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.
1988 Audi 80 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
BOSCH Cis MOTRONIC System
- Description
- Operation
- Testing
- Component Testing
- Starting Enrichment
- Deceleration Fuel Shutoff
- Cold Start Valve
- Sensor Plate Lever/Control Plunger
- Airflow Sensor Plate
- Potentiometer
- Idle Stabilization Valve
- Oxygen Sensor
- Ignition Signal
- Fuel System Pressure
- Differential Pressure Regulator
- Residual Pressure
- Coolant Temperature Sensor
- Idle & Full Throttle Switches
- Idle Switch
- Full Throttle Switch
- Adjustments
- Wiring Diagrams
Factory Service Tools
Use the Manual With the Right Hardware
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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.