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 | Add the proper coolant. Refer to Notice: When adding coolant, use DEX-COOL® coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner-at 50 000 km (30,000 mi) or 24 months. .Does the engine still overheat? | -- | System OK | |||||||||
3 | Check the radiator for the following:
Correct or repair as necessary. Refer to Radiator Cleaning . Does the engine still overheat? | -- | System OK | |||||||||
4 | Check for a loose drive belt. Is the drive belt loose? | -- | ||||||||||
5 |
Are there any coolant leaks? | -- | ||||||||||
6 | Repair any coolant leaks as necessary. Does the engine still overheat? | -- | System OK | |||||||||
7 | Check the condition of the drive belt. Replace if cracks, glazing, or is out of specification. Refer to Drive Belt Diagnosis in Engine Mechanical. Does the engine still overheat? | -- | System OK | |||||||||
8 | Check the condition of the radiator hoses. Are the hoses in good condition? | -- | ||||||||||
9 | Replace the hose(s) as necessary. Refer to Radiator Hose Replacement . Does the engine still overheat? | -- | System OK | |||||||||
10 | Check the temperature of the thermostat. Refer to Thermostat Diagnosis . Is the temperature level of the thermostat normal? | -- | ||||||||||
11 | Replace the thermostat. Refer to Engine Coolant Thermostat Replacement . Does the engine still overheat? | -- | System OK | |||||||||
12 | Check for a clogged radiator. Refer to Flushing . Are the radiator coolant passages normal? | -- | -- | |||||||||
13 | Check for a blockage in the engine block coolant passages. Refer to Flushing . Are the engine block cooling passages normal? | -- | -- | |||||||||
14 | Check if there are any combustion chamber gases leaking into the cooling system. Refer to Cooling System Leak Testing . Are there any bubbles present in the coolant? | -- | ||||||||||
15 | Repair as necessary. Refer to Engine Block Clean and Inspect in Engine Mechanical. Does the engine still overheat? | -- | System OK | |||||||||
16 | Check the coolant pump for a low pumping volume. Is the pumping volume of the pump normal? | -- | ||||||||||
17 | Replace the coolant pump. Refer to Water Pump Replacement . Does the engine still overheat? | -- | System OK | |||||||||
18 | Check the radiator fan blade clutch. Refer to Fan Clutch Diagnosis . Is the fan blade clutch operating normally? | -- | ||||||||||
19 | Replace the fan blade clutch. Refer to Fan Replacement . Does the engine still overheat? | -- | System OK | |||||||||
20 | 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 | ||||||||
