🏷️ Basic Information

Make:

Porsche

Model:

944 S / 944 S2

Product Name:

PORSCHE 944 S 944 S2 Full Service & Repair Manual

👋 Introduction

Target Audience:

Porsche 944 owners, independent repair shops, automotive technicians.

Value Proposition:

Provides the same in-depth technical information used by dealerships and professional workshops, offering significant cost savings for maintenance and repair.

Unique Selling Points:

Lifetime access, multi-device compatibility, comprehensive factory data, detailed visuals, no hidden fees.

Automotive Legacy:

Porsche is renowned for engineering excellence, performance, and motorsport heritage, reflected in the 944's design and capabilities.

📋 Manual Details

Vehicle Coverage:

Porsche 944 S and 944 S2 models

Model Years Covered:

Specific to 944 S and 944 S2 production years (e.g., 1986-1988 for S, 1989-1991 for S2, manual will specify precise range)

Estimated Page Count:

Hundreds of pages (specific number not provided, but implies comprehensive detail)

Manual Type:

Factory Service Repair Workshop Manual

Language:

English (implied by product description and typical market for these manuals)

Format:

Digital Download (PDF)

Accessibility:

Downloadable to computer, tablet, smartphone

Usage License:

Lifetime use, no expiry dates, no renewal fees, usable on multiple devices/computers

Operating Systems:

Windows and macOS compatible

📖 Manual Coverage

Powertrain:

Engine (including specific 944 S and S2 variants), transmission (manual and automatic), driveline, fuel system, exhaust system

Chassis:

Suspension (front and rear), steering system, braking system (including ABS if equipped), wheels and tires

Electrical:

12V electrical system, battery, charging system, ignition system, lighting system, instrumentation, onboard diagnostics (OBD), comfort and convenience electronics

Body:

Body panels, doors, windows, interior trim, seats, exterior trim, climate control system

Climate Control:

HVAC system, A/C operation and repair, heater core, blower motor, ducting.

Fuel System Detailed:

Fuel tank, fuel pump, fuel lines, fuel injectors, fuel pressure regulation, fuel filter replacement.

Exhaust System:

Exhaust manifolds, catalytic converter (if equipped), mufflers, exhaust pipes, oxygen sensors.

Maintenance:

Scheduled maintenance (oil changes, fluid checks, filter replacements), tune-ups, inspections

Repair:

Component-level repair, disassembly, reassembly, part replacement for all covered systems

Troubleshooting:

Diagnostic procedures, fault finding, common problems and solutions, electrical circuit tracing

Specifications:

Torque specifications, fluid capacities, electrical specifications, tolerances, measurements

Engine Rebuild:

Complete engine teardown, inspection, part replacement (pistons, rings, bearings, seals), cylinder head service, valve train.

Transmission Rebuild:

Manual and automatic transmission overhaul, clutch replacement, torque converter service.

Brakes Overhaul:

Brake caliper, rotor, and pad replacement, brake fluid flush, ABS system troubleshooting and repair.

Depth Of Coverage:

Comprehensive factory-level detail suitable for professional mechanics and skilled DIY enthusiasts, covering everything from basic checks to complete overhauls.

📊 Manual Specifications

File Type:

PDF

Printability:

Printable (single pages or entire manual)

Binding Type:

N/A (Digital format)

Paper Type:

N/A (Digital format)

Illustrations:

Hundreds of detailed photos and diagrams, including exploded views

⚙️ Engine Specifications

Engine Type 944 S:

Naturally aspirated, inline-4 cylinder, DOHC

Displacement 944 S:

2.5 Liters (2479 cc)

Bore X Stroke 944 S:

104.0 mm x 73.0 mm

Compression Ratio 944 S:

10.2:1

Power Output 944 S:

190 hp (142 kW) at 6000 rpm

Torque 944 S:

207 lb-ft (281 Nm) at 4500 rpm

Engine Type 944 S2:

Naturally aspirated, inline-4 cylinder, DOHC

Displacement 944 S2:

2.5 Liters (2479 cc) - Increased bore and longer stroke compared to 944 S

Bore X Stroke 944 S2:

104.0 mm x 73.0 mm (Correction: S2 uses 104mm bore and 73mm stroke which is the same as S. The difference in displacement comes from a slight stroke increase or internal design changes. The factory stated displacement for S2 is indeed 2.5L but often quoted as a more powerful 2.7L equivalent performance-wise due to improved breathing and tuning. The actual S2 engine is a development of the 2.5L block.) The factual displacement is often cited as 2.5L, but the 2.7L engine offered in some markets was a precursor/alternative to the S2's specific tuning. Let's stick to confirmed 2.5L for S2 with enhanced performance.

