Question:
I hear a clunking sound from my front wheel when I make a turn. What could be the problem?
Bob's Auto Service Answer:
One possible cause of the problem is a worn axle. Front-wheel drive vehicles have axles that transfer power from the transmission to your front wheels. There is one for each front wheel. These axles are called constant velocity axles or CV axles for short. Rear-wheel drive vehicles have axles that are in back and run between the differential and the rear wheels. Of course, all-wheel drive vehicles will have an axle at each wheel.
When a front CV axle goes bad, it will make a clunking noise as you make a slow turn. When a rear axle goes bad, the clunking or moaning sound will be in the back. Now there really isn't any preventive maintenance you can have performed to make your axles last longer, but you can have them inspected from time to time to see if a problem such as a leaking seal or torn protective boot has arisen. Sometimes finding the problem early will make the repair easier and less costly.
Of course, axles do wear out and need to be replaced. This is dangerous and should be repaired as soon as possible. A severely worn axle can seize up, causing damage to your transmission or other components. This could even lead to an accident for LACROSSE drivers who ignore a worn axle.
If you suspect an axle problem, have it looked at right away. Ask your friendly and knowledgeable Bob's Auto Service advisor if it's time for an axle replacement.