1396

UnclassifiedCooling

What This Code Means

High exhaust temperatures; Power loss; Excessive fan usage; Reduction in fuel economy; Fan failure; Potential engine damage; Inlet manifold air temperature exceeding 65°C (150°F)

Possible Causes

  • Airflow restriction from devices mounted in front of radiators
  • Interrupted airflow on the fan blades

Suggested Actions

  1. 1Avoid using airflow restriction devices mounted in front of radiators
  2. 2Ensure any airflow restriction device used has a permanent, centered opening directly in line with the fan hub
  3. 3Ensure the airflow restriction device has a minimum opening dimension of at least 770 cm² (120 in²)
  4. 4Install a warning device for the inlet manifold temperature set at 65°C (150°F)
  5. 5Install an inlet air temperature gauge

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