Target Audience:
Audi 80/90 B3 owners, DIY enthusiasts, independent repair shops.
Advantage:
Provides detailed, specific information tailored to the Audi 80/90 B3, often surpassing generic repair guides.
Unique Selling Points:
Comprehensive system coverage, detailed wiring diagrams, step-by-step procedures, troubleshooting guides, cost savings on repairs.
Engine Drivetrain:
Engine, fuel system, emission controls, drivetrain components (timing chain, clutch, U-joints, CV joints, exhaust)
Chassis Suspension:
Wheel maintenance, suspension, steering system
Brakes Safety:
Brake systems, restraint systems (seatbelts, airbags)
Body Comfort:
Body repair, electrical systems, HVAC
Electrical Electronics:
Battery, charging system, audio systems, climate control, safety features
Estimated Pages:
Hundreds
Type:
Service and Repair Manual
Powertrain:
Engine mechanicals, ignition, fuel injection, emissions control, cooling, lubrication, exhaust.
Transmission:
Manual and automatic transmission repair, clutch, driveshafts, CV joints.
Chassis:
Suspension (front and rear), steering, wheel bearings, hubs.
Brakes:
Hydraulic system, disc/drum brakes, ABS (if equipped), parking brake.
Electrical:
Wiring diagrams, battery, charging system, starting system, lighting, instrumentation, power accessories, climate control, safety systems.
Body:
Body panels, interior trim, doors, glass, bumpers, safety cage.
Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection and replacement, brake fluid flush.
Repair:
Engine component replacement (e.g., water pump, alternator), clutch assembly replacement, brake pad/rotor replacement, suspension component overhaul, electrical component diagnosis and replacement.
Troubleshooting:
Diagnostic procedures for engine performance issues, starting problems, electrical faults, brake system malfunctions, suspension noise.
Engine Rebuild:
Likely includes procedures for cylinder head removal and reassembly, piston and connecting rod installation, crankshaft and bearing service.
Diagnostics:
Covers diagnostic flowcharts for various systems, including engine performance, starting, charging, and brake system issues.
Depth:
Comprehensive, covering detailed diagnostics, repair procedures, and component replacement for all major vehicle systems.
Wiring Diagrams:
Essential for electrical troubleshooting, covering power distribution, component circuits, and grounds for all vehicle systems.
Engine Options B3:
While specific engine codes are not listed, the B3 generation typically featured inline-four cylinder engines such as the 1.6L (EZ, PP), 1.8L (PM, NE, RP), and 2.0L (3A, HP) and inline-five cylinder engines like the 2.2L (KV, KU, WC).
Typical Horsepower Range:
Ranges from approximately 70 hp to 136 hp depending on engine variant.
Typical Torque Range:
Ranges from approximately 110 Nm to 185 Nm depending on engine variant.
Fuel Delivery Method:
Primarily Bosch K-Jetronic (CIS) mechanical fuel injection for many early models, transitioning to CIS-Jetronic electronic fuel injection and later models may feature fully electronic fuel injection (e.g., Digifant).
Fuel Type:
Unleaded gasoline
Timing Mechanism:
Timing belt driven for most inline-four engines; timing chain driven for some inline-five engines.
Emission Systems:
Catalytic converters, oxygen sensors, EGR (Exhaust Gas Recirculation) systems depending on market and year.
Crash Test Information:
Specific official crash test ratings for this era are less standardized than modern tests. However, the B3 platform was known for its robust safety cage construction.
Active Safety:
Front disc brakes, rear drum brakes (or disc on some performance/AWD models), power-assisted steering.
Passive Safety:
Seatbelts (front and rear), impact-absorbing steering column, reinforced door beams, crumple zones.
Airbags:
Driver-side airbag became available or standard on some later models within this range, but was not universal across all variants.
Oil Change Interval:
Typically every 7,500 - 10,000 miles (12,000 - 16,000 km) or 6-12 months, depending on driving conditions and oil quality. Consult manual for specifics.
Timing Belt Replacement:
Crucial maintenance item. Varies by engine, but commonly around 50,000 - 75,000 miles (80,000 - 120,000 km). Failure can cause severe engine damage.
Coolant Flush:
Typically every 2-3 years or 30,000 miles (50,000 km).
Engine Oil:
Varies by engine, but often 5W-40, 10W-40, or 15W-40 synthetic or semi-synthetic oil meeting VW specifications (e.g., VW 500.00, 501.01). Consult specific engine data for accuracy.
Transmission Fluid Manual:
API GL-4 or GL-5 gear oil, typically SAE 75W-90 or 80W-90.
Transmission Fluid Automatic:
Dexron II or Dexron III (or equivalent) automatic transmission fluid. Specific ZF fluid requirements may apply.
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Common Problems:
Fuel distributor issues (K-Jetronic), vacuum leaks, aging rubber components (hoses, mounts), electrical connector corrosion, ABS sensor failures (if equipped), coolant leaks from plastic components, timing belt service neglect.
Common Problems Electrical:
Instrument cluster problems, headlight switch issues, door lock actuator failures.
Audi Legacy:
Audi has a long history of producing quality German automobiles, known for their engineering, quattro all-wheel-drive systems, and often sporty performance.
B3 Development:
The B3 (Type 89) replaced the B2 (Type 81). It featured a more aerodynamic and modern design, improved interior comfort, and significant updates to chassis and powertrain technology.
Production Period:
1986-1991 for the B3 generation. It was succeeded by the B4 generation.
Manufacturing Locations:
Primarily Ingolstadt, Germany, with potential production in other Volkswagen Group facilities.
Industry Perception:
The Audi 80/90 B3 was generally well-received for its build quality, comfortable ride, and distinctive styling, contributing to Audi's growing reputation in the premium segment.
Reliability Perception:
Considered reliable when properly maintained, though like many vehicles of this era, age-related wear on components is to be expected.
