21. Overheating
1. Not enough coolant in the system (Chapter 1).
2. Water pump drive belt is torn or incorrectly installed (Chapter 1).
3. The radiator core is blocked or the surface of the radiator is dirty and damaged (chapter 3).
4. Faulty thermostat (chapter 3).
5. Broken or cracked fan blades (chapter 3).
6. Sealed radiator cap not providing proper pressure. Check cover.
7. The ignition timing is set incorrectly.
22. Hypothermia
Faulty thermostat (chapter 3).
23. External coolant leaks
1. Aging or destruction of hoses or loosening of clamps. Replace hoses and/or replace hose clamps (Chapter 1).
2. Defects in the operation of the water pump. In this case, the coolant will seep through the pump housing (chapter 3).
3. Leak from the radiator cap or expansion tank (chapter 3).
4. Leak from engine drain plug (Chapter 1) or from the plug of the engine water jacket (chapter 2).
24. Internal coolant leaks
Note: Internal coolant leaks can 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. Poor 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 the 1986-1988 TAURUS and 1987-1988 SABLE is a cylinder head gasket leak, resulting in a mysterious loss of coolant. If the car has a four-cylinder engine. Installing a new cylinder head gasket will save you. For a vehicle with a six-cylinder V-twin engine, a new gasket and bolts must be applied
4. Faulty sealed radiator cap Check the pressure under the cap.
26. Weak coolant circulation
1. Low power water pump.
2. Narrowing of the flow area in the cooling system. Drain, flush and refill system (Chapter 1). Remove the radiator if necessary (chapter 3) and wash it on the back.
3. Water pump drive belt is defective or incorrectly installed (Chapter 1).
4. Burnt thermostat (chapter 3).
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