1990 Audi 100 (C3-44) Service and Repair Manual

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🏷️ Basic Information Identification Make: Audi Model: 100 Year: 1990 Codes Chassis Code: C3-44 👋 Introduction Market Position Segment: Executive Mid-size Sedan/Wagon Positioning: Luxury, performance, and advanced technology for its...

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Taper: Car

Distributeur:

UGS: 28132

Mots clés: 100 (C3-44) 1990 Audi Car

Variantes de produits

Description

🏷️ Basic Information

Identification

Make:

Model:

Year:

Codes

Chassis Code:

C3-44

👋 Introduction

Market Position

Segment:

Executive Mid-size Sedan/Wagon

Positioning:

Luxury, performance, and advanced technology for its era

Competitive Analysis

Competitors:

BMW 5 Series, Mercedes-Benz E-Class, Volvo 240/700 Series, Saab 9000

Key Features

Design:

Aerodynamic styling, distinctive Audi grille, Quattro AWD option

Engineering:

Front-wheel drive as standard, sophisticated independent suspension, focus on driver control

Manual Value Proposition

Value:

Provides factory-level diagnostic and repair data, enabling accurate and efficient maintenance, crucial for preserving the vehicle's sophisticated systems.

📋 Manual Details

Coverage Areas

Models Covered:

All Audi 100 (C3-44) models

Repair Scope:

A-Z (All repairs)

Page Count

Estimated Page Count:

Extensive (Specific count not provided, but typical for full factory service manuals)

Manual Type

Type:

Factory Service and Repair Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine:

All engine types, diagnostics, repair, overhaul

Transmission:

Manual and Automatic transmission service, repair, overhaul

Drivetrain:

Front-wheel drive (FWD) and Quattro all-wheel drive (AWD) systems, differentials, drive shafts

Suspension:

Front and rear suspension components, geometry, repair

Steering:

Power steering system, steering rack, column

Brakes:

Hydraulic system, ABS (if equipped), discs, pads, lines, master cylinder, caliper overhaul

Electrical:

Complete wiring diagrams, diagnostics, ECU, sensors, actuators, lighting, charging system, starting system

Fuel System:

Fuel injection systems (K-Jetronic, KE-Jetronic), fuel pump, injectors, fuel pressure regulator

Cooling System:

Radiator, water pump, thermostat, hoses, fan operation

Exhaust System:

Exhaust manifold, catalytic converter, mufflers, piping

Climate Control:

Heating, ventilation, and air conditioning (HVAC) system components and service

Bodywork:

Body panel removal/installation, alignment, rust repair guidance

Interior:

Seat removal, dashboard components, trim panels

Procedures Included

Maintenance:

Scheduled maintenance intervals, fluid changes, filter replacements, tune-ups

Troubleshooting:

Diagnostic procedures for common and uncommon faults, symptom-based troubleshooting guides

Repair:

Detailed step-by-step repair instructions for all major and minor components

Overhaul:

Complete engine and transmission overhaul procedures, including component specifications

Diagnostics:

Specific diagnostic codes (where applicable), measurement values, signal tracing

Specifications:

Torque values, clearances, fluid capacities, electrical specifications

Technical Depth

Depth:

Comprehensive (Factory-level detail, suitable for professional technicians and advanced DIYers)

📊 Manual Specifications

File Format

File Type:

Searchability:

Likely text-searchable (if scanned professionally)

Print Quality

Quality:

High (Typical for factory manuals, includes diagrams and illustrations)

Binding Type

Binding:

N/A (Digital download)

Paper Type

Paper:

N/A (Digital download)

⚙️ Engine Specifications

Primary Engine

Engine Code Variants:

e.g., NG (2.3L I5), WC (2.2L I5 Turbo, Coupe/Quattro), NF (2.0L I4), PM (2.0L I4)

Engine Displacement

Displacement Options:

2.0L, 2.2L, 2.3L (Inline-4 and Inline-5, naturally aspirated and turbocharged)

Performance

Horsepower Range:

Approx. 115 hp to 170 hp (depending on engine and turbocharging)

Torque Range:

Approx. 125 lb-ft to 177 lb-ft (depending on engine and turbocharging)

Fuel System

Injection Type:

Bosch K-Jetronic (CIS) and KE-Jetronic (CIS-E)

