🏷️ Basic Information

Make:

Audi

Model:

S4

Year:

1993

Chassis Code:

B4

Engine Code Primary:

ABV

👋 Introduction

Segment:

Performance Sedan

Era:

Early 1990s Performance European Luxury

Competitors:

BMW M3 (E36), Mercedes-Benz 190E 2.3-16/2.5-16, Ford Sierra Cosworth.

Performance Focus:

Designed for enthusiasts seeking a balance of everyday usability and spirited driving.

All Wheel Drive:

Availability of the iconic Quattro all-wheel-drive system for enhanced traction and handling.

📋 Manual Details

General:

Comprehensive service and repair procedures for the 1993 Audi S4.

Estimated:

Highly detailed, likely exceeding 500 pages based on typical factory repair manuals for this era.

Type:

Factory Repair Manual / Service Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, pistons, crankshaft, camshafts, timing belt, oil pump, cooling system.

Engine Performance:

Fuel injection system (KE-Jetronic variants, fuel pump, injectors, fuel pressure regulator), ignition system (distributor, coils, spark plugs), emissions control, engine diagnostics.

Transmission:

Manual and Automatic transmission (identification, operation, disassembly, assembly, adjustments, torque converter, clutch, shifter mechanism).

Drivetrain:

Front-wheel drive, Quattro all-wheel drive system (differentials, driveshafts, CV joints).

Suspension:

Front and rear suspension components (struts, shock absorbers, control arms, bushings, anti-roll bars), alignment specifications.

Steering:

Power steering system (pump, rack and pinion, hydraulic lines, fluid), steering column, steering wheel.

Brakes:

Front and rear brake systems (discs, pads, calipers, master cylinder, brake booster, ABS system, parking brake).

Electrical System:

Battery, alternator, starter motor, wiring harnesses, fuses, relays, lighting circuits (exterior lamps, interior lamps, headlamp beam adjustment).

Body And Interior:

Body panels, doors, windows, locks, seat adjustments, seat belts, interior trim, defoggers, heating and ventilation (HVAC).

Comfort Systems:

Cruise control, power windows, power mirrors, central locking, memory column, seat heating (if equipped).

Infotainment:

Radio system (wiring, antenna, speakers), potentially navigation system (if equipped).

Routine Maintenance:

Oil changes, filter replacements, spark plug replacement, fluid checks and top-offs, brake pad inspection.

Diagnostic Troubleshooting:

Step-by-step troubleshooting guides for common and uncommon issues, diagnostic trouble codes (DTCs) interpretation (if OBD-I applicable), wiring diagram analysis.

Repair And Rebuild:

Detailed instructions for engine overhaul, transmission rebuild, suspension component replacement, brake caliper overhaul, electrical component repair.

Installation And Adjustment:

Component installation procedures, alignment adjustments, timing belt tensioning, clutch adjustment.

Depth:

Comprehensive, covering from basic maintenance to complete engine and transmission rebuilds. Includes detailed torque specifications, tolerances, and assembly sequences.

📊 Manual Specifications

Type:

PDF

Compatibility:

All Versions of Windows & Mac

Searchability:

Likely text-searchable if created from digital source or properly OCR'd.

Printability:

Printable without restriction.

Binding:

N/A (Digital PDF)

Paper:

N/A (Digital PDF)

Software:

Adobe PDF Reader

⚙️ Engine Specifications

Engine Type:

Naturally Aspirated V6

Displacement:

2.8 Liters (2771 cc)

Engine Code:

ABV

Valvetrain:

SOHC (Single Overhead Camshaft), 2 valves per cylinder

Horsepower:

172 hp @ 5500 rpm

Torque:

191 lb-ft (260 Nm) @ 3300 rpm

Injection:

Bosch KE-Jetronic (CIS-E Fuel Injection)

Fuel Type:

Unleaded Gasoline (91 Octane Recommended)

Coolant Type:

G11 (Blue/Green) or G12 (Red) Antifreeze/Coolant

Coolant Capacity:

Approximately 8.0 Liters (8.5 Quarts)

Oil Type:

Synthetic 5W-40 or 5W-30

Oil Capacity:

Approximately 5.0 Liters (5.3 Quarts) with filter change

🔧 Transmission

Type:

5-Speed Manual

Type:

4-Speed Automatic (with Sport Mode)

AWD System:

Quattro permanent all-wheel drive (standard on S4).

