|
Introduction
|
|
Market Position
|
|
Segment:
|
Compact Executive Sedan / Coupe
|
|
Target Audience:
|
Audi enthusiasts, DIY mechanics, independent repair shops specializing in European vehicles
|
|
Competitive Analysis
|
|
Competitors 1993:
|
BMW 3 Series (E36), Mercedes-Benz 190E (W201), Acura Integra, Lexus ES250
|
|
Key Features
|
|
Vehicle Usp:
|
Quattro all-wheel drive, refined interior, sophisticated styling for its era
|
|
Manual Value
|
|
Usefulness:
|
Essential for maintaining and repairing the complex German engineering of the 1993 Audi 90, offering factory-level detail.
|
|
Manual Coverage
|
|
Systems Covered
|
|
Powertrain:
|
Engine mechanical, fuel, ignition, exhaust, cooling, lubrication, emissions control, Quattro AWD system
|
|
Chassis:
|
Suspension (front & rear), steering, brakes (ABS included), wheels, tires
|
|
Electrical:
|
Wiring diagrams, lighting, instruments, ignition, starting, charging, body electronics, HVAC controls, power windows/locks
|
|
Body:
|
Body construction, interior trim, exterior trim, doors, windows, body sealing, collision repair basics
|
|
Procedures Included
|
|
Maintenance:
|
Scheduled maintenance, oil changes, filter replacements, fluid checks, belt replacement, spark plug service
|
|
Diagnostics:
|
Troubleshooting guides, symptom-based diagnostics, diagnostic trouble codes (DTCs) for applicable systems (e.g., ABS)
|
|
Repair:
|
Component removal and installation, component overhaul, system adjustments, torque specifications
|
|
Engine Rebuild:
|
Detailed procedures for engine disassembly, inspection, component replacement, and reassembly.
|
|
Transmission Overhaul:
|
Procedures for manual and automatic transmission repair and rebuilding.
|
|
Suspension Repair:
|
Instructions for replacing struts, shocks, control arms, bushings, and steering components.
|
|
Brake System Service:
|
Detailed steps for brake pad/rotor replacement, caliper service, bleeding the brake system, and ABS component troubleshooting.
|
|
Electrical Troubleshooting:
|
Comprehensive wiring diagrams, component testing procedures, and diagnostic flowcharts for electrical systems.
|
|
Body And Interior:
|
Guidance on removing and installing interior trim panels, door components, and exterior body moldings.
|
|
Technical Depth
|
|
Depth Level:
|
Comprehensive rebuild procedures, advanced diagnostics, detailed component-level repair
|
|
Diagnostic Tools:
|
References to specialized tools and diagnostic procedures specific to Audi vehicles of this era.
|
|
Engine Specifications
|
|
Primary Engine
|
|
Engine Code:
|
NG (2.3E), potentially others like AAH (2.8E)
|
|
Engine Type:
|
Inline 5-cylinder (2.3L), V6 (2.8L)
|
|
Displacement:
|
2.3 Liters (2309 cc) or 2.8 Liters (2771 cc)
|
|
Performance
|
|
Horsepower 2.3:
|
Approx. 130 hp @ 5800 rpm
|
|
Torque 2.3:
|
Approx. 137 lb-ft @ 3400 rpm
|
|
Horsepower 2.8:
|
Approx. 172 hp @ 5500 rpm
|
|
Torque 2.8:
|
Approx. 184 lb-ft @ 3500 rpm
|
|
Fuel System
|
|
Fuel Delivery:
|
Bosch KE-Jetronic CIS-E (2.3L), Bosch Motronic EFI (2.8L)
|
|
Fuel Type:
|
Unleaded Gasoline (91 Octane Recommended)
|
|
Valvetrain
|
|
Engine Configuration:
|
SOHC (2.3L), DOHC (2.8L)
|
|
Cooling
|
|
Cooling System Type:
|
Pressurized liquid cooling system
|
|
Lubrication
|
|
Oil Capacity 2.3:
|
Approx. 4.5 Liters (4.8 Quarts)
|
|
Oil Type 2.3:
|
SAE 10W-30 or 10W-40 (API SG or higher)
|
|
Maintenance
|
|
Service Intervals
|
|
Oil Change Interval:
|
Every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on driving conditions.
|
|
Timing Belt Replacement:
|
Every 60,000 miles (96,000 km) or 5 years for 2.3L engine. Manual will detail specific intervals.
|
|
Spark Plug Replacement:
|
Typically 30,000 miles (48,000 km) for standard plugs.
|
|
Fluid Specifications
|
|
Coolant Type:
|
G 12 or G 12+ (Ethylene Glycol based) coolant (check specific manual recommendation)
|
|
Brake Fluid Type:
|
DOT 3 or DOT 4
|
|
Known Issues
|
|
Common Wear Items:
|
Ignition components (distributor cap, rotor, plugs), fuel injectors (especially CIS-E), front suspension bushings, CV joints, starter motor, door lock actuators.
|
|
Electrical Gremlins:
|
Can develop due to age, particularly in wiring harnesses and sensor connections.
|
|
Rust Prone Areas:
|
Wheel arches, rocker panels, around windows, and subframes.
|
