check engine AUDI A8 1997 D2 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual

AUDI A8 1997 D2 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual A8 1997 D2 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/987/w960_987-0.png AUDI A8 1997 D2 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual

Page 7 of 40

AUDI A8 1997 D2 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-5
 
  
Cooling system components (on engine)
 
1 - 
Connection 
For thermostat
2 - 
O-ring Always replace
3 - 
Coolant thermostat Removing and installing   page 19
-23
Note installation position

Page 8 of 40

AUDI A8 1997 D2 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-6
 
  
7 - 
Engine Coolant Temperature (ECT) sensor 
-G62- 
For Engine Control Module (ECM)If necessary, release pressure in cooling 
system before removing Checking   Repair Manual, 2.8 Liter V6

Page 19 of 40

AUDI A8 1997 D2 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-16
      
-  Raise engine speed to approx. 2000 rpm for 
approx. 5 minutes. 
     
-  Allow engine to idle until lower coolant hose on 
radiator is hot. 
     
-  Check coolant level and top-off if

Page 34 of 40

AUDI A8 1997 D2 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-28
      
Cooling system, pressure test
 
     
Engine at operating temperature 
     
WARNING! 
     
The cooling system is pressurized when the 
engine is warm. When opening the expansion 
tank,

Page 38 of 40

AUDI A8 1997 D2 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-32
      
After-run coolant pump, checking
 
     
Note:  
     
Control modules with an after-run time of 15 
seconds after engine is turned off were installed 
since start of production. As a run