Possible Sources
- Coolant hoses or tubes
- Hose clamps
- Thermostat housing
- Thermostat housing O-ring seals
- Coolant pump gasket
- Radiator
- Pressure relief cap
- Coolant pump
- Oil cooler (may leak internally or externally) (if equipped)
- Heater core
- Engine gaskets (may leak internally or externally)
- Degas bottle
- Cylinder block core plugs
- Cylinder head core plugs
- Block heater (if equipped)
- Low coolant level
- External engine coolant leak
- Airlock in system
- Pressure relief cap installation
- Restricted airflow through A/C condenser/radiator
- Internal engine coolant leak
- Coolant condition/concentration
- Non-OEM engine enhancement components
- Electric cooling fan
- CHT sensor
- Radiator
- Thermostat
- Temperature gauge
- Coolant pump
- Coolant flow restriction
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P1285 | Cylinder Head Overtemperature Condition | Sets in the PCM when an engine overheat condition was sensed by the CHT sensor. |
| P1299 | Cylinder Head Overtemperature Protection Active | Sets in the PCM when an engine overheat condition was detected by the CHT sensor. A failure mode effects management strategy called fail-safe cooling was activated to cool the engine |
DIAGNOSTIC TROUBLE CODE (DTC) FAULT TRIGGER CONDITIONS
- Low coolant level
- Thermostat
- Temperature gauge
- CHT Sensor
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0125 | Insufficient Coolant Temp for Closed Loop Fuel Control | Sets in the PCM when the CHT sensor has not achieved the required temperature level to enter closed loop operating conditions within a specified amount of time after starting the engine. |
| P0128 | Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature) | Sets in the PCM when the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine. |
DIAGNOSTIC TROUBLE CODE (DTC) FAULT TRIGGER CONDITIONS
Thermostat
Install a new thermostat only after at least one of the following tests and checks have been carried out
- Pinpoint Test B or C
- Thermostat Visual Inspection
Degas Bottle
| Hose Clamp(s) | Hose Clamp Remover/Installer |
SPECIAL TOOL(S) / GENERAL EQUIPMENT
| Name | Specification |
|---|---|
| Motorcraft® - Orange Antifreeze/Coolant Prediluted VC-3DIL-B | WSS-M97B44-D2 |
MATERIALS SPECIFICATIONS
Coolant Pump
| Trolley Jack |
SPECIAL TOOL(S) / GENERAL EQUIPMENT
| Name | Specification |
|---|---|
| Motorcraft® - Orange Antifreeze/Coolant Prediluted VC-3DIL-B | WSS-M97B44-D2 |
| Motorcraft® Orange Antifreeze/Coolant Concentrated VC-3-B | WSS-M97B44-D |
MATERIALS SPECIFICATIONS
Scheme 35
Scheme 36
Scheme 37
Scheme 38
Scheme 39
Scheme 40
Scheme 41
Scheme 42
Scheme 43
- Refer to: «ENGINE COOLING SYSTEM HEALTH AND SAFETY PRECAUTIONS»(ref-515929-S15073665342012120400000) .
- Refer to: «Cooling System Draining, Filling and Bleeding»(ref-515984-S18220348442012120400000) . Refer to: «Cooling System Draining and Vacuum Filling»(ref-515984-S15674360012012120400000) .
- Position aside.
- General Equipment: Trolley Jack
- Loosen 2 turns.
- Position aside.
Scheme 44
Scheme 45
Scheme 46
- Material: Motorcraft® Orange Antifreeze/Coolant Concentrated / VC-3-B (WSS-M97B44-D) Material: Motorcraft® - Orange Antifreeze/Coolant Prediluted / VC-3DIL-B (WSS-M97B44-D2) Coolant Pump Bolts Tightening Torque: 10 Nm
- Finger tight.
- Torque: 25 Nm
- Torque: 20 Nm
- General Equipment: Trolley Jack
- Torque: 90 Nm
- Refer to: «Cooling System Draining, Filling and Bleeding»(ref-515984-S18220348442012120400000) . Refer to: «Cooling System Draining and Vacuum Filling»(ref-515984-S15674360012012120400000) .
Thermostat Housing
| Hose Clamp Remover/Installer |
SPECIAL TOOL(S) / GENERAL EQUIPMENT