Unlike interference engines where pistons and valves collide directly, the 1997 Plymouth Breeze's engine (likely a 2.0L or 2.4L) is an interference engine. This means that when the timing belt breaks, the pistons can collide with the valves, bending or breaking them. This can also damage the cylinder head, potentially requiring a very expensive repair or even a replacement engine.
The extent of the damage depends on the position of the pistons and valves at the moment of the break. Sometimes, only a few valves are bent. Other times, the damage is catastrophic and requires a complete engine rebuild or replacement.
In short, a broken timing belt in a 1997 Plymouth Breeze is a serious issue that will almost certainly result in costly repairs. The motor will not run until the damage is addressed.
