Mechanical Engine:
Included (e.g., engine overhaul, timing belt replacement, fuel injection system)
Transmission:
Included (manual and automatic, clutch, gearbox service)
Brakes:
Included (disc and drum brakes, ABS systems if applicable, hydraulic components)
Steering:
Included (power steering system, steering column, tie rod ends)
Suspension:
Included (front and rear suspension, shock absorbers, springs, bushings)
Driveline Axle:
Included (front-wheel drive components, CV joints, driveshafts)
Electrical:
Included (starter, alternator, battery, ignition system, sensors)
Lights:
Included (headlights, taillights, interior lighting, wiring)
Restraints:
Included (seat belts, airbag systems if applicable)
Body Frame Interior Exterior:
Included (body panel removal, interior trim, doors, windows, seals)
HVAC:
Included (heating, ventilation, air conditioning system service)
Audio Visual Telematics:
Included (audio system removal, wiring)
Accessories Equipment:
Included (various accessory installations and repairs)
Tires Wheels:
Included (wheel alignment, tire replacement, balancing)
Wiring Diagrams:
Included (comprehensive electrical schematics)
Maintenance:
Included (routine checks, fluid changes, filter replacements)
Troubleshooting:
Included (diagnostic procedures for common faults)
Repair:
Included (step-by-step repair instructions for all major systems)
Overhaul:
Included (detailed procedures for engine and transmission overhauls)
Replacement:
Included (replacement of components like timing belts, alternators, brake pads)
Adjustment:
Included (e.g., carburetor adjustment, ignition timing)
Diagnostics:
Included (fault finding, error code interpretation)
Fuel System Service:
Included (diagnosis and repair of K-Jetronic/KE-Jetronic systems, injectors, fuel pumps, pressure regulators).
Emission Control:
Included (diagnosis and repair of emission control components, catalytic converter system).
Body Repair:
Included (procedures for repairing body panels, doors, windows, bumpers, and interior trim).
Climate Control Repair:
Included (diagnosing and repairing A/C system, heater core, blower motor, controls).
Electrical Diagnostics:
Included (troubleshooting electrical circuits using wiring diagrams, component testing).
Wheel Alignment:
Included (specifications and procedures for front and rear wheel alignment).
Torque Specifications:
Included (essential torque values for engine, chassis, and driveline components).
Depth:
Comprehensive factory-level coverage, suitable for professional technicians and advanced DIYers.
Diagnostic Tools:
While not explicitly listing tools, the manual's detail implies the use of standard automotive diagnostic tools (multimeter, pressure gauges, etc.).
Engine Options:
Likely included 1.6L, 1.8L, 2.0L inline-4, and 2.3L inline-5 cylinder engines. Specific engine codes will be detailed within the manual (e.g., PM, 3A, NG, KV).
Horsepower Range:
Approx. 75 HP to 137 HP, depending on engine variant.
Torque Range:
Approx. 120 Nm to 200 Nm, depending on engine variant.
Fuel Delivery:
Bosch K-Jetronic (CIS) or KE-Jetronic (CIS-E) mechanical fuel injection, and potentially early electronic fuel injection (EFI) systems for 2.0L and 2.3L engines.
Configuration:
Transverse inline-4 and inline-5 cylinder engines.
Displacement Range:
1.6L (1595cc) to 2.3L (2309cc).
Ignition Type:
Electronic ignition with distributor.
Cooling Type:
Liquid-cooled, pressurized system with fan.
Common Codes B3:
For the 1991 model year, common engine codes include 1.6L (EZ, PP), 1.8L (PM, RP), 2.0L (AAL, ABK), and the 2.3L 5-cylinder (NG, KV) for Quattro models.
Oil Change Interval:
Typically every 7,500-10,000 miles or 12,000-15,000 km, or annually. Manual will provide precise intervals based on driving conditions.
Timing Belt Replacement:
Crucial for inline-5 and some inline-4 engines. Recommended interval typically 60,000 miles or 90,000 km. Failure can cause catastrophic engine damage.
Engine Oil Viscosity:
Commonly 10W-40 or 5W-40 synthetic or semi-synthetic, depending on climate and engine. Manual will specify exact VW/Audi approval numbers.
Coolant:
G11 (blue) or G12 (pink) ethylene glycol-based antifreeze, mixed 50/50 with distilled water. Manual specifies exact type and capacity.
Brake Fluid:
DOT 3 or DOT 4, typically replaced every 2 years.
Common Failures:
Fuel distributor leaks (K-Jetronic), heater core leaks, dashboard electrical issues, worn suspension bushings, timing belt issues if not replaced on schedule, starter motor brushes.
Maintenance Tips:
Regular inspection of vacuum hoses, maintenance of the K-Jetronic system, and proactive timing belt replacement are key to longevity.