wheel AUDI A8 1998 D2 / 1.G AHA Engine Motronic Ignition System Workshop Manual

28-1
Motronic ignition system Technical data, spark plugs

Engine code
AHA

Engine idle RPM

Idle RPM cannot be adjusted, is corrected by Idle Air Control (IAC) 620 - 740 RPM
(all-wheel drive)
740 - 860 RPM
(front-wheel drive)
RPM limit
Operates by shutting off fuel injectors approx. 6500 RPM
Ignition timing
Ignition timing cannot be adjusted; it is determined by the Engine Control Module (ECM)
Firing order 1-4-3-6-2-5
Spark plugs Tightening torque 30 Nm (22 ft lb)
Part No. 1) 101 000 035 HJ (NGK)
Manufacturer's code
(if applicable) BKR 6 EKUB (NGK)

Electrode gap - mm 1.6 mm

Maintenance interval Owner's Manual

Pa
ge 1 of 34 Motronic i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.28.1

28-17

- Compare displayed values with specified values
for misfire recognition (display fields 3-4):

Display groups

1 2 3 4
Display group 14: Misfire recognition
Display xxx RPM xx.xx ms xxx activated
deact
Indicates Engine speed
(in 40 RPM
steps) Engine load Misfire harmful to emissions (total) Misfire recognition status
Range 0 - 6800 RPM 0.00 - 12.75
ms --- ---
Specified
value 620 - 740 RPM
(all-wheel drive) 1.0 - 2.5 ms 30 activated
740 - 860 RPM
(front-wheel
drive)

--- --- If displayed values are NOT OK page 28
-18
, display groups 15,
16
If displayed values are OK:
Pa
ge 20 of 34 Motronic i
gnition s
ystem
11/23/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.FU03.28.1