Normal Operation
WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
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 either external or internal leaks anywhere within the cooling system.
For engine specific information, refer to ENGINE COOLING in the Description and Operation portion of this information.
This pinpoint test is intended to diagnose the following:
- Coolant hoses or tubes
- Hose clamps
- Thermostat O-ring seal
- Coolant pump gasket or O-ring seal
- Thermostat housing
- Radiator
- Transmission fluid cooler (in radiator)
- Pressure relief cap
- Coolant pump leaking from weep hole
- Cylinder block coolant pump hole cover
- Heater core
- Coolant crossover manifold assembly
- Engine gaskets (may leak internally or externally)
- Oil filter adapter (may leak internally or externally)
- Oil cooler (may leak internally or externally)
- Coolant expansion tank
- Degas bottle
- Cylinder block core plugs
- Cylinder head core plugs
- Block heater (if equipped)
- Turbochargers (if equipped)