AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual A3 1995 8L / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/958/w960_958-0.png AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual

Page 1 of 50

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-1
 
     
Turbocharger system 
     
Note:  
     
Observe rules of cleanliness   Page 21
-22
 .
     
Charge air pressure control connection diagram 
 Page 21
-2 . 
     
All hose connections are

Page 2 of 50

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-2
 
  
Charge air pressure control, system 
overview
 
Vehicles with manual transmission  
1 - 
PCV valve 
For crankcase ventilation
2 - 
Evaporative Emission (EVAP) canister 
purge regulator valve

Page 3 of 50

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-3
 
  
10 - 
Check valve for Evaporative Emission 
(EVAP) canister 
Installed position (light/dark): as shown in 
illustration 
11 - 
Charge air cooler 
12 - 
Vacuum diaphragm For wastegate
13 - 
C

Page 4 of 50

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-4
      
Charge pressure bypass valve, checking
 
     
Note:  
     
The charge pressure bypass valve is located in 
front of the turbocharger. It is opened by 
vacuum during deceleration and when

Page 5 of 50

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual -  Replace valve and secure recirculation shut-off valve connections 
using hose clamps. 
Pa
ge 5 of 50 Turbochar
ger s
ystem
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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Page 6 of 50

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-5
      
Turbocharger and wastegate, checking
 
      If special testing equipment is required during 
test drive, heed the following WARNING:  
     
WARNING! 
     
When driving or riding in an a

Page 7 of 50

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-6
      
Test conditions:  
     
Check DTC memory Repair Manual, 1.8 
Liter 4-Cyl. 5V Turbo Fuel Injection & 
Ignition, Repair Group 01 
     Perform output diagnostic test mode 
(function 03)

Page 8 of 50

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-7
 
    
Note: 
WARNING!  -  Turn turbocharger tester on and select measuring range -I- (absolute 
pressure). 
-  Connect test hose to connection flange -I-.
Hoses must be connected so there is no

Page 9 of 50

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-8
      
Vehicles with manual transmission: 
     
-  Accelerate vehicle in 3rd gear at full throttle from 
2000 RPM and watch tachometer. 
    
Vehicles with automatic transmission:  -  At 3000 RP

Page 10 of 50

AUDI A3 1995 8L / 1.G AEB ATW Engines Turbocharger System Workshop Manual 21-9
      
Note:  
     For vehicles with automatic transmission the 
charge air pressure test may not always provide 
a definitive reading of proper charge air pressure 
regulation. If pressure read
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