Positioning:
The Audi 100 (C3) was positioned as a premium mid-size sedan, known for its advanced aerodynamics, innovative features like the 'Procon-10' safety system, and high-quality engineering, competing against established European luxury marques.
Segment:
Upper-medium segment executive car.
Competitors:
BMW 5 Series, Mercedes-Benz E-Class, Volvo 240/740, Peugeot 505, Ford Scorpio.
Manual Features:
Detailed substeps, notes/cautions/warnings, numbered instructions, bold figure numbers, detailed illustrations/drawings/photos, enlarged insets, numbered table of contents, combined troubleshooting and electrical service with wiring diagrams.
Manual Value Proposition:
Provides professional-level repair information, empowering owners and technicians to maintain and repair their Audi 100 effectively, leading to cost savings and extended vehicle life.
Systems:
Body, Frame & Mounting, Engine, Suspension, Driveline, Brake Systems, Transmission/Transaxle, Clutch, Chains, Exhaust, Fuel System, Steering, Shocks, Climate Control, Instrumentation & Warning Systems, Battery & Charging Systems, Audio System, Lighting, Electrical Distribution, Wiring Diagrams.
Engine Systems:
Engine mechanicals (cylinder head, block, pistons, crankshaft, camshafts), lubrication, cooling, fuel delivery, ignition, exhaust, emissions control.
Transmission Driveline Systems:
Manual and automatic transmission overhauls, clutch replacement, CV joints, driveshafts, differentials, Quattro system components.
Suspension Steering Brake Systems:
Front and rear suspension (struts, control arms, bushings), steering rack, power steering system, brake system components (calipers, rotors, master cylinder, ABS components), parking brake.
Electrical Systems:
Battery, charging system (alternator, starter), ignition system, lighting (headlights, taillights, interior), instrumentation, warning lamps, power windows, central locking, climate control electronics, and detailed wiring diagrams for all circuits.
Body Chassis Systems:
Body panels, doors, windows, locks, bumpers, frame structure, rust prevention, trim, and mounting points.
Lighting Systems:
Headlamp aiming, bulb replacement, taillight assembly, interior lighting, fog lights (if equipped).
Procedures:
Step-by-step repair procedures, troubleshooting guides, electrical system diagnostics, circuit diagrams, equipment information, detailed substeps, repair procedure information.
Maintenance Procedures:
Oil and filter changes, spark plug replacement, air filter replacement, coolant flushes, brake fluid changes, drive belt inspection and replacement, battery maintenance.
Repair Procedures:
Engine rebuilds, cylinder head gasket replacement, transmission rebuilds, brake system overhauls, suspension component replacement, electrical component diagnosis and repair, fuel system component replacement.
Troubleshooting Diagnostics:
Systematic troubleshooting for starting issues, running problems, electrical faults, braking issues, and other common symptoms, aided by diagnostic flowcharts and wiring diagrams.
Climate Control Repair:
Service and repair procedures for the HVAC system, including refrigerant handling (if applicable to the R12 or R134a systems), blower motor, heater core, and A/C components.
Depth:
Comprehensive, covering basic maintenance to advanced diagnostics and repair, suitable for both novice and experienced technicians.
Diagnostic Tools Mentioned:
Likely refers to basic diagnostic procedures requiring common hand tools and multimeter, with mention of specific diagnostic connectors or procedures relevant to K-Jetronic/Motronic systems.
Engine Options:
The Audi 100 (C3) was offered with a range of inline-five and V6 gasoline engines, and diesel engines. Common gasoline engines included: 1.8L (4-cylinder, early models), 2.0L (inline-5), 2.2L (inline-5, including turbo variants), 2.3L (inline-5), and 2.6L/2.8L (V6). Diesel options included 1.9L TDI and 2.4L naturally aspirated diesel.
Horsepower Range:
Approximately 70 hp (diesel) to 165 hp (turbocharged gasoline) depending on engine variant and year.
Fuel Delivery:
Fuel injection (Bosch K-Jetronic, KE-Jetronic, or Motronic) for most gasoline engines; Carburetion on some earlier or base models. Diesel engines used injection pumps.
Common Engines:
e.g., NP (2.2L), JY (2.0L 10V Turbo), SK (2.3L 10V), AAR (2.3L 20V), WC (2.6L V6), ABC (2.8L V6).
Layout:
Inline-five cylinder, V6, and inline-four cylinder (early models), transversely mounted for FWD and Quattro models.
Engine Displacement Range
Displacement:
1.8L to 2.8L.
Oil Change Interval:
Typically 7,500-10,000 miles (12,000-16,000 km) or 1 year, whichever comes first, depending on driving conditions and oil used. Manual will specify exact intervals.
Engine Oil:
e.g., SAE 5W-40 or 10W-40, API SG/SH, ACEA A2/A3. Manual will provide precise API/ACEA classifications and viscosity grades for different engine types and climate conditions.
Coolant:
G11 specification coolant (e.g., VW TL 774-C), typically a 50/50 mix of ethylene glycol and distilled water. Manual specifies exact type and concentration.
Transmission Fluid Manual:
Gear oil, e.g., API GL-4, viscosity SAE 75W-90 or 80W-90. Manual specifies exact type and capacity.
Transmission Fluid Automatic:
ATF Dexron II or III specification. Manual specifies exact type and capacity.
Brake Fluid:
DOT 3 or DOT 4 brake fluid. Manual specifies exact type and replacement interval.
Power Steering Fluid:
Typically ATF Dexron II or a specific power steering fluid. Manual will specify.
Common Problems:
Rust (especially around wheel arches, sills, and tailgate), worn suspension bushings, aging fuel injection components (e.g., fuel distributor, injectors), aging electrical connectors and wiring (especially at the fuse box and ignition components), distributor cap and rotor wear, thermostat housing leaks, potential for head gasket issues if overheated.
Common Electrical Problems:
Flickering dashboard lights, intermittent wiper operation, issues with central locking due to vacuum lines or actuators, corroded grounds.
