AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst A3 1998 8L / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1078/w960_1078-0.png AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst
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Page 31 of 81

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst 24-29
      
Note:  
     
Idle speed cannot be adjusted.
     Idle speed is checked during basic setting of 
the engine. 
     During basic setting, the Evaporative Emission 
(EVAP) canister purge re

Page 32 of 81

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst button to confirm input. 
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jection s
ystem, servicin
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11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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Page 33 of 81

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst 24-30
 
Basic Settin
g 
Q
Enter display group number XXX
    
When indicated on display  
-  Press buttons -0-, -5- and -6- to select "display group number 056" and 
press -Q- button to confirm input.

Page 34 of 81

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst 24-31
      
Note:  
     
Engine speed in display field 1 (actual engine 
speed) is the current engine speed. 
     Engine speed in display field 2 (specified 
engine speed) is a theoretical engine s

Page 35 of 81

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst -  If DTC memory was erased, readiness code must be re-generated   
Page 01
-73
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ge 35 of 81 Motronic fuel in
jection s
ystem, servicin
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11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?

Page 36 of 81

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst 24-32
      
If idle speed is too high or low and there are 
no DTCs in DTC memory, the following tests 
(marked with dots) must be performed:  
     
Check for false air in intake air system   
Page

Page 37 of 81

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst 24-33
      
System pressure, fuel pressure 
regulator and residual pressure, 
checking
 
     
Note:  
     Fuel pressure regulator regulates fuel pressure 
according to intake manifold pressure. Thi

Page 38 of 81

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst 24-34
      
Checking system pressure  
     
-  Open fuel filler flap briefly (pressure release).
    
WARNING! 
Fuel system is under pressure! Before opening system, place rags 
around the connectio

Page 39 of 81

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst 24-35
 
    
-  Open shut-off valve of pressure gauge. The lever points in the direction 
of flow. 
-  Start engine and let run at idle.
- Measure fuel pressure. 
 
Specification: about 3.5 bar positi

Page 40 of 81

AUDI A3 1998 8L / 1.G ATW Engine Motronic Fuel Injection Syst 24-36
       If residual pressure sinks below 2.5 bar positive 
pressure:  
     
-  Start engine and let run at idle.
    
If pressure does not drop now:  
If pressure drops again:  
If pressure does
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