Engine Overheat Troubleshooting
WARNING: This page is about a different car, the 2017 Kia Niro. However, it is still accessible from the selected car via links, so may be relevant.
| Inspection | Remedy | |
|---|---|---|
| Visual inspection | Inspect for shortage of coolant in reservoir tank. | Reinspect after replenishing coolant. |
| Inspect for coolant pollution after removing radiator cap.
CAUTION:
Be careful when removing radiator cap from overheated vehicle.
|
Reinspect after replacing coolant. | |
| Inspect for leakage and loose coolant hoses (radiator hose, heater hose, oil cooler hose, etc.). | Reinspect for leakage after reinstalling hoses and clamps. | |
| Inspect for leakage on water inlet fitting mounting part. | Reinspect for leakage after replacing O-ring. | |
| Reinspect for leakage after tightening to the specified torque. | ||
| Inspect drive belt (for normal operation of water pump). | Adjust drive belt tension or replace. | |
| Inspect for leakage on water pump gasket mounting part. | Reinspect for leakage after replacing gasket. | |
| Reinspect for leakage after tightening to the specified torque. | ||
| Inspect for loose coolant temperature sensor, cooling fan connector and pin. | Reinstall loose connector. | |
| Replace relevant part if connector pin is damaged. | ||
Inspect operation status of cooling fan.
Information Will not operate in cold ambient temperature. |
Check mounting status of ground cable. | |
| Diagnostic device | Inspect self-diagnostic code using KDS/GDS. | Check coolant temperature sensor, wiring, connector, etc. |
| Unit inspection | Inspect water pump impeller. | Replace water pump. |
| Inspect for foreign materials and status of thermostat valve. | Inspect unit after removing foreign materials. | |
Inspect for stuck thermostat valve.
NOTE:
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Check valve lift.
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