Symptom Tree t024
| Cause | Correction |
|---|
|
Coolant temperature gauge is malfunctioning |
Test the temperature gauge. Repair or replace the gauge, if necessary. Refer to Procedure 008-004 and the OEM service manual. |
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|
Engine is operating at low ambient temperature |
Check the winterfront, shutters, and under-the-hood air. Use under-the-hood intake air in cold weather. Refer to Cold Weather Operation, Bulletin 3387266, and the Operation and Maintenance Manual, B5.9G, B5.9LPG, B Gas Plus, and B LPG Plus Engines, Bulletin 3666112. |
|
|
Coolant temperature sensor is malfunctioning |
Use an electronic service tool to check the coolant temperature sensor. Refer to Procedure 008-019. |
|
|
Fan drive or fan controls are malfunctioning |
Check the fan drive and controls. Refer to Procedure 008-026. |
|
|
Thermostat is not correct or is malfunctioning |
Check the thermostat for the correct part number and for correct operation. Refer to Procedure 008-013. |
|
|
Coolant flow through the radiator is not correct |
Check for correct coolant flow through the radiator. Refer to Procedure 008-042. |
