AUDI A4 1998 B5 / 1.G Engine Overview Workshop Manual

1
Engine overview Code Letters
AFC
AEB
APB
AHA
ATQ
Manufactured from 11.94 11.94 09.99 02.97
Cylinders / valves per cylinder 6 / 2 4 / 5 6 / 5 6 / 5 6 / 5
Capacity liters 2.771 1.781 2.671 2.771 2.771
Output kW / rpm 128 / 5500 110 / 5700 187 / 5800 142 / 6000 142 / 6000
Torque Nm / rpm 245 / 3000
250 / 3000
1) 210 / 1750 258 /
1800-4500 280 / / 3200 280 / / 3200
Bore dia. - mm 82.5 81.0 81.0 82.5 82.5
Stroke mm 86.4 86.4 86.4 86.4 86.4
Compression ratio 10.3:1 9.5:1 9.3:1 10.6:1 9.9:1
Hyd. valve lifters Yes Yes Yes Yes Yes
Fuel and Ignition System Multi-Point Injection Motronic Motronic Motronic Motronic
Octane min.
95
2)
95
98
3)
98
3)

1) If unleaded premium plus 98 octane is used. 2) Unleaded premium plus 98 octane is also approved. 3) Unleaded 95 octane is also approved, though it yields less power.
Pa
ge 1 of 6 En
gine overview
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.ME01.01.1

2

Code Letters
AFC
AEB
APB
AHA
ATQ
Exhaust Gas
Recirculation (EGR) Yes No No No No
OBD with DTC Memory Yes Yes Yes Yes Yes
Exhaust emission control Three Way Catalytic Converter (TWC)
Oxygen Sensor (O2S) Control Yes Yes Yes Yes Yes
Electronic throttle control (E-Gas) No No Yes
Variable valve timing No No Yes
Pa
ge 2 of 6 En
gine overview
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.ME01.01.1

3
Overview of Oil Changes and Maintenance to my 2001

Service intervals in miles (kilometers)
5,000 miles (8,000 km)1)Oil Change and Maintenance Service
10,000 miles (16,000 km)1)Oil Change and Maintenance Service
20,000 miles (32,000 km)2)Oil Change and Maintenance Service
30,000 miles (48,000 km)3)Oil Change and Maintenance Service
40,000 miles (64,000 km)Oil Change and Maintenance Service
50,000 miles (80,000 km)Oil Change and Maintenance Service
60,000 miles (96,000 km)Oil Change and Maintenance Service
70,000 miles (112,000 km)Oil Change and Maintenance Service
80,000 miles (128,000 km)Oil Change and Maintenance Service
90,000 miles (144,000 km)Oil Change and Maintenance Service
100,000 miles (160,000 km)Oil Change and Maintenance Service
The brake fluid must be replaced every 2 years regardless of mileage (kilometers)
1) or 6 months after delivery, whichever occurs first. 2) or 12 months after delivery, whichever occurs first.
Pa
ge 3 of 6 En
gine overview
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.ME01.01.1

3) or 12 months after the least Maintenance Service, whichever occurs first.
The intervals shown in this table are based on
vehicles operating under normal conditions. In
case of severe conditions, such as extremely low
temperatures, excessive dust, etc., it is
necessary for certain operations to be carried out
in between the given intervals. This applies
particularly to engine oil changes and the
cleaning or replacing of the air cleaner filter
element.
Pa
ge 4 of 6 En
gine overview
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.ME01.01.1

4
Overview of Oil Changes and Maintenance from my 2002

Service intervals in miles (kilometers)
10,000 miles (15,000 km)
1)Oil Change and Maintenance Service
20,000 miles (30,000 km)2)Oil Change and Maintenance Service
30,000 miles (45,000 km)Oil Change and Maintenance Service
40,000 miles (60,000 km)Oil Change and Maintenance Service
50,000 miles (75,000 km)Oil Change and Maintenance Service
60,000 miles (90,000 km)Oil Change and Maintenance Service
70,000 miles (105,000 km)Oil Change and Maintenance Service
80,000 miles (120,000 km)Oil Change and Maintenance Service
90,000 miles (135,000 km)Oil Change and Maintenance Service
100,000 miles (150,000 km)Oil Change and Maintenance Service
The brake fluid must be replaced every 2 years regardless of mileage (kilometers)
1) Maintenance at 10,000 miles (15,000 km) or 1 year after delivery, whichever occurs first. 2) Maintenance at 20,000 miles (30,000 km) or 2 years after delivery, whichever occurs first.
The intervals shown in this table are based on
vehicles operating under normal conditions. In
Pa
ge 5 of 6 En
gine overview
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.ME01.01.1

case of severe conditions, such as extremely low
temperatures, excessive dust, etc., it is
necessary for certain operations to be carried out
in between the given intervals. This applies
particularly to engine oil changes and the
cleaning or replacing of the air cleaner filter
element.
Pa
ge 6 of 6 En
gine overview
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.ME01.01.1