Gear Oil:

API GL-4 or GL-5, SAE 75W-90 Synthetic Gear Oil

Transmission Fluid:

ATF Dexron III or equivalent

📐 Dimensions

Length:

Approx. 4795 mm (188.8 in)

Width:

Approx. 1735 mm (68.3 in)

Height:

Approx. 1385 mm (54.5 in)

Wheelbase:

Approx. 2610 mm (102.8 in)

Curb Weight Manual:

Approx. 1500 kg (3307 lbs)

Curb Weight Automatic:

Approx. 1550 kg (3417 lbs)

Gross Vehicle Weight Rating:

Typically around 2000 kg (4409 lbs)

Wheel Bolt Pattern:

5x112mm

Wheel Size Standard:

16 x 7J

Tire Size Standard:

205/55R16

🛡️ Safety Features

Crash Test Era:

No standardized crash test ratings (like NHTSA/Euro NCAP) widely available for this specific model year.

ABS:

Anti-lock Braking System (ABS) standard.

Traction Control:

Traction Control System (ASR - Anti-Slip Regulation) available on some models.

Airbags:

Driver and passenger airbags.

Seatbelts:

Front and rear seat belts with pre-tensioners for front seats.

💡 Technology Features

Radio Type:

Analog or early digital tuner, often with cassette player. Premium sound systems available.

Speaker Configuration:

Typically 4-6 speakers, with options for amplifiers.

Cruise Control:

Electronic cruise control system included.

External Ports:

None (pre-OBD-II era, diagnostics typically done via specialized connectors or on-board diagnostics system).

🔧 Maintenance

Interval Miles:

7,500 - 10,000 miles or 12 months (whichever comes first) with synthetic oil.

Interval Km:

12,000 - 16,000 km or 12 months (whichever comes first) with synthetic oil.

Interval Miles:

60,000 miles (96,000 km) or 4-5 years. Critical component, failure causes severe engine damage.

Interval Miles Manual:

Check for leaks, change if contaminated or at high mileage (e.g., 80,000 - 100,000 miles).

Interval Miles Automatic:

Check fluid level and condition regularly. Change fluid and filter every 30,000 - 50,000 miles.

Brake Fluid:

DOT 3 or DOT 4

Power Steering Fluid:

ATF Dexron II/III or Pentosin CHF 11S (confirm specific requirement).

Engine:

Coolant flange leaks (plastic), vacuum hose deterioration, timing belt tensioner wear, distributor O-ring leaks, possible valve stem seal wear leading to oil consumption.

Electrical:

Headlight switch failures, intermittent electrical gremlins due to aged wiring and grounds, ABS sensor issues.

Suspension:

Worn control arm bushings, sagging front springs, worn tie rod ends.

Fuel System:

Failing fuel pressure regulator on KE-Jetronic systems, injector seal leaks.

Spark Plugs:

Replace every 30,000 miles (platinum plugs may last longer).

Air Filter:

Inspect every 15,000 miles, replace as needed or every 30,000 miles.

Cabin Filter:

If equipped, replace annually.

📚 Vehicle History

Audi Legacy:

Audi has a long history of performance and innovation, particularly with its Quattro all-wheel-drive system and luxurious interiors.

S4 B4 Generation:

The 1993 S4 is part of the B4 generation of the Audi 80/90/100 lineage, which saw significant styling and engineering updates. The S4 designation marked the higher-performance variant.

Manufacturing Location:

Ingolstadt, Germany

Production Years B4 S4:

1991-1994 (for the B4 S4 variant)

🏆 Awards & Recognition

Performance Legacy:

Audi S models are consistently recognized for their performance, handling, and build quality. The B4 S4 is a strong contender in the enthusiast market for its combination of practicality and power.

Din En Iso:

Not applicable in the modern sense for this vehicle's era.