Operation CHARM: Car repair manuals for everyone.

Test A: Loss of Coolant

Test A: Loss of Coolant

Possible Causes
- Coolant hoses or tubes
- Hose clamps
- Thermostat O-ring seal or gasket
- Coolant pump O-ring seal or gasket
- Thermostat housing
- Heater control valve (if equipped)
- Radiator
- Transmission fluid cooler (in radiator) (if equipped)
- Pressure relief cap
- Coolant pump leaking from weep hole
- Auxiliary coolant pump (if equipped)
- Heater core
- Heated throttle body or heated throttle body adapter (if equipped)
- Coolant crossover manifold assembly (if equipped)
- Engine gaskets
- Oil cooler (if equipped)
- Degas bottle (if equipped)
- Coolant expansion tank (if equipped)
- Heated positive crankcase ventilation (PCV) (if equipped)
- Fuel pressure regulator coolant bowl (if equipped)
- Cylinder block core plugs
- Cylinder head core plugs (if equipped)
- Block heater (if equipped)

A1:




A2-A7: