Engine overheats
| Not enough engine coolant. | Add coolant. |
| Radiator core and oil cooler core clogged with dirt or scale. | Clean. |
| Faulty cooling fan. | Repair or replace. |
| Defective cooling fan thermo-switch. | Replace. |
| Clogged water passage. | Clean. |
| Air trapped in the cooling circuit. | Bleed out air. |
| Defective water pump. | Replace. |
| Use of incorrect engine coolant. | Replace. |
| Defective thermostat. | Replace. |
Engine overcools
| Defective cooling fan thermo-switch. | Replace. |
| Extremely cold weather. | Put on the radiator cover. |
| Defective thermostat. | Replace. |