Contents: 21. Overheating ↳ 22. Hypothermia ↳ 23. External coolant leaks ↳ 24. Internal coolant leaks ↳ 25. Weak cooling ↳ 26. Poor coolant circulation ↳
21. Overheating
1. There is not enough coolant in the system (chapter 1).
2. The water pump drive belt is torn or incorrectly installed (chapter 1).
3. The radiator core is blocked or the radiator surface is dirty and damaged (chapter 3).
4. Thermostat is faulty (chapter 3).
5. Broken or cracked fan blades (chapter 3).
6. The radiator cap is not sealed to provide the required pressure. Check the cap.
7. The ignition timing angle is set incorrectly.
22. Hypothermia
Thermostat is faulty (chapter 3).
23. External coolant leaks
1. Aging or deterioration of hoses or loose clamps. Replace hoses and/or replace clamps on hose connections (chapter 1).
2. Defects in the operation of the water pump. In this case, the coolant will leak through the pump body (chapter 3).
3. Leak from the radiator cap or expansion tank (chapter 3).
4. Leak from the engine drain plug (chapter 1) or from the engine water jacket plug (chapter 2).
24. Internal coolant leaks
Note: Internal coolant leaks may be detected by examining the oil.
1. Leak through the cylinder head gasket. Check the pressure in the cooling system.
2. Crack in the block or cylinder head (chapter 2).
25. Weak cooling
1. There is too much coolant in the system (chapter 1)
2. Lack of coolant (section 15).
3. External or internal leaks.
Note: The problem with TAURUS 1986-1988 and SABLE 1987-1988 is a leaking cylinder head gasket, which causes mysterious coolant losses. If the car has a four-cylinder engine, installing a new model of cylinder head gasket will save you. For a car with a V-6 engine, you should use a new gasket and bolts
4. The radiator cap is faulty. Check the pressure under the cap.
26. Poor coolant circulation
1. Low power of water pump.
2. Narrowing of the flow area in the cooling system. Drain, flush and refill the system (chapter 1). If necessary, remove the radiator (chapter 3) and wash its back side.
3. The water pump drive belt is defective or incorrectly installed (chapter 1).
4. The thermostat is burnt out (chapter 3).
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