True or false: The load manager should be turned off when idling for extended periods of time.

The statement that the load manager should be turned off when idling for extended periods of time is false. The load manager's function is to optimize engine performance by managing the electrical load on the system. When the vehicle is idling for long durations, especially under normal circumstances, it's generally designed to handle that load without needing to be turned off. Disabling the load manager during idling could lead to increased fuel consumption and potential inefficiencies in engine operation.

In situations of high temperature or when the engine is overheating, there may be a consideration for load management, but this is specific to those conditions rather than a blanket rule. Therefore, it is advisable to leave the load manager operational during typical idling to ensure the system remains efficient and effective.