Engine Cooling Symptom Diagnosis
POSSIBLE CAUSES
| Condition | Possible Cause | Action |
|---|---|---|
| Engine overheats (Radiator fan operates) | Loose or broken water pump belt | Adjust or replace . |
| Not enough coolant | Check coolant level and add as necessary . | |
| Faulty thermostat | Replace . | |
| Faulty water pump | Replace . | |
| Dirty or bent radiator fins | Clean or remedy . | |
| Coolant leakage on cooling system | Repair . | |
| Clogged radiator | Check and replace radiator as necessary . | |
| Faulty radiator cap | Replace . | |
| Dragging brakes | Adjust brake . | |
| Slipping clutch | Adjust or replace . | |
| Poor charge battery | Check and replace as necessary . | |
| Poor generation generator | Check and repair . | |
| ECT sensor faulty | Check and replace as necessary . | |
| Radiator fan motor faulty | Check and replace as necessary . | |
| ECM faulty | Check and replace as necessary . | |
| Wiring or grounding faulty | Repair as necessary . | |
| Equipped with too much electric load part (s) | Dismount . | |
| Engine overheats (Radiator fan does not operate) | Fuse blown | Check 30 A fuse of relay/fuse box and check for short circuit to ground . |
| Radiator cooling fan relay faulty | Check and replace as necessary . | |
| ECT sensor faulty | Check and replace as necessary . | |
| Radiator cooling fan motor faulty | Check and replace as necessary . | |
| Wiring or grounding faulty | Repair as necessary . | |
| ECM faulty | Check and replace as necessary . |