Vehicle Segment:
Compact Executive / Sports Coupe
Target Audience:
Enthusiasts, DIY mechanics, owners of classic Audi models
Key Competitors:
BMW 3 Series (E30), Mercedes-Benz 190E, Ford Sierra Cosworth, Opel Calibra
Vehicle Appeal:
Stylish coupe design, Quattro all-wheel drive option, build quality, performance variants (e.g., Audi Sport)
Manual Value Proposition:
Enables cost-effective DIY repairs and maintenance, preserving the vehicle's condition and value.
Years Covered:
1988, 1989, 1990, 1991, 1992
Models Covered:
All Audi 80, 90, and Coupe variants
Engine Variants Covered:
All engine types and configurations
Transmission Types Covered:
All transmission types (manual and automatic)
Trim Levels Covered:
All trim levels
Estimated Page Count:
Extensive (typically 1000+ pages for a complete factory-style manual)
Type:
Workshop Service Repair Manual
Engine:
Engine mechanical, lubrication, cooling, fuel injection, ignition, emissions control
Transmission:
Manual and automatic transmission overhaul, diagnostics, fluid service
Drivetrain:
Clutch, drive shafts, differentials, axle components
Suspension:
Front and rear suspension, steering system, wheel alignment
Brakes:
Brake system hydraulics, components (calipers, rotors, pads), ABS diagnostics
Electrical:
Battery, charging system, starting system, lighting, wiring diagrams, fuses, relays
Body:
Body panels, doors, windows, interior trim, convertible top mechanism (if applicable)
HVAC:
Heating, ventilation, and air conditioning systems
Restraints:
Seat belts, airbags (if equipped)
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks, spark plugs
Troubleshooting:
Diagnostic procedures for common and uncommon faults, symptom-based troubleshooting charts
Repair:
Detailed step-by-step repair instructions for all major and minor components
Overhaul:
Complete engine and transmission rebuild procedures
Diagnostics:
Fault code interpretation, circuit testing, sensor testing
Installation:
Component replacement and installation guidance
Depth:
Comprehensive, covering routine maintenance to full engine and transmission rebuilds
Detail Level:
Includes detailed diagrams, torque specifications, and diagnostic data
Engine Family:
VW Group EA827 (and derivatives)
Common Engine Codes:
JN, NP, PM, RP, ABT, AAD, AAN (for 20V Turbo), 3B (for 20V Turbo Quattro)
Displacement Range:
1.6L, 1.8L, 2.0L, 2.2L, 2.3L (5-cylinder)
Horsepower Range:
Approximately 75 hp to 220 hp (for Audi Sport/20V Turbo models)
Torque Range:
Approximately 120 Nm to 309 Nm
Fuel Delivery:
Bosch CIS-Jetronic, Bosch KE-Jetronic, Bosch Motronic EFI
Fuel Type:
Unleaded gasoline (Octane rating as per vehicle specification)
Manual Transmission:
5-speed manual gearbox
Automatic Transmission:
3-speed or 4-speed automatic transmission
Drivetrain Options:
Front-wheel drive (FWD), Quattro all-wheel drive (AWD)
Manual Transmission Fluid:
API GL-4, SAE 75W-90 or 80W-90 (refer to manual for specific viscosity)
Automatic Transmission Fluid:
G 052 162 A1 (or equivalent Dexron III/Mercon)
Crash Test Data:
Limited publicly available data for this specific era, but generally considered robust for its time.
Braking System:
Front ventilated discs, rear discs (standard or optional depending on model/engine)
ABS:
Anti-lock Braking System (ABS) was an optional feature on many models.
Airbags:
Driver's side airbag became available/standard later in the production run.
Seat Belts:
Three-point seat belts with pretensioners.
Audio System:
Factory-installed radio/cassette systems, often with optional amplifier.
Cruise Control:
Optional on higher trim levels.
Interior Features:
Power windows, central locking, and optional sunroof were common features.
Oil Change:
Every 10,000-15,000 km or 12 months, whichever comes first.
Timing Belt:
Typically every 60,000-90,000 km or 5-6 years (critical component, refer to manual for specific engine code).
Coolant:
G 11 specification coolant (blue/green) or equivalent, mixed 50/50 with distilled water.
Brake Fluid:
DOT 3 or DOT 4 (refer to manual for exact specification).
Power Steering Fluid:
G 002 000 specification (or Pentosin CHF 11S equivalent).
Engine Cooling:
Plastic coolant flange and thermostat housing can become brittle; check for leaks.
Electrical Systems:
Degradation of wiring insulation, particularly in engine bay; fuel pump relay failures.
Suspension Components:
Worn control arm bushings, ball joints, and tie rod ends due to age and mileage.
Fuel Injection System:
CIS-Jetronic/KE-Jetronic systems can be sensitive to air leaks and sensor issues.
Audi Philosophy:
Known for Quattro all-wheel drive, engineering precision, and premium build quality.
B3 Platform:
The Audi 80/90 (B3) generation introduced significant advancements in aerodynamics, safety, and suspension design.
Production Period:
1986-1991 (B3 generation, which this manual covers)
Manufacturing Location:
Germany
