torque AUDI A4 2000 B5 / 1.G APB Engine Motronic Multiport Fuel Injection System Servising Workshop Manual

24-19


WARNING!
Fire hazard! DO NOT smoke or work near
heaters of have anything in the area that can
ignite fuel. The fuel system is pressurized.
Before loosening hose connections or opening
the test connection), place a cloth around the
connection.
Install intake manifold in reverse order. (Tightening
torque of bolts: 10 Nm) 15 -
Loosen indicated hose. This hose leads to
the suction side of turbocharger bank 1.
16 -
Loosen fuel return line from fuel rail
(catch escaping fuel with clean rag).
17 -
Loosen fuel supply line from fuel rail.
18 -
Loosen indicated hose at EVAP valve.
- Unbolt intake manifold from cylinder
heads and carefuly lift intake manifold
from cylinder heads.
Pa
ge 21 of 90 Motronic Multi
port Fuel In
jection
(MFI
) system, servicin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.24.1

24-29
Notes:
System in Basic Setting 56
1
2
3
4

Indicated on display: (1 - 4 display zones) - Check whether the engine speed shown in display field 1 (actual
engine speed) is within the specified tolerance range (750 - 850 RPM).

Display fields

1 2 3 4
Display Group 056: Idle speed stabilization with engine idling at operating temperature
Display
xxx RPM
xxx RPM x.x % xxxxxxx
Indicates
Engine speed (actual)
Engine speed
(specified) Idling speed control-
torque change Operating conditions
Specified
value 750 -850 RPM
800 RPM x.x % 0 0 0 0 0
Note
If readout does not match
Specified value Page 24
-31

Relevance of figures
Page 24
-32

The value shown in display field 1 is the actual engine speed.
The value shown in display field 2 (specified engine speed) is a theoretical value calculated by the engine control module.
See note on next page:
Pa
ge 34 of 90 Motronic Multi
port Fuel In
jection
(MFI
) system, servicin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.24.1

24-46


WARNING!
Fire hazard! The fuel system is pressurized.
Before loosening hose connections or opening
the test connection, place a cloth around the
connection. Then release pressure by carefully
pulling off the hose or cap. 10 -
Briefly open screw connection on fuel rail
(supply hose) to release pressure. Use
clean cloth to catch any fuel that leaks
out. Then tighten screw connection again.
11 -
Unbolt fuel rail from intake manifold at the
points indicated (see arrows).
Tightening torque bolts: 10 Nm
Pa
ge 55 of 90 Motronic Multi
port Fuel In
jection
(MFI
) system, servicin
g
11/22/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU04.24.1