CUMMINS N14 - Coolant Temperature Above Normal - Sudden Overheat (Continued)

Coolant Temperature Above Normal - Sudden Overheat (Continued)
Cause Corrections
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* Thermostat Incorrect or Malfunctioning
OK
f
Check thermostat. Refer to Procedure 1-32.
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* Air or Combustion Gases in the
Cooling System
OK
f
Check for air or combustion gases in
the cooling system. Refer to Procedure
1-10.
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Vent Line and/or Fill Line Plugged or
Incorrectly Routed From Engine and/or
Radiator
OK
f
Check routing and operation of vent line.
Refer to Procedure 1-14. Refer to the OEM
installation specifications.
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* Water Pump Malfunctioning
Check water pump with CompuchekT
Diagnostic Test. Replace the water pump.
Refer to Procedure 1-27.
* If CompuchekT was used, this cause has already been tested.
SectionT-Troubleshooting Troubleshooting Symptoms Charts
N14 Page T-19