Jeep Cherokee

 Service Manual

Cooling system » Diagnosis and testing
Radiator coolant flow check

The following procedure will determine if coolant is flowing through the cooling system.

If engine is cold, idle engine until normal operating temperature is reached. Then feel the upper radiator hose. If hose is hot, the thermostat is open and water is circulating through cooling system.

On-board diagnostics (OBD)

Accessory drive belt diagnosis

Preliminary checks

Radiator coolant flow check

Cooling system-testing for leaks

Viscous fan drive

Electric cooling fan

Radiator cap-to-filler neck seal-pressure relief check

Radiator cap-pressure testing

Coolant-low level aeration

Deaeration