Coolant Temperature Above Normal - Sudden Overheat
Cause Corrections
----------
Electronic Fault Codes Active - Coolant
Temperature Sensor
OK
f
Refer to the N14 CELECT™ System
Troubleshooting and Repair Manual,
Bulletin No. 3810469.
----------
Coolant Level Low
OK
f
Inspect for external leaks on engine and
radiator and make repairs. Add coolant.
Refer to Procedure 1-09.
----------
Radiator Hose Collapsed, Restricted,
or Leaking
OK
f
Inspect hoses. Refer to Procedure 1-12.
----------
Fan Drive Belt or Water Pump Belt Broken
OK
f
Replace belt if broken. Refer to Proce-
dures 1-21 and 1-25.
----------
Radiator Cap Incorrect or Malfunction-
ing. Cap Rate Pressure Too Low
OK
f
Check the radiator pressure cap. Refer
to Procedure 1-15.
----------
* Radiator Shutters Are Not Opening
Completely or Cold Weather Radiator Cover
(Winterfront) Closed. Shutterstat Setting
Wrong
OK
f
Inspect the shutters. Repair or replace if
necessary. Open winterfront (must maintain
120 square inch opening at all times). Check
shutterstat setting. Refer to Procedure 1-17.
----------
Install CompuchekT if Available
OK
f
Perform cooling system test. Refer to
CompuchekT Fitting Installation Manual,
Bulletin No. 3810352.
(Continued)
* If CompuchekT was used, this cause has already been tested.
Troubleshooting Symptoms Charts SectionT-Troubleshooting
N14Page T-18
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