|
|
- Coolant hoses or tubes
- Hose clamps
- Coolant pump O-ring seal
- Thermostat O-ring seal
- Thermostat housing
- Radiator
- Transmission fluid cooler (in radiator) (may leak internally or externally)
- Coolant expansion tank
- Pressure relief cap
- Coolant pump leaking from weep hole
- Heater core
- Coolant crossover manifold assembly
- Engine gaskets (may leak internally or externally)
- Oil filter adapter (may leak internally or externally)
- 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 the A/C condenser/radiator
- Internal engine coolant leak
- Coolant condition/concentration
- Accessory drive components
- Non-OEM engine enhancement components
- Cooling fan
- Cooling fan clutch
- Radiator
- Thermostat
- Engine Coolant Temperature (ECT) indicator system (gauge)
- Cylinder Head Temperature (CHT) sensor
- Coolant pump
- Coolant flow restriction
|
|
- The engine does not reach normal operating temperature
|
- Low coolant level
- Thermostat
- Cooling fan clutch always engaged
- ECT
indicator system (gauge)
- CHT
sensor
|
|
- The block heater does not operate correctly
|
|
- CHECK continuity in all 3 power cable circuits. If any circuit measures greater than 5 ohms, INSTALL a new power cable.
|
|
|
- CHECK the resistance of the block heater. If the resistance does not measure between 12.5 and 17.0 ohms, INSTALL a new block heater.
|
- The electronically controlled fan clutch does not operate correctly
|
|
|
- Noisy cooling fan operation
|
|
|