Compression Ratio 944 S2:

10.9:1

Power Output 944 S2:

211 hp (157 kW) at 6000 rpm

Torque 944 S2:

207 lb-ft (281 Nm) at 4500 rpm (Correction: S2 torque is actually 245 Nm or 181 lb-ft at 4500 rpm. The S had 281 Nm. The manual would clarify specific torque figures.) Let's use the correct S2 torque value: 245 Nm (181 lb-ft) at 4500 rpm.

Fuel Delivery Type:

Bosch Motronic fuel injection (specific version will vary)

Fuel Type:

Unleaded gasoline (minimum 91 octane recommended, premium)

Engine Control Unit ECU:

Bosch Motronic ECU (specific model varies by year and market)

Timing Belt:

Timing belt driven OHC, critical maintenance item

🔧 Transmission

Transmission Type 944 S S2:

5-speed manual transaxle

Transmission Type Optional:

Tiptronic automatic transaxle (optional on S2, not commonly available on S)

Transaxle Layout:

Rear-mounted transaxle for optimal weight distribution

Manual Transmission Fluid:

Specific Porsche approved gear oil (e.g., Pentosin Gear Oil SAE 75W-90 or equivalent, check manual for exact spec)

Automatic Transmission Fluid:

Specific ATF (e.g., Dexron III or equivalent, check manual for exact spec)

📐 Dimensions

Body Style:

2+2 Coupe

Wheelbase:

2400 mm (94.5 inches)

Length:

4240 mm (167.0 inches)

Width:

1715 mm (67.5 inches)

Height:

1275 mm (50.2 inches)

Curb Weight 944 S:

Approx. 1250 kg (2756 lbs)

Curb Weight 944 S2:

Approx. 1350 kg (2976 lbs)

🛡️ Safety Features

Crash Test Ratings:

Not extensively rated by modern standards, but designed with robust safety cage and crumple zones for its era.

ABS:

Anti-lock Braking System (ABS) standard on S2, optional on late S models

Airbags:

Driver's side airbag standard on later models, passenger airbag optional/standard depending on year and market.

Seatbelts:

Three-point inertia-reel seatbelts

💡 Technology Features

Audio System:

Original Porsche or aftermarket audio systems, speakers, and amplifiers. Manual will cover wiring and basic diagnostics.

Cruise Control:

Optional cruise control system, covered in electrical sections.

Diagnostic Ports:

On-board diagnostics (OBD) port for engine and system diagnostics (early generation)

🔧 Maintenance

Oil Change Interval:

Typically every 7,500-10,000 miles or 12 months (refer to manual for exact recommendation based on driving conditions)

Timing Belt Replacement:

Crucial interval, usually 30,000-60,000 miles or 3-5 years. Critical to follow manual. Failure can cause catastrophic engine damage.

Engine Oil Type:

High-quality synthetic or semi-synthetic engine oil, viscosity grade typically 0W-40 or 5W-40 (check manual for specific Porsche A40 approval or equivalent)

Coolant Type:

Porsche-approved coolant/antifreeze (ethylene glycol-based, typically 50/50 mix with distilled water)

Brake Fluid Type:

DOT 4 or DOT 5.1 brake fluid (check manual for specific Porsche recommendation)

Common Problem 1:

Timing belt failure (critical maintenance item)

Common Problem 2:

Fuel pressure regulator diaphragm failure

Common Problem 3:

Accessory belt tensioner issues

Common Problem 4:

Minor oil leaks (e.g., oil cooler seals, valve cover gaskets)

Common Problem 5:

Cracked dashboard (common in older cars exposed to sun)

Oil Filter Part Number:

Example: Mahle OC28 or equivalent (check manual for exact Porsche part number or cross-reference)

Air Filter Part Number:

Example: Mahle LX169 or equivalent (check manual for exact Porsche part number or cross-reference)

📚 Vehicle History

Manufacturer Focus:

Porsche's reputation for performance, handling, and driver engagement.

944 Lineage:

Successor to the 924, the 944 was a significant evolution, featuring a more powerful engine, improved chassis, and distinct styling. The S and S2 models represented the performance pinnacle of the 944 line.

Production Period 944:

1981-1991

Production Period 944 S:

1986-1988

Production Period 944 S2:

1989-1991

Manufacturing Location:

Neckarsulm, Germany

🏆 Awards & Recognition

Automotive Press Reviews:

The Porsche 944 series was generally well-received by automotive press for its handling, balance, and performance, often compared favorably to contemporary sports cars from Germany and Italy.

Handling Reputation:

Consistently praised for its balanced chassis and rewarding driving dynamics.