Step | Action | Value(s) | Yes | No | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DEFINITION: Hot light on, hissing, rumble, steam, or power loss. | ||||||||||||||
1 | Check the coolant level in the coolant recovery reservoir. Is the coolant to the proper level? | -- | ||||||||||||
2 |
Are there any coolant leaks? | -- | ||||||||||||
3 | Check for a loose accessory drive belt. Is the drive belt loose? | -- | ||||||||||||
4 | Repair any coolant leaks as necessary. Does the engine still overheat? | -- | System OK | |||||||||||
5 |
Are there any coolant leaks? | -- | ||||||||||||
6 | Check the condition of the drive belt. Does the engine still overheat? | -- | System OK | |||||||||||
7 | Check the condition of the radiator hoses. Are the hoses in good condition? | -- | ||||||||||||
8 | Replace the hose(s) as necessary. Refer to Radiator Hose Replacement . Does the engine still overheat? | -- | System OK | |||||||||||
9 | Check the temperature of the thermostat. Refer to Thermostat Diagnosis . Is the temperature level of the thermostat normal? | -- | ||||||||||||
10 | Replace the thermostat. Refer to Engine Coolant Thermostat Replacement . Does the engine still overheat? | -- | System OK | |||||||||||
11 | Check for a clogged radiator. Refer to Flushing . Are the radiator coolant passages normal? | -- | -- | |||||||||||
12 | Check for a blockage in the engine block coolant passages. Refer to Flushing . Are the engine block cooling passages normal? | -- | -- | |||||||||||
13 | Check if there are any combustion chamber gases leaking into the cooling system. Are there any bubbles present in the coolant? | -- | ||||||||||||
14 | Repair as necessary. Refer to Engine Block Clean and Inspect in Engine Mechanical. Does the engine still overheat? | -- | System OK | |||||||||||
15 | Check the coolant pump for a low pumping volume. Refer to Cooling System Diagnosis . Is the pumping volume of the pump normal? | -- | ||||||||||||
16 | Replace the coolant pump. Refer to Water Pump Replacement . Does the engine still overheat? | -- | System OK | |||||||||||
17 | Check the radiator fan blade clutch. Refer to Fan Clutch Diagnosis . Is the fan blade clutch operating normally? | -- | ||||||||||||
18 | Replace the fan blade clutch. Refer to Perform a Diagnostic on the Transfer Case Control Module . Does the engine still overheat | -- | System OK | |||||||||||
19 | Other factors, such as the following, may be causing the engine to overheat:
Correct or repair as necessary. Does the engine still overheat? | -- | -- | System OK | ||||||||||
