engine AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual A4 1997 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/965/w960_965-0.png AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual

Page 1 of 37

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual 21-1
 
     
Charge air system with 
turbocharger  
     
Turbocharger, removing and installing
 
      Observe rules for cleanliness   Page 21
-8 .  
     
Notes:  
     
Turbochargers must be replac

Page 7 of 37

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual 21-7
      
Tightening torque  
     
Bolted mountings      Tightening 
torque  
Turbocharger      20 Nm  
Intake line to cylinder head   10 Nm  
Heat shield to turbocharger      10 Nm  
Exhaust manif

Page 10 of 37

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual 21-10
      
Requirements for test: 
     
Diagnostic Trouble Code (DTC) memory has 
been interrogated 
     
       Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel 
Injection & Ignition, Engine Code(s):

Page 13 of 37

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual 21-12
      
-  Accelerate vehicle from 2000 RPM at full throttle 
in fourth gear, and watch rev counter. 
    
Note:  
If no charge pressure is obtained and a throbbing noise can be heard in 
the eng

Page 15 of 37

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual 21-14
      
Test sequence  
    
 Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel Injection & Ignition, 
Engine Code(s): APB, Repair Group 01
    -  Connect VAS 5051 tester or VAG 1551 scan tool and sele

Page 17 of 37

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual 21-15
      
-  Road test vehicle.
     
 
Wide Open Throttle (WOT) must be 
reached 
     
-  Measurement must be taken at Wide Open 
Throttle (WOT). 
  
Display fields  
  
1   2   3   4  
Display g

Page 18 of 37

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual 21-16
      
-  Select measuring value block 117.
     
-  Check function of accelerator pedal in display 
field 2 by briefly depressing pedal to Wide Open 
Throttle. 
  
Display fields  
  
1   2   3

Page 19 of 37

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual 21-17
      
-  Check correction factors in display fields 2 to 
4. 
  
Display fields  
  
1   2   3   4  
Display group 116: Charge air pressure regulation  
Display  1 RPM  
%  %  mbar  
Indicated

Page 21 of 37

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual 21-18
       If display field 4 indicates a correction factor <0 
%, intake air is too hot or the sensor for intake air 
temperature is faulty.  
     
       Repair Manual, 2.7 Liter V6 5V BiTurbo Fu

Page 24 of 37

AUDI A4 1997 B5 / 1.G APB Engine Charge Air System With Turbocharger Workshop Manual 21-20
      
Note:  
     The recirculating valve for turbocharger -N249 
and wire connections are monitored by the 
Engine Control Module (ECM). 
     
-  Connect VAS 5051 tester or VAG 1551 scan 
to
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