Transmission & Drivetrain (A2/A3)第 23 / 120 题
Technician A says a worn driveshaft U-joint can cause a clunk on acceleration. Technician B says it can cause a vibration that increases with vehicle speed. Who is correct?
a.Technician A only
b.Technician B only
c.Both A and B
d.Neither A nor B
解析
A worn universal joint clunks when torque is applied and vibrates more as speed rises because the joint develops play. Both technicians describe valid symptoms. Rust-colored dust around the caps is an early sign of failure.
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