Target Audience:
Audi 80 B4 owners undertaking their own repairs or seeking in-depth technical knowledge, independent workshops.
Value Proposition:
Provides factory-level repair information to save on dealership labor costs and empower owners with technical understanding. Essential for maintaining a classic vehicle like the Audi 80 B4.
Detail Level:
Extremely detailed, step-by-step instructions and diagrams ensure clarity for complex procedures.
Comprehensiveness:
Covers virtually all aspects of the vehicle, from basic maintenance to complete mechanical and electrical system overhauls.
Engine:
Detailed engine overhauls, component identification, lubrication systems, cooling systems, fuel delivery.
Injection Ignition:
Comprehensive coverage of fuel injection systems (likely CIS-E or similar for the era), ignition timing, spark plug replacement, sensor diagnostics.
Clutch:
Clutch operation, adjustment, replacement, hydraulic system.
Gearbox:
Manual and automatic gearbox service, fluid changes, internal component repair, differential.
Suspension System:
Front and rear suspension components, shock absorbers, springs, bushings, alignment procedures.
Wheels:
Wheel bearing service, tire pressure recommendations, bolt patterns, wheel alignment.
Braking System:
Brake pad and disc replacement, caliper service, hydraulic system bleeding, ABS (if equipped) diagnostics.
Control Driving Instructions:
Likely refers to basic operation, driver aids, and potentially limited troubleshooting from a driver's perspective.
Air Temp Control System:
HVAC system operation, refrigerant handling (if applicable), climate control diagnostics, blower motor.
Electrical System:
Comprehensive electrical diagrams, wiring harnesses, battery, alternator, starter, lighting systems, dashboard indicators, fuse box locations.
Bodywork:
Body panel repair, door mechanisms, glass replacement, trim, structural information (likely limited).
Maintenance:
Oil changes, filter replacements, spark plug service, fluid checks and top-offs, belt adjustments.
Repair:
Engine rebuilds, transmission overhaul, brake system repair, suspension component replacement, electrical component repair.
Diagnostics:
Troubleshooting guides for various systems, component testing procedures, identification of common faults.
Installation:
Component replacement and installation procedures for most major systems.
Depth:
In-depth workshop level, suitable for professional mechanics and advanced DIY enthusiasts. Covers everything from routine maintenance to complete engine and transmission rebuilds.
Illustrations:
Detailed step-by-step diagrams, exploded view diagrams for component identification and reassembly.
Special Tools:
Likely specifies any special tools required for specific procedures, a hallmark of factory-level manuals.
Engine Type:
Various Inline-4 and V6 petrol engines were available for the B4 platform. Specific engine variants covered would depend on the exact manual's scope, but commonly include 2.0L (85kW), 2.0E (115hp), 2.3E (133hp) 5-cylinder, and 2.6L V6 (150hp) models.
Power Output:
Varies by engine. For instance, the 2.0E typically produced around 115 PS (113 hp; 85 kW). The 2.3E produced around 133 PS (131 hp; 98 kW). The 2.6L V6 produced around 150 PS (148 hp; 110 kW).
Torque Output:
Varies by engine. For example, the 2.0E would produce around 170 Nm (125 lb-ft), and the 2.3E around 180 Nm (133 lb-ft).
Injection System:
Likely utilizes Bosch K-Jetronic (CIS) or CIS-E fuel injection for most gasoline engines of this era, with variations depending on specific engine code.
Fuel Type:
Unleaded gasoline (Benzin)
Spark Plugs:
Specific part numbers and gap specifications would be detailed for each engine variant.
Oil Change Interval:
Typically around 10,000-15,000 km (6,000-9,000 miles) or annually, depending on driving conditions and specific engine oil used. The manual will detail the exact interval.
Timing Belt:
Critical for many Audi engines of this era. Replacement intervals usually around 60,000-90,000 km (37,000-56,000 miles). Failure can cause catastrophic engine damage.
Engine Oil:
Viscosity grades like 5W-40 or 10W-40 are common. Specific VW/Audi specifications (e.g., VW 500.00, VW 502.00) will be detailed in the manual.
Coolant:
Ethylene glycol-based coolant, typically G11 specification (blue or green) or G12 (pink), mixed with distilled water. Capacities vary by engine.
Common Problems:
Potential issues can include aging electrical components (corrosion in connectors, failing relays), coolant leaks from hoses or radiators, worn suspension bushings, fuel distributor issues (on CIS-E systems), and ABS sensor failures.
Audi Legacy:
The Audi 80 B4 represents a significant evolution in Audi's design language and engineering, building upon the success of its predecessors. It laid the groundwork for future Audi models.
B4 Introduction:
The B4 generation was introduced in late 1991 for the 1992 model year, replacing the B3. It featured a more modern design, improved safety, and enhanced chassis dynamics.
Production Period:
The B4 generation was produced from 1991 to 1995.
