Contents Wiring diagrams Section: Cooling System (Mechanical) All sections

Engine Cooling System: Specifications Ford Ranger II

Cooling System (Mechanical) 5 illustrations ~509 words

GENERAL SPECIFICATIONS

ItemSpecification
Fan Clutch Test Specifications
Minimum speed requirement - 2.3L1,000 RPM
Minimum speed requirement - 3.0L and 4.0L1,500 RPM
Maximum speed requirement - 2.3L and 4.0L2,000 RPM
Maximum speed requirement - 3.0L2,200 RPM
Pressure Test Specification
Cooling system138 kPa (20 psi)
Pressure relief cap89-124 kPa (13-18 psi)
Thermostat Opening Temperature
Fully open97-106°C (206.6-222.8°F)
Starts to open90°C (194°F)

GENERAL SPECIFICATIONS

TORQUE SPECIFICATIONS

DescriptionNm
A/C compressor mounting bracket bolts - 3.0L (front)51
A/C compressor mounting bracket stud bolts - 3.0L (side)47
Accessory drive belt tensioner bolt27
Air deflector-to-frame bolts15
Battery cable bracket-to-A/C compressor bracket nut - 3.0L10
Block heater screw2
Catalytic converter-to-muffler bolts40
Coolant expansion tank-to-body nuts and bolts - 3.0L and 4.0L7
Coolant outlet pipe bolts - front25
Coolant outlet pipe bolts - rear10
Coolant pump pulley bolts - 2.3L20
Coolant pump pulley bolts - 3.0L and 4.0L25
Coolant pump-to-cylinder block bolts - 2.3L and 4.0L10
Coolant pump-to-cylinder block bolts and stud bolt - 3.0L a
Cooling fan clutch-to-cooling fan pulley - 2.3L55
Cooling fan clutch-to-coolant pump pulley - 3.0L54
Cooling fan clutch-to-coolant pump pulley - 4.0L55
Cooling fan shroud-to-radiator bolts - 2.3L7
Cooling fan shroud-to-radiator bolts - 3.0L and 4.0L6
Cooling fan-to-clutch bolts - 2.3L9
Cooling fan-to-clutch bolts - 3.0L and 4.0L7
Degas bottle nut and bolt - 2.3L7
Draincock2
EGR valve coolant hose bracket nut20
Electric cooling fan bracket-to-shroud bolts8
Electric cooling fan-to-shroud bolts - 2.3L8
Engine coolant temperature sender unit - 2.3L21
Engine coolant temperature sender unit - 3.0L17
Exhaust manifold-to-catalytic converter bolts40
Exhaust manifold-to-EGR valve tube - 4.0L34
Ignition coil bracket bolts8
Intake manifold bolts10
Oil level indicator tube-to-front coolant outlet tube bolt10
Power steering fluid reservoir bolts6
Radiator-to-radiator support bolts7
Speed control servo mounting bolt11
Thermostat housing bolts - 2.3L10
Thermostat housing bolts - 4.0L11
Thermostat outlet connection bolts - 3.0L25
Thermostat outlet connection bolts - 4.0L10
Transmission cooler tube-to-radiator fitting - 2.3L27
Transmission cooler tube-to-radiator fitting - 3.0L and 4.0L25
Transmission crossmember-to-frame rail bolts99
Transmission mount-to-crossmember nuts99

TORQUE SPECIFICATIONS

a Refer to the procedure.

CAUTIONThe engine cooling system is filled with Motorcraft Premium Gold Engine Coolant. Always fill the cooling system with the same type coolant that is present in the system. Do not mix coolant types.

Note. If Cooling System Stop Leak Pellets are used, darkening of the Motorcraft Premium Coolant from yellow to golden tan will occur.

The engine cooling system consists of the following

  1. Block heater (optional)
  2. Engine coolant temperature (ECT) sensor (3.0L and 4.0L engines)
  3. Cylinder head temperature (CHT) sensor (2.3L engines)
  4. Fan blade
  5. Fan clutch
  6. Fan shroud
  7. Fan shroud with electric fan (2.3L engines with A/C)
  8. Radiator
  9. Pressure cap
  10. Radiator coolant recovery reservoir (3.0L and 4.0L engines)
  11. Degas bottle (2.3L engines)
  12. Thermostat
  13. Coolant pump
  14. Radiator draincock

The radiator allows excess engine heat to be transferred to the air.

