🏷️ Basic Information

Make:

Audi

Model:

Coupe Quattro

Year:

1990-1991

Paint Code Location:

Referenced in catalog (typically door jamb or under hood)

Clear Coat Identification:

Referenced in catalog

👋 Introduction

Segment:

Compact executive coupe, known for its performance-oriented all-wheel-drive Quattro system.

Target Audience:

Audi Coupe Quattro owners, independent repair shops, automotive enthusiasts undertaking restoration or maintenance.

Key Competitors:

BMW 3 Series (E30), Mercedes-Benz 190E, Ford Sierra Cosworth, Lancia Delta Integrale.

Vehicle Highlights:

Legendary Quattro all-wheel-drive system, sporty coupe design, sophisticated interior for its era, balanced handling.

Catalog Value Proposition:

Essential tool for accurate parts identification and pricing, critical for budget planning and efficient repairs.

📋 Manual Details

Catalog Scope:

Comprehensive parts listing for 1990-1991 Audi Coupe Quattro

Specific Components Covered:

Engine mounts, transmission mounts, engine under cover, air cleaner, exhaust, front bumper, grille, front lamps, windshield, hood, cowl & dash, cooling system, instrument panel, engine oil cooler, center console, A/C refrigerant capacities, rocker/pillars/floor, A/C heater/ventilation, front seat, front fender, rear seat, seat belts, front inner structure, front door, roof, sunroof, back window, wheel, quarter panel, quarter glass, luggage lid, front suspension, front steering linkage/gear, rear suspension, steering pump, fuel tank, steering wheel/column, rear body, rear lamps, rear bumper, emission system, ABS/brakes, cruise control system, information labels, special cautions

Estimated Page Count:

Not specified, but extensive due to detailed parts listing.

Type:

Parts List Catalog

Language:

English (Assumed, typical for this market)

Format:

PDF

📖 Manual Coverage

Powertrain:

Engine and transmission components (excluding internal parts), mounts, exhaust, cooling system, fuel tank, engine oil cooler, emission system.

Chassis Suspension Steering:

Front suspension, rear suspension, front steering linkage/gear, steering pump, wheel, ABS/brakes.

Body Exterior:

Front bumper, grille, hood, front fender, cowl & dash, roof, sunroof, back window, quarter panel, quarter glass, luggage lid, front door, rear body, rear bumper, rear lamps, front lamps.

Interior:

Instrument panel, center console, front seat, rear seat, seat belts, interior trim (rocker/pillars/floor).

Electrical HVAC:

Front lamps, rear lamps, cruise control system, A/C refrigerant capacities, A/C heater/ventilation. (Note: Explicitly states 'NO WIRING' for electrical section.)

Parts Identification:

Detailed part numbers for all listed components.

Labor Estimation:

Estimated labor hours for various repair procedures.

Parts Ordering:

Facilitates ordering of correct replacement parts.

Depth:

Focuses on part identification and associated labor times, crucial for repair planning and parts procurement. Does not include detailed repair instructions or diagnostic procedures, but essential for their execution.

📊 Manual Specifications

Type:

PDF

Searchability:

Likely searchable if properly OCR'd PDF, but text-based content is primary.

Quality:

Dependent on source scan quality. Generally high for parts catalogs to ensure clarity of diagrams and part numbers.

Type:

N/A (Digital format)

Type:

N/A (Digital format)

⚙️ Engine Specifications

Engine Code Family:

Audi/VW EA827 (various inline-5 configurations)

Displacement:

Likely 2.3L (2309 cc) for most Coupe Quattro models of this era.

Cylinder Configuration:

Inline 5-cylinder

Aspirated Induction:

Naturally Aspirated (most common for this year/model)

Estimated Horsepower:

Approximately 130-136 hp (depending on specific market and engine tune).

Estimated Torque:

Approximately 137-140 lb-ft (depending on specific market and engine tune).

