Porsche 968 1993 Factory Service Repair Manual

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🏷️ Basic Information Identification Make: Porsche Model: 968 Year: 1993 Codes Chassis Code: 944 G2 👋 Introduction Market Position Vehicle Segment: Front-engined, rear-wheel-drive, luxury sports coupe/cabriolet. Competitive Analysis Primary Competitors:...

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Type: Car

Vendor:

Sku: 370188

Tags: 1993 968 Car Cars Porsche

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Description

🏷️ Basic Information

Identification

Make:

Porsche

Model:

Year:

Codes

Chassis Code:

944 G2

👋 Introduction

Market Position

Vehicle Segment:

Front-engined, rear-wheel-drive, luxury sports coupe/cabriolet.

Competitive Analysis

Primary Competitors:

Nissan 300ZX (Z32), Toyota Supra (Mk3/Mk4), Mazda RX-7 (FC/FD), Chevrolet Corvette (C4), BMW 8 Series (E31).

Key Features

Engine Layout:

Front-mounted inline-four engine, transaxle layout for optimal weight distribution.

Unique Technology:

Variocam variable valve timing system, innovative transaxle design, pop-up headlights.

Market Appeal

Target Audience:

Enthusiast drivers seeking a blend of performance, handling, and Porsche build quality.

📋 Manual Details

Coverage Areas

Manual Type:

Factory Service Repair Manual

Language:

English

Format:

Printed

Page Count

Estimated Page Count:

1500+

Manual Type

Documentation Source:

Factory Official (Reprint)

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Complete engine disassembly, assembly, diagnostics, and repair procedures for the 3.0L M44/43 engine.

Engine Management:

Detailed information on Motronic 2.10 engine management system, sensors, actuators, wiring diagrams, and troubleshooting.

Fuel System:

Fuel injection system, fuel pump, injectors, fuel pressure regulation, and evaporative emission control system.

Cooling System:

Radiator, water pump, thermostat, cooling fans, coolant flow, and pressure testing.

Exhaust System:

Exhaust manifold, catalytic converter, mufflers, and emissions control components.

Transmission Manual:

G50/30 transaxle disassembly, assembly, adjustment, clutch service, and synchro ring procedures.

Transmission Automatic:

Tiptronic automatic transaxle (optional) operation, diagnostics, and repair procedures.

Drivetrain:

Axles, CV joints, driveshafts, and transaxle mounts.

Suspension Front:

MacPherson strut system, control arms, ball joints, wheel bearings, sway bar, and spring/damper assembly.

Suspension Rear:

Semi-trailing arm suspension, trailing arms, shock absorbers, coil springs, and sway bar.

Steering System:

Power steering pump, steering rack, tie rods, and steering column adjustments.

Brakes Front:

Brake calipers, rotors, pads, brake lines, and ABS system components.

Brakes Rear:

Brake calipers, rotors, pads, brake lines, and ABS system components.

Electrical System:

12V battery, alternator, starter motor, ignition system, and charging circuