Segment:
Compact Executive Sedan / Coupe
Target Audience:
Audi enthusiasts, DIY mechanics, independent repair shops specializing in European vehicles
Competitors 1993:
BMW 3 Series (E36), Mercedes-Benz 190E (W201), Acura Integra, Lexus ES250
Vehicle Usp:
Quattro all-wheel drive, refined interior, sophisticated styling for its era
Usefulness:
Essential for maintaining and repairing the complex German engineering of the 1993 Audi 90, offering factory-level detail.
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
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.
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 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)
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 Delivery:
Bosch KE-Jetronic CIS-E (2.3L), Bosch Motronic EFI (2.8L)
Fuel Type:
Unleaded Gasoline (91 Octane Recommended)
Engine Configuration:
SOHC (2.3L), DOHC (2.8L)
Cooling System Type:
Pressurized liquid cooling system
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)
Transmission Type Std:
5-speed Manual Transaxle
Transmission Type Opt:
4-speed Automatic Transaxle (ZF 4HP-18)
Drivetrain:
Permanent Quattro All-Wheel Drive (AWD)
Manual Transmission Fluid:
API GL-4, SAE 75W-90 or 80W-90 Synthetic Gear Oil
Automatic Transmission Fluid:
G 052 162 A1 (or equivalent ATF)
Wheelbase:
Approx. 100.3 inches (2548 mm)
Length:
Approx. 178.1 inches (4524 mm)
Width:
Approx. 67.9 inches (1725 mm)
Height:
Approx. 55.3 inches (1405 mm)
Curb Weight Manual:
Approx. 3175 lbs (1440 kg)
Curb Weight Automatic:
Approx. 3285 lbs (1490 kg)
NHTSA Front Impact:
Not explicitly rated for 1993 models per modern standards, but generally considered robust for its era.
ABS:
Standard on most 1993 90 models (Bosch ABS)
Airbags:
Driver-side airbag standard
Seatbelts:
3-point front and rear seatbelts
Chassis Design:
Unitized steel body construction with crumple zones
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.
Coolant Type:
G 12 or G 12+ (Ethylene Glycol based) coolant (check specific manual recommendation)
Brake Fluid Type:
DOT 3 or DOT 4
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.
Audi Legacy:
Part of Audi's reputation for engineering, safety, and Quattro technology, building on the Audi 80/90 lineage.
B3 Generation:
The 1993 model is part of the Type 89 (B3) generation, which introduced significant design and engineering updates over its predecessor.
Audi 90 Vs 80:
The '90' designation typically indicated a higher trim level or more powerful engine option compared to the Audi 80.
Production Years B3:
1986-1991 (European), 1989-1992 (North American Audi 80/90)
Manufacturing Location:
Ingolstadt, Germany