Fuel Delivery:

Bosch K-Jetronic or KE-Jetronic CIS-E Fuel Injection (common for this era).

🔧 Transmission

Type:

5-speed Manual Transaxle

Type:

3-speed or 4-speed Automatic Transaxle (less common for Quattro performance variants, but potentially available).

Drivetrain:

Permanent All-Wheel Drive (Quattro)

Differential Locking:

Likely featured a viscous coupling or electronically controlled center differential lock for improved traction.

📐 Dimensions

Length:

Approximately 4400 mm (173.2 inches)

Width:

Approximately 1700 mm (66.9 inches)

Height:

Approximately 1350 mm (53.1 inches)

Wheelbase:

Approximately 2500 mm (98.4 inches)

Curb Weight:

Approximately 1300-1400 kg (2866-3086 lbs), varies with options.

Gross Vehicle Weight Rating:

Not specified, but would be listed on vehicle placard.

🛡️ Safety Features

Crash Test Performance:

No official NHTSA or Euro NCAP ratings available for this specific model/year. Safety features typical of the late 80s/early 90s.

Braking System:

Anti-lock Braking System (ABS) – likely standard on Quattro models.

Stability Control:

Not present (ESC was not common at this time).

Airbags:

Driver's side airbag (likely optional or standard on later production runs of this generation).

Seat Belts:

Front 3-point inertia-reel seat belts, likely rear lap belts.

Body Structure:

Reinforced cabin structure, crumple zones.

💡 Technology Features

Audio System:

Factory fitted AM/FM/Cassette stereo, possibly with optional CD player for later models. Speaker configuration would be detailed.

Instrumentation:

Analog gauges for speedometer, tachometer, fuel, coolant temperature, oil pressure. Warning lights for various systems.

Cruise Control:

Optional or standard on some trims, a technologically advanced feature for the time.

Connectivity Features:

N/A (No integrated Bluetooth, USB, or advanced connectivity typical of modern vehicles).

🔧 Maintenance

Oil Change:

Typically 7,500-10,000 miles (12,000-16,000 km) or 12 months, depending on driving conditions. Refer to original owner's manual for exact spec.

Timing Belt:

Critical component. Interval often around 60,000 miles (100,000 km) or 4-5 years. Failure can cause catastrophic engine damage.

Spark Plugs:

Around 30,000-60,000 miles, depending on plug type (copper, platinum).

Engine Oil:

Likely 5W-40 or 10W-40 synthetic blend or full synthetic, API SG or SH rated. Exact specification in owner's manual or via part number lookup in this catalog.

Coolant:

Ethylene glycol based, typically a 50/50 mix with distilled water. Audi G11 specification (blue/green).

Transmission Fluid:

Manual: GL-4 or GL-5 gear oil. Automatic: ATF specification, likely Dexron II or equivalent.

Brake Fluid:

DOT 3 or DOT 4.

Common Problems:

Timing belt failure, aging electrical connectors, fuel distributor issues (K-Jetronic), suspension wear (bushings, ball joints), rust in common areas (wheel arches, sills), ABS sensor failures.

Maintenance Focus:

Due to age, thorough inspection of rubber components, fuel lines, and electrical harness integrity is crucial.

📚 Vehicle History

Audi Prestige:

Audi was establishing its reputation for engineering, quattro technology, and a more premium market position.

Coupe Lineage:

Part of Audi's coupe offerings, evolving from earlier models. The Coupe Quattro was a sportier, AWD variant of the Audi 80/90 platform.

Production Period:

The Audi Typ 89 platform, which the Coupe Quattro was based on, was produced from 1986. The Coupe Quattro variant specifically spanned roughly 1988-1996, with the 1990-1991 period falling within its significant production years.

Manufacturing Location:

Germany (Ingolstadt or Neckarsulm)

🏆 Awards & Recognition

Industry Acclaim:

Audi Quattro technology itself received significant acclaim for its performance and safety advantages, influencing the automotive industry.