1994 Porsche 968 Workshop Service Repair Manual

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🏷️ Basic Information Identification Make: Porsche Model: 968 Year: 1994 Codes Chassis Code: 944 S3 / 968 Engine Code: M44.43 👋 Introduction Market Position Vehicle Class: Front-engine, rear-wheel-drive sports coupe...

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Description

🏷️ Basic Information

Identification

Make:

Porsche

Model:

Year:

Codes

Chassis Code:

944 S3 / 968

Engine Code:

M44.43

👋 Introduction

Market Position

Vehicle Class:

Front-engine, rear-wheel-drive sports coupe and cabriolet

Segment:

Luxury Grand Tourer / Sports Car

Competitive Analysis

Key Competitors Era:

BMW 8 Series, Nissan 300ZX, Toyota Supra, Chevrolet Corvette

Key Features

Design Philosophy:

Transaxle layout for optimal weight distribution, aerodynamic styling, advanced engineering for its time

Technological Advancements:

Variocam (variable valve timing), ABS, optional Tiptronic transmission

Manual Value Proposition

Target Audience:

Porsche 968 owners, independent repair shops, automotive enthusiasts seeking in-depth knowledge

Benefit To Owner:

Empowers owners to perform maintenance and repairs, understand vehicle systems, and diagnose issues accurately

📋 Manual Details

Coverage Areas

Manual Type:

Workshop Service Repair Manual

Language:

English

Format:

Page Count:

Approximately 1200 pages

📖 Manual Coverage

Systems Covered

Engine:

Complete overhaul, diagnosis, component testing, timing belt replacement, fuel injection system, ignition system, cooling system, exhaust system

Transmission:

Manual (G64/00) and Tiptronic (automatic) transmission repair, fluid specifications, troubleshooting

Drivetrain:

Clutch system, driveshafts, differential, wheel bearings

Suspension:

Front and rear suspension components, shock absorbers, springs, bushings, alignment specifications

Brakes:

Brake system diagnosis, hydraulic components, ABS system, rotor and pad replacement, bleeding procedures

Steering:

Power steering system, steering rack, tie rod ends

Electrical:

Wiring diagrams, lighting systems, instrumentation, starter, alternator, battery, comfort features, diagnostic codes

Body And Chassis:

Body panel removal and installation, glass replacement, interior trim, chassis adjustments, rust prevention

Climate Control:

HVAC system service, refrigerant handling, component testing

Fuel System:

Fuel tank, fuel pump, fuel injectors, fuel pressure regulator

Procedures Included

Maintenance:

Scheduled maintenance intervals, fluid changes, filter replacements, spark plug replacement, timing belt inspection and replacement

Troubleshooting:

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

Repair:

Step-by-step repair instructions for all major components and systems, including torque specifications

Disassembly And Assembly:

Detailed procedures for removing and reinstalling all major vehicle components

Diagnostics:

OBD-I diagnostic trouble codes (DTCs) and diagnostic flowcharts

Technical Depth

Depth Level:

Comprehensive (from basic maintenance to full engine and transmission rebuilds)

📊 Manual Specifications

File Format

File Type:

PDF (Portable Document Format)

Searchability:

Searchable text for quick information retrieval

Printability:

Printable pages for physical reference

Print Quality

Image Resolution:

High-resolution images and diagrams

Binding Type

Digital Format:

N/A (Digital file)

Paper Type

Digital Format:

N/A (Digital file)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Naturally Aspirated Inline-4

Displacement:

3.0 Liters (2990 cc)

Bore X Stroke:

104.0 mm x 88.0 mm

Compression Ratio:

11.3:1

Valve Train:

DOHC, 4 valves per cylinder, Variocam variable valve timing

Performance

Horsepower:

236 hp @ 6200 rpm

Torque:

225 lb-ft @ 4500 rpm

Fuel System

Fuel Delivery:

Bosch Motronic M2.10 (Engine Management System), Sequential Fuel Injection

Recommended Fuel:

Premium Unleaded Gasoline (91 octane or higher)

Cooling System

Cooling Type:

Liquid-cooled, thermostatically controlled

Lubrication System

Oil Capacity:

7.5 Liters (8.0 US Quarts)

Oil Filter Part Number:

Porsche Genuine: 999.107.001.00 (or equivalent)

Ignition System

Ignition Type:

Distributorless Ignition System (DIS) with coil-on-plug or coil-near-plug configuration

Timing Belt

Timing Belt Replacement Interval:

