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.
1987 Audi 5000 CS, StandardFACTORY OEM SERVICE PROCEDURE
Testing Precautions
When testing the CIS-E III system, observe the following precautions to avoid injury or damage to the system.
- DO NOT touch or disconnect ignition wires with engine running. Disconnect or connect engine wiring and test leads ONLY with engine off. DO NOT connect test lamp to terminal No. 1 of ignition coil.
- If engine must be turned over but not started, remove coil wire from ground. Using a jumper wire, ground the coil wire. A fast charger can be used as a starting aid for no more than 15 seconds at a time with a one minute break between attempts and a maximum of 16.5 volts.
- DO NOT use a standard ignition coil. Disconnect battery during any welding operations. When heating to more than 176°F (80°C), such as painting or steam cleaning, DO NOT start engine immediately.
- Wash engine with engine not running and ignition off. DO NOT disconnect battery with engine running. DO NOT apply voltage to control units. DO NOT start engine with injectors removed.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.