Step | Action | Values | Yes | No |
|---|---|---|---|---|
DEFINITION: The engine temperature lamp comes on and stays on, or temperature gauge shows hot, or coolant overflows from the surge tank onto the ground while the engine is running. | ||||
1 | Check for a loss of coolant. Refer to Loss of Coolant . Is there a loss of coolant? | -- | ||
2 | Fill the system to the specified level. Refer to Cooling System Draining and Filling . Does the engine still overheat? | -- | System OK | |
3 | Check for kinked or pinched surge tank hoses, especially at the radiator. Are any surge tank hoses kinked or pinched? | -- | ||
4 |
Does the engine still overheat? | -- | System OK | |
5 | Check for loose, missing or damaged radiator air seals or deflectors. Are there any loose, missing or damaged radiator air seals or deflectors? | -- | ||
6 | Repair or replace any loose, missing or damaged radiator air seals or deflectors. Refer to Radiator Air Baffle Assemblies and Deflectors . the engine still overheat? | -- | System OK | |
7 | Check the coolant concentration. Does the coolant concentration test correctly? | -- | ||
8 | Replace the coolant if necessary. Refer to Cooling System Draining and Filling . Does the engine still overheat? | -- | System OK | |
9 |
Important: Use the correct pressure cap. Check the system for loss of pressure. Refer to Cooling System Leak Testing . Is there a loss of pressure? | -- | ||
10 | Repair any leaks as necessary. Does the engine still overheat? | -- | System OK | |
11 | Check for a faulty engine coolant temperature sensor (ECT). Is the engine coolant temperature sensor faulty? | -- | ||
12 | Replace the ECT. Refer to Engine Coolant Temperature Sensor Replacement in Engine Controls - 2.4L. Does the engine still overheat? | -- | System OK | |
13 | Check the radiator for any air flow obstructions or bent fins. Is there any airflow obstruction or bent fins? | -- | ||
14 |
Does the engine still overheat? | -- | System OK | |
15 | Check for any blocked cooling system passages. Are there any blocked cooling system passages? | -- | ||
16 |
Does the engine still overheat? | -- | System OK | |
17 | Check for an inoperative cooling fan. Is the cooling fan inoperative? | -- | ||
18 | Replace the cooling fan. Refer to Engine Cooling Fan Replacement . Does the engine still overheat? | -- | System OK | |
19 | Check for a thermostat that is stuck closed. Is the thermostat stuck closed? | -- | ||
20 | Replace the thermostat. Refer to Engine Coolant Thermostat Replacement . Does the engine still overheat? | -- | System OK | |
21 | Check for a faulty water pump. The impeller blades may be eroded or broken. Is the water pump faulty? | -- | -- | |
22 | Replace the water pump. For the 2.4L engine, refer to Water Pump Replacement . Does the engine still overheat? | -- | -- | System OK |
