Engine Fails To Reach Normal Operating Temperature

Engine Fails To Reach Normal Operating Temperature

1. Verify that the cooling system is properly filled. Refer to Cooling System Draining and Filling (Static Fill With HP5) (Service and Repair)Cooling System Draining and Filling (Static Fill Without HP5) (Service and Repair)Cooling System Draining and Filling (GE 47716 Fill With HP5) (Service and Repair)Cooling System Draining and Filling (GE 47716 Fill Without HP5) (Service and Repair).
2. If the complaint is a low temperature reading, check the temperature gage for proper operation. Connect a scan tool to the vehicle and read the system temperature. Compare this reading to the temperature. Replace the gauge or switch if necessary.
3. Refer to Heating Performance Diagnostic (Heating Performance Diagnostic) if the complaint is no heat from the HVAC system.
4. Verify proper thermostat operation. Refer to Thermostat Diagnosis (Component Tests and General Diagnostics).