Radiator tanks cannot be repaired, install as an assembly.

For the 2.3L engine, the thermostat and housing must be serviced as an assembly.

The 2.3L engine uses a "cold side" thermostat. This means the thermostat is located at the lower radiator hose connection to the engine, where coolant enters the engine after being cooled by the radiator. During initial warm-up, the cooler coolant from the radiator will quickly close the thermostat after the warm coolant in the engine opens the thermostat slightly. The thermostat will open and close several times before the coolant coming from the radiator is warm enough to allow the thermostat to remain open. The engine must run much longer than a vehicle with a "hot side" thermostat before the thermostat remains fully opened.

The 3.0L and 4.0L engines use a typical "Hot Side" thermostat.

Engine coolant provides freeze protection, boil protection, cooling efficiency and corrosion protection to the engine and cooling components. In order to obtain these protections, the engine coolant must be maintained at the correct concentration and fluid level in the degas bottle or coolant expansion tank.

When adding engine coolant, use a 50/50 mixture of engine coolant and distilled water.

To maintain the integrity of the coolant and the cooling system

  1. Add Motorcraft Premium Gold Engine Coolant. Do not mix coolant types.
  2. Do not add or mix Motorcraft Specialty Orange Engine Coolant. Mixing coolants may degrade the coolant's corrosion protection.
  3. Do not add alcohol, methanol, brine or any engine coolants mixed with alcohol or methanol antifreeze. These can cause engine damage from overheating or freezing.
  4. Do not mix with recycled coolant. Use of such coolants may harm the engine and cooling system components.

The optional block heater

  1. electrical heating element is installed in the core plug opening. uses a standard 110V electrical supply
  2. keeps the engine coolant warm during cold weather.

Note. Black arrows indicate hot, white arrows indicate cold.

Scheme 1

Scheme 1
ItemPart NumberDescription
18101Pressure relief cap
28A080Degas bottle
38W005Radiator vent hose
48005Radiator
58260Upper radiator hose
68W005Engine vent hose
78594Front coolant outlet pipe
86049Cylinder head
96083Cylinder head gasket
106010Cylinder block
118501Coolant pump
128575Thermostat housing
138286Lower radiator hose
148A582Coolant bypass hose
158K556Rear coolant outlet pipe
1618C266Heater hose assembly (A/C equipped vehicles only)
179424Intake manifold
188K556Heated PCV fitting
1918D334Heater hose assembly (non A/C equipped vehicles only)
2018B539Heater core
219Y439EGR valve coolant outlet hose
229D475EGR valve
238C633Degas hose

Note. Black arrows indicate hot, white arrows indicate cold.

Scheme 2

Scheme 2
ItemPart NumberDescription
18005Radiator
28260Upper radiator hose
38286Lower radiator hose
48501Coolant pump
5N808344Elbow
618599Elbow
712A648Engine coolant temperature (ECT) sensor
818C266Heater hose assembly
98592Thermostat outlet housing
108575Thermostat
119K451Lower intake manifold
126059Engine front cover
136049RH cylinder head
146010Cylinder block
156051LH cylinder head gasket
166049LH cylinder head
1718B539Heater core

Note. Black arrows indicate hot, white arrows indicate cold.

Scheme 3

Scheme 3
ItemPart NumberDescription
118C266Heater hose assembly
217B613Coolant expansion tank
38075Radiator overflow hose
48005Radiator
58286Lower radiator hose
68501Coolant pump
78548Coolant bypass hose
89K798Thermostat housing
98620Upper radiator hose
1018698Heater tube assembly
1118472Heater hose
126758Heated PCV hose fitting
1318D334Heater hose assembly
1418B439Heater core
156049RH cylinder head
166010Cylinder block
176051LH cylinder head gasket
186010LH cylinder head

Special Tools Illustration Tool Name Tool Number 73III Automotive Meter 105-R0057 or equivalent Battery/Antifreeze Tester 014-R1060 or equivalent Pressure Test Kit 014-R1072 or equivalent Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware or equivalent scan tool

Scheme 4

Scheme 4: Engine Cooling

Scheme 5

Scheme 5
ItemSpecification
Motorcraft Premium Gold Engine Coolant with Bittering Agent (bittered in US only) VC-7-B (US); CVC-7-A (Canada); or equivalent (yellow color)WSS-M97B51-A1

Material