Dual Mass Flywheel

Have you noticed pulsation, chattering or rattling noises in your driveline lately? These are often indicative of a flywheel in the process of failing

A dual-mass flywheel is a two-part unit. A smaller-diameter flywheel bolts to the engine and sits inside of a drum-brake-like outer flywheel. The smaller flywheel engages the larger one via a set of springs. This design offers a bit of buffering between the engine and transmission to enhance smoothness during clutch engagement. A failing dual mass flywheel will first rattle when depressing or releasing the clutch, then proceed to exhibit symptoms similar to clutch chatter even after full engagement. This malfunction will typically occur during initial engagement and while shifting through the lower gears.