinic in Coweta, Oklahoma, we replace CV axles quickly and at a fair price, getting you back on the road without pulling to one side or clicking through turns.
What Is a CV Axle?
A CV axle consists of a solid steel shaft with constant velocity joints at each end — typically a larger outer joint (at the wheel) and an inner joint (at the transmission). These joints allow the axle to transmit power smoothly at varying angles, which is necessary because the wheel moves up and down with the suspension while the transmission remains fixed. CV joints are packed with special grease and enclosed in rubber boots to keep the grease in and contaminants out.
The CV Boot Problem
Most CV axle failures begin with a torn CV boot. The rubber boot that seals each joint cracks, tears, or splits with age, heat exposure, and road debris contact. Once the boot tears, the grease is flung out during operation and dirt and water enter the joint. A CV joint without grease fails rapidly — typically within a few thousand miles of boot failure. In Oklahoma’s summer heat and dusty conditions, boot failure accelerates.
Catch it early: A torn boot without joint damage can sometimes be addressed with just a boot replacement, which is significantly less expensive than a full axle shaft. However, if grease contamination has already occurred (visible dirt or grit in the grease), the joint needs replacement regardless of how recently the boot tore.
Signs of CV Axle Failure
- Clicking or popping during turns — Most classic symptom; the clicking intensifies in tight, slow turns. The outer CV joint is worn and clicking as it articulates at a steep angle.
- Clunking on acceleration — Inner joint wear causes a clunk when the engine load is applied; may also occur when shifting from drive to reverse
- Vibration during acceleration — Worn inner joints can cause driveline vibration that worsens with vehicle speed
- Visible grease splattered inside wheel well — Grease thrown from a split boot; look for dark greasy spots on the inside of the wheel or surrounding components
- Torn or split CV boot visible — The boot itself is visible with a brief look under the vehicle at the axle shaft; torn rubber is obvious
CV Axle Replacement at Norm’s
We replace CV axle shafts with quality remanufactured or new axle assemblies meeting or exceeding OE specifications. In most cases, full axle shaft replacement is more cost-effective than individual joint replacement, since the labor involved is similar and the new shaft provides longer-lasting reliability.
We inspect both CV axles at each visit for early boot damage — catching it before the joint is damaged saves you money. Norm’s Auto Clinic — 19 N. Broadway, Coweta, OK 74429. Call (918) 279-8100. Serving Coweta, Broken Arrow, Wagoner, and the Tulsa area.