Vauxhall Chevette
Cooling trouble shooter |
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| FAULT |
CAUSE |
CURE |
| Loss of coolant |
1. Leaks. |
1. Locate and repair. |
| 2. Damaged radiator or heater matrix. |
2. Repair or replace radiator or matrix. |
| 3. Damaged cylinder head gasket. |
3. Replace gasket. Check engine oil and refill as necessary. |
| 4. Cracked cylinder block. |
4. Replace cylinder block. Check engine oil in crank-case for mixing with water. |
| 5. Cracked cylinder head. |
5. Replace cylinder head. |
| 6. Loose cylinder head nuts. |
6. Tighten cylinder head nuts. |
| Poor circulation |
1. Restriction in system |
1. Check hoses for kinking. Clear the system of rust and sludge. |
| 2. Insufficient coolant. |
2. Replenish. |
| 3. Inoperative water pump. |
3. Replace water pump. |
| 4. Loose fan belt. |
4. Adjust/replace belt. |
| 5. Thermostat not opening. |
5. Replace thermostat. |
| Corrosion |
1. Insufficient anti-freeze. |
1. Add anti-freeze. |
| 2. Infrequent flushing and changing of coolant. |
2. Flush thoroughly at least every two years. |
| Overheating |
1. Inoperative thermostat. |
1. Replace thermostat. |
| 2. Radiator fins obstructed. |
2. Clean fins. |
| 3. Incorrect engine tune. |
3. Tune engine. |
| 4. Inoperative water pump. |
4. Replace. |
| 5. Loose fan belt. |
5. Adjust tension. |
| 6. Restricted radiator. |
6. Flush radiator. |
| 7. Inaccurate temperature gauge. |
7. Replace temperature gauge. |
| 8. Faulty sender unit. |
8. Replace sender unit. |
| Overcooling |
1. Inoperative thermostat. |
1. Replace thermostat. |
| 2. Faulty temperature gauge. |
2. Check gauge. |
| 3. Faulty sender unit. |
3. Check sender unit. |
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