Bad Noises at idle If you have a double-mass flywheel, which many modern cars have, you will probably hear a lot of noise from the transmission when your engine is idling. This can be identified as loud bangs. This will only happen if you have a double mass flywheel on your car model.
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Inconsistent Starting All around the flywheel, there are teeth. These teeth make up the starting ring, and it’s what your starter connects to turn over the engine. Over time these teeth can break, and when the starter tries to engage with these broken teeth, you’ll hear a grinding noise. If the teeth on the flywheel are damaged, the flywheel may have trouble engaging with the starter motor. This could make it difficult or impossible to start the vehicle.
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Cannot Change Gears Sometimes you will have the opposite problem with your gears. Instead of your gears slipping, you won’t be able to change your gears at all. The flywheel would need to be in pretty bad shape for this symptom to occur, and other transmission components may be damaged as well.
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Clutch Chatter (Vibrations) Clutch chatter can come from various problems, including worn clutch discs, pressure plates, or release bearings. However, another potential cause is a warped flywheel. While it’s not the most common cause, it’s definitely something you need to look into.
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