Volkswagen Jetta 2000, Jetta 1999, Golf 1999, Golf 2000, GTI 1999 Engineering Manual
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Cooling system components, removing and installing
Coolant fans (V7 and V35), checking
Coolant feed pump (V51), checking
Coolant hoses, connection diagram
Coolant pump, removing and installing
Coolant, draining and filling
Cooling system components, body side
Cooling system components, engine side
Radiator, removing and installing
Thermostat housing, disassembling and assembling
Volkswagen Jetta, Golf, GTI 1999, 2000
2.8 Liter VR6 2V Engine Mechanical, Engine Code(s): AFP
19 Engine-Cooling system (Page GR-19)
Volkswagen Jetta, Golf, GTI 1999, 2000
2.8 Liter VR6 2V Engine Mechanical, Engine Code(s): AFP
Cooling system components, removing and installing (Page 19-1)
Notes:
The cooling system is under pressure when the engine is warm. Release pressure
before making repairs.
The hose connections are fastened with spring band clips and rapid action hose
couplings. Only use spring band clips when making repairs.
The pliers V.A.G 1921 are recommended for assembling the spring band clips.
While installing, lay the hoses somewhat slack while being careful that they do not
come in contact with other components (pay attention to the markings on the
connector and hose).
Test whether the cooling system is seal-tight using the test instrument V.A.G 1274 and the
adapters V.A.G 1274/8 and V.A.G 1274/9.
Cooling system components, body side page 19-2.
Cooling system components, engine side page 19-7.
Thermostat housing, disassembling and assembling page 19-13.
Volkswagen Jetta, Golf, GTI 1999, 2000
2.8 Liter VR6 2V Engine Mechanical, Engine Code(s): AFP
Cooling system components, removing and installing (Page 19-2)
Cooling system components, body side
Main radiator
Auxiliary radiator page 19-5
1 - Radiator
Removing and installing page 19-19
After replacement, refill completely with new coolant
2 - O-Ring
Replace if damaged
3 - Upper coolant hose
Fastened to radiator with rapid action hose coupling
Ensure tight fit
Coolant hoses, connection diagram page 19-11
4 - Air scoop
5 - 10 Nm
6 - Coolant fan (V7)
Volkswagen Jetta, Golf, GTI 1999, 2000
2.8 Liter VR6 2V Engine Mechanical, Engine Code(s): AFP
Cooling system components, removing and installing (Page 19-3)
7 - Fan bracket
8 - Retaining clamp
Check for tight fit
9 - Connector
10 - Coolant fan (V35)
11 - Bracket
For fan connector
12 - Lower coolant hose
Fastened to radiator with rapid action hose coupling
Ensure tight fit
Coolant hoses, connection diagram page 19-11
13 - O-Ring
Replace
Volkswagen Jetta, Golf, GTI 1999, 2000
2.8 Liter VR6 2V Engine Mechanical, Engine Code(s): AFP
Cooling system components, removing and installing (Page 19-4)
14 - Thermo switch (F18), 35 Nm
For electric fan
Switching temperatures, 1st stage:
On: 92-97 C
Off: 84-91 C
Switching temperatures, 2nd stage:
On: 99-105 C
Off: 91-98 C
15 - Bracket
For radiator
Observe install position
16 - 15 Nm
Volkswagen Jetta, Golf, GTI 1999, 2000
2.8 Liter VR6 2V Engine Mechanical, Engine Code(s): AFP
Cooling system components, removing and installing (Page 19-5)
Auxiliary radiator
1 - 10 Nm
2 - Retaining frame
For auxiliary radiator
3 - Spacer sleeve
4 - Rubber disk
5 - Lower bolt, 10 Nm
6 - Air scoop
Clip into retaining frame
7 - Auxiliary radiator
For vehicles in hot climates
Removing and installing page 19-19
After replacement, refill completely with fresh coolant
8 - 5 Nm
Volkswagen Jetta, Golf, GTI 1999, 2000
2.8 Liter VR6 2V Engine Mechanical, Engine Code(s): AFP
Cooling system components, removing and installing (Page 19-6)
9 - To Y-branch of upper coolant hose
Coolant hoses, connection diagram page 19-11
10 - To Y-branch of lower coolant hose
Coolant hoses, connection diagram page 19-11
11 - Bracket
For auxiliary radiator
Volkswagen Jetta, Golf, GTI 1999, 2000
2.8 Liter VR6 2V Engine Mechanical, Engine Code(s): AFP
Cooling system components, removing and installing (Page 19-7)
Cooling system components, engine side
1 - Pressure cap
Check with V.A.G 1274 test instrument and V.A.G 1274/9 adapter
Test pressure 1.4-1.6 bar
2 - O-Ring
Replace if damaged
3 - Coolant recovery bottle
Check for leaks in cooling system using V.A.G 1274 test instrument and
V.A.G1274/8 adapter
4 - 10 Nm
5 - Upper coolant pipe
Clipped into the bulkhead
Coolant hoses, connection diagram page 19-11
Volkswagen Jetta, Golf, GTI 1999, 2000
2.8 Liter VR6 2V Engine Mechanical, Engine Code(s): AFP
Cooling system components, removing and installing (Page 19-8)
6 - To heat exchanger
Coolant hoses, connection diagram page 19-11
7 - Throttle valve control unit (J338)
Heated by coolant
8 - To upper coolant hose
Coolant hoses, connection diagram page 19-11
9 - To upper radiator
Coolant hoses, connection diagram page 19-11
10 - Gasket
Replace
11 - To lower radiator
Coolant hoses, connection diagram page 19-11
Volkswagen Jetta, Golf, GTI 1999, 2000
2.8 Liter VR6 2V Engine Mechanical, Engine Code(s): AFP
Cooling system components, removing and installing (Page 19-9)
12 - Thermostat housing
Disassembling and assembling page 19-13
13 - Coolant feed pump (V51)
Check page 19-24
14 - From heat exchanger
Coolant hoses, connection diagram page 19-11
15 - 25 Nm
16 - Oil cooler
Coat contact surfaces outside of sealing ring with AMV 188 001 02
Ensure free movement among surrounding components
See Note page 17-1
17 - Screw plug
18 - Coolant pipe
Coolant hoses, connection diagram page 19-11
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