Recommended every 4 years or 50,000 miles (whichever comes first), due to age and potential degradation of rubber components

🔧 Transmission

Standard

Transmission Type:

6-speed Manual (G64/00)

Optional

Transmission Type:

4-speed Automatic (Tiptronic)

Features

Manual Transmission Fluid:

Porsche TeSys 0W-30 (or equivalent GL-4 SAE 75W-90)

Automatic Transmission Fluid:

Esso LT 71141 (or equivalent ATF)

Clutch Type:

Hydraulically operated dry single-plate clutch

📐 Dimensions

Exterior

Length:

4435 mm (174.6 in)

Width:

1735 mm (68.3 in)

Height:

1275 mm (50.2 in)

Wheelbase:

2500 mm (98.4 in)

Front Track:

1456 mm (57.3 in)

Rear Track:

1482 mm (58.3 in)

Weights

Curb Weight:

Approx. 1470 kg (3240 lbs) for Coupe, 1520 kg (3350 lbs) for Cabriolet

Gross Vehicle Weight Rating:

Approx. 1830 kg (4035 lbs)

Wheels And Tires

Wheel Bolt Pattern:

5x130

Standard Wheel Size:

17 x 7.0J (front), 17 x 8.0J (rear)

Standard Tire Size:

205/50 ZR17 (front), 225/45 ZR17 (rear)

🛡️ Safety Features

Ratings

Crash Test Ratings:

NHTSA and IIHS ratings are not readily available for this model year from this era; emphasis was on robust construction.

Passive Features

Airbags:

Driver's side airbag standard

Seatbelts:

3-point inertia reel seatbelts with pretensioners

Body Structure:

Reinforced safety cage, crumple zones

Active Features

Anti-lock Braking System (ABS) standard

Traction Control:

Optional (often referred to as ASR - Acceleration Slip Regulation)

💡 Technology Features

Infotainment

Audio System:

Factory cassette player with optional CD changer integration and premium sound system (e.g., Blaupunkt or Becker).

Driver Assistance

Standard Anti-lock Braking System

Tiptronic:

Optional adaptive automatic transmission with manual shift mode.

Connectivity

Diagnostics:

OBD-I diagnostic port for engine and transmission fault code retrieval.

🔧 Maintenance

Service Intervals

Oil And Filter Change:

Every 7,500 miles or 1 year, whichever comes first. Use synthetic oil.

Air Filter Replacement:

Every 15,000 miles or 1 year

Fuel Filter Replacement:

Every 30,000 miles

Spark Plug Replacement:

Every 30,000 miles. Use high-quality iridium or platinum plugs.

Fluid Specifications

Engine Oil Type:

Synthetic 5W-40 or 5W-50 (check manual for specific Porsche approvals)

Coolant Type:

Glysantin G48 (Porsche approved coolant, typically a blue/green color) mixed 50/50 with distilled water

Brake Fluid Type:

DOT 4 or DOT 5.1

Known Issues

Variocam Wear:

Early Variocam units could experience wear; manual covers inspection and replacement.

Window Regulator Failure:

Common issue with power window regulators; manual provides repair procedures.

Electrical Gremlins:

Aging wiring harnesses and connectors can lead to intermittent electrical issues; comprehensive wiring diagrams are essential.

Fuel Level Sender Failure:

Fuel gauge issues can arise from faulty sender units in the tank.

Door Panel Sag:

Door panels can detach due to plastic clip failure; manual covers removal and reattachment.

📚 Vehicle History

Brand Heritage

Porsche Legacy:

Porsche's long history of performance engineering, racing success, and iconic sports car design

Model Evolution

Predecessor:

Porsche 944 S2

Development:

The 968 was an extensive revision of the 944 platform, featuring a new engine with Variocam, revised bodywork, and updated interior.

Production

Production Years:

1991-1995

Manufacturing Location:

Stuttgart, Germany

Production Volume:

Approximately 11,000 units worldwide (Coupe and Cabriolet combined)

Collectibility

Market Perception:

Increasingly recognized as a modern classic, offering Porsche performance and build quality at a more accessible price point than contemporary 911s.

🏆 Awards & Recognition

Recognitions

Automotive Press Reviews:

Generally praised for its handling, engine responsiveness (especially with Variocam), and Porsche build quality. Often cited as a refined alternative to the 911 of its era.

Specialty Publications:

Featured in numerous classic car and sports car publications as a significant model in Porsche's evolution.