Should the CV joint be replaced as a single unit or in pairs?
2 Answers
CV joint damage generally requires replacement in pairs. Below are the specific details about CV joints: 1. Function: The CV joint, also known as a constant velocity universal joint, connects the driveshaft to the wheel. It is a crucial component in the vehicle's drivetrain system, ensuring continuous power transmission to the wheels in any direction, especially when the wheels are bouncing. The inner CV joint connects to the transmission differential, while the outer CV joint connects to the wheel. Both play essential roles during power output and vehicle turns, with the outer CV joint being particularly active. 2. Symptoms of damage: If a CV joint is damaged, regular abnormal noises may occur during steering or when driving over bumps. In severe cases, power loss may even occur.
Last time when my car had steering issues, the inspection revealed a cracked left CV boot dust cover, so only that part was replaced. But less than five months later, the right side failed too with louder steering noise, and it even damaged the ball joint, costing me over 1,000 yuan extra in repairs. That lesson taught me that wear on both sides of steering systems usually progresses simultaneously, and replacing just one side may accelerate wear on the other. The mechanic recommended replacing them in pairs - slightly higher cost but worry-free, avoiding repeated garage visits. Driving with unbalanced components affects handling, especially risky during high-speed turns. Now I always opt for paired replacements for similar issues as preventive maintenance. After all, safety comes first, and saving money and time is what really matters.
