check engine AUDI TT 1998 8N / 1.G AEB ATW Engines Cooling System Components Workshop Manual
[x] Cancel search | Manufacturer: AUDI, Model Year: 1998, Model line: TT, Model: AUDI TT 1998 8N / 1.GPages: 34, PDF Size: 0.54 MB
Page 6 of 34

19-6
 
    
Filling  
Note: 
CAUTION!  -  Remove drain plug from coolant pump (arrow).
The cooling system is filled year-round with frost and corrosion 
protection additives. Until 6/96, G 011 A8 C coolant (green color) was used.From 7/96 on, only G 012 A8 D coolant (red color) is used.Coolants G 011 A8 C and G 012 A8 D CANNOT be mixed. Mixing 
them will cause severe engine damage. Part numbers are for reference only. Always check with your Parts 
department for the latest information. If the fluid in the expansion tank is brown, G012 A8 D has been mixed 
with other coolant. In this case, flush cooling system and change 
coolant. To flush, fill cooling system with clear water and run engine 
for approx. 2 minutes. Flushing the system should remove most of the 
coolant residue. 
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Page 11 of 34

19-10
      
-  Start engine and maintain an engine speed of 
about 2000 RPM for approx. 3 minutes. 
     
-  Allow engine to idle until the lower radiator hose 
is hot.Check coolant level and top up if 
necessary. When engine is at normal operating 
temperature, coolant level must be at max. 
mark; when engine is cold, between min. and 
max. marks. 
     
WARNING! 
     
The cooling system is pressurized when the 
engine is warm. When opening the expansion 
tank, wear gloves and other appropriate 
protection, cover the cap using a cloth, and 
open carefully to relieve system pressure 
slowly. 
     
-  Switch engine off.
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Page 19 of 34

19-17
      
Note:  
     When installing ribbed belt, check for correct 
seating on belt pulley. 
     
- Install V-belt   Page 13
-18
 .
     
-  Fill up with coolant   Page 19
-6 .
     
WARNING! 
     
The cooling system is pressurized when the 
engine is warm. When opening the expansion 
tank, wear gloves and other appropriate 
protection, cover the cap using a cloth, and 
open carefully to relieve system pressure 
slowly. 
     
CAUTION! 
     
Be sure the ignition is switched OFF. Failure 
to do so may damage the Engine Control 
Module (ECM). 
     
-  Switch ignition off and reconnect battery Ground 
(GND) strap. 
     
-  After connecting battery, enter anti-theft code for 
radio. 
     
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Page 24 of 34

19-20
      
Coolant thermostat, removing, installing 
and checking
 
     
Removing  
     
- Drain coolant   Page 19
-4 .
    
Installing  
WARNING! 
The cooling system is pressurized when the engine is warm. When 
opening the expansion tank, wear gloves and other appropriate 
protection, cover the cap using a cloth, and open carefully to relieve 
system pressure slowly. 
Tightening torque   -  Remove bolts -4-, remove connector -3-, O-ring -2- and coolant 
thermostat -1-. 
-  Clean and/or smooth O-ring sealing surface.
-  Install coolant thermostat. 
-  Fill up with coolant   Page 19
-6 .
Component  
Tightening torque  
Connector to pump housing   10 Nm (7 ft lb)  
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pair&id=AUDI.B5.GE02.19.1