PINPOINT TEST A : Loss of Coolant: Notes
Normal Operation and Fault Conditions
The engine cooling system is a closed system providing for coolant expansion and contraction as well as changes in pressure as coolant warms and cools with engine operation. Various gaskets, seals, hoses and clamps contain coolant within the cooling system and keep other fluids and contaminants from entering the cooling system.
Coolant loss can be attributed to external or internal leaks anywhere within the cooling system, including:
- Coolant hoses or tubes
- Hose clamps
- Thermostat housing
- Thermostat housing O-ring seals
- Coolant inlet connection
- Coolant inlet connection O-ring seal
- Coolant inlet pipe
- Coolant inlet pipe 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)
- Turbocharger - 2.0L GTDI or 3.5L GTDI
Refer to Engine Cooling , System Diagram.
NOTE:
The cooling system is filled with Motorcraft® Orange Antifreeze/Coolant. Always fill the cooling system with the manufacturer's specified coolant. If a non-specified coolant has been used the cooling system must be chemically flushed. Refer to Cooling System Flushing . Failure to follow these instructions may damage the engine or cooling system.
NOTE:
Use Motorcraft® Orange Antifreeze/Coolant. Do not mix coolant types. Mixing coolant types degrades the coolant corrosion protection and may damage the engine or cooling system.
NOTE:
During normal vehicle operation, Motorcraft® Orange Antifreeze/Coolant may change color from orange to pink or light red. As long as the engine coolant is clear and uncontaminated, this color change does not indicate the engine coolant has degraded nor does it require the engine coolant to be drained, the system to be flushed, or the engine coolant to be replaced.