Fuel Type

Fuel Recommendation:

Unleaded gasoline (Octane rating appropriate for engine, e.g., 91 AKI or higher for turbo models)

Engine Management

ECM Type:

Various digital engine control units (ECUs) depending on engine and year, often with diagnostic connectors

🔧 Transmission

Standard

Transmission Type:

5-speed Manual Transmission

Optional

Transmission Type:

4-speed Automatic Transmission (e.g., ZF 4HP-22)

Features

AWD System:

Optional Torsen center differential Quattro all-wheel drive system

Fluid Specifications

Atf Type:

Refer to manual for specific ATF (e.g., Dexron III or equivalent for automatic transmissions)

Manual Trans Oil Spec:

Refer to manual for specific gear oil (e.g., SAE 75W-90 GL-4/GL-5)

📐 Dimensions

Exterior

Body Styles:

4-door Sedan, 5-door Avant (Wagon)

Weights

Curb Weight Range:

Approx. 2,900 - 3,500 lbs (1315 - 1588 kg), depending on configuration

🛡️ Safety Features

Ratings

Crash Testing:

Limited official crash test data available for this era, but generally designed to meet European standards of the time.

Passive Features

Airbags:

Driver-side airbag became available/standard later in the C3 generation, optional on some models.

Seatbelts:

3-point inertia-reel seatbelts front and rear.

Chassis Design:

Unitized body construction with crumple zones.

Active Features

Anti-lock Braking System (ABS) was an optional feature on many models.

💡 Technology Features

Infotainment

Audio System:

Factory premium sound systems available (e.g., Audi Concert), often with cassette player and analog tuning.

Climate Control:

Manual climate control standard; optional automatic climate control (Climatronic on later models, but less common in '90 C3).

Driver Assistance

Cruise Control:

Optional cruise control system.

Connectivity

Diagnostics:

On-board diagnostics (OBD) capabilities may be limited to basic fault codes via specific diagnostic connectors, not the comprehensive OBD-II standard.

🔧 Maintenance

Service Intervals

Oil Change:

Typically every 5,000 - 7,500 miles (8,000 - 12,000 km) or 6-12 months, depending on driving conditions and oil type.

Timing Belt:

Crucial replacement interval for 5-cylinder engines (e.g., 60,000 - 90,000 miles or 5-7 years). Failure can cause catastrophic engine damage.

Fluid Specifications

Engine Oil Type:

Refer to manual: Typically SAE 5W-30 or 5W-40 synthetic or semi-synthetic for optimal protection, or SAE 10W-40 for older specs/warmer climates. Check API classification.

Coolant Type:

Ethylene glycol based coolant, mixed 50/50 with distilled water. Refer to manual for specific Audi G11 or equivalent specifications.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Known Issues

Engine:

Fuel distributor leaks (K-Jetronic), ignition coil failure, vacuum hose degradation, oil leaks from seals and gaskets, timing belt tensioner issues.

Electrical:

Degrading wiring insulation (especially in engine bay), headlight switch failures, power window regulator issues, dashboard illumination problems.

Suspension:

Worn control arm bushings, ball joints, and tie rod ends; rear torsion bar issues on some Quattro models.

Body:

Rust, particularly around wheel wells, rocker panels, and sunroof drains.

Parts Availability

Part Availability:

Some specific parts may be scarce due to age, requiring specialized suppliers or donor vehicles.

📚 Vehicle History

Brand Heritage

Brand Focus:

Audi has a long history of engineering excellence, particularly in Quattro all-wheel drive technology and TDI diesel engines (though the latter are not prevalent in US-spec 1990 100s).

Model Evolution

C3 Generation:

The C3 generation (Type 44) was produced from 1982 to 1991, known for its aerodynamic 'new wave' design and pioneering use of galvanized steel for corrosion resistance.

Production

Production Period:

1982-1991 (Type 44 platform)

Production Locations

Manufacturing Sites:

Ingolstadt, Germany

🏆 Awards & Recognition

Recognitions

Design Award:

The C3 generation's aerodynamic design was lauded and won awards, contributing to its contemporary aesthetic.

Ratings

Reliability Perception:

Perceived as a reliable vehicle when properly maintained, though complexity and age can introduce issues. High performance variants (like the 200 Turbo) require more diligent upkeep.