DEFINITION: Grabbing (Chattering)

Engine mounts

Loose or worn

Pressure plate

1. Warped pressure plate surface
2. Burned or smeared resin on pressure plate surface

Clutch disc

1. Oil contamination
2. Excessively worn, exploded or damaged
3. Worn or broken torsion springs
4. Worn splines in disc hub

Flywheel

1. Flywheel surface runout.
2. Burned or smeared resin on flywheel surface

Transaxle input shaft

Worn or damaged splines