Kernel task 300% CPU and sleep problem

MacBook Air 13-inch, Early 2014, ПО  OS X 10.9.5 (13F34)
The system seems overloaded, big delays on keyboard typing. Activity Monitor shows kernel_task consume 300-400% of CPU, but otherwise system does not look as overloaded - laptop is not hot
and fan silent.
Also there is problems with system wakeup. It is impossible to wakeup system after closing the lid for more then 20 seconds, it turns off.
I think you have to add battery info.
Информация о модели:
  Серийный номер: D8641061KJ3F90KAU
  Производитель: SMP
  Имя устройства: bq20z451
  Pack Lot Code: 0
  PCB Lot Code: 0
  Версия прошивки: 511
  Версия аппаратного обеспечения: 000a
  Версия батареи: 1200
  Информация о заряде:
  Оставшийся заряд (мА·ч): 7282
  Полностью заряжен: Да
  Идет зарядка: Нет
  Полная емкость заряда (мА·ч): 7282
  Информация о степени исправности:
  Количество циклов перезарядки: 43
  Состояние: Обычный
  Установлен аккумулятор: Да
  Ток (мА): 0
  Напряжение (мВ): 8539

In safe mode the problem does not go away. Actual overheating the computer does not have, it is cold. The problem is with the power on and without. All programs are not included in the basic package, I removed. I also tried to reinstall the OS with the protection of personal data. The problem exist. The problem may be due to high humidity? I live in Sri Lanka. And there is a problem with sleep mode.
"Also there is problems with system wakeup. It is impossible to wakeup system after closing the lid for more then 20 seconds, it turns off."

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