Engine Cooling

SYMPTOM TROUBLESHOOTING CHART - ENGINE COOLING

Symptom Troubleshooting Chart - Engine Cooling
Problem	Possible Cause	Action
Loss of Coolant	Radiator Water pump seal Radiator hoses Heater hoses Heater core Engine gaskets Coolant recovery reservoir bottle	See COOLING SYSTEM PINPOINT TEST 1: LOSS OF COOLANT .
Engine Overheats	Thermostat Water pump Internal engine coolant leak Radiator Heater core Inoperative cooling fan Radiator cap	See COOLING SYSTEM PINPOINT TEST 2: ENGINE OVERHEATS .
Engine Does Not Reach Normal Operating Temperature	Thermostat	See COOLING SYSTEM PINPOINT TEST 3: ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE .
Block Heater Does Not Operate Properly	Block heater cable Block heater	See COOLING SYSTEM PINPOINT TEST 4: BLOCK HEATER DOES NOT OPERATE PROPERLY .