Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI1998A8 SEDAN (4D2) V8-3.7L (AEW)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMSPECIFICATIONS
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)
Ignition System: Specifications
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)SECTION Specifications
Engine codes ABZ/AEW
RPM limit (Motronic) 6300 ± 40 RPM
Engine idle speed Maintained by idle Air Control (IAC) (cannot be adjusted)
Firing order 1-5-4-8-6-3-7-2
Engine speed (RPM) sensor resistance approx. 1.0 kilo ohms
Ignition coils Individual coils controlled by two power output stages
Ignition timing Determined by Motronic Engine Control Module (ECM) (cannot be adjusted)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.