What effect does the failure to maintain correct drive belt tension have on an engine?

The failure to maintain correct drive belt tension primarily leads to increased wear on components. When the drive belt is not properly tensioned, it can lead to slippage, excessive vibration, or misalignment of the belt system. This improper functioning can cause various components that the belt drives, such as the alternator, power steering pump, and water pump, to operate inefficiently or fail prematurely.

Over time, the increased friction and wear from these issues can lead to damage not just to the drive belt itself, but also to the driven components. For example, if the water pump is not turning at the correct speed, it can lead to engine overheating, while inadequate charging system performance from an improperly driven alternator may result in battery depletion. Therefore, maintaining the correct tension on the drive belt is crucial for the longevity and efficient operation of the engine's accessories and overall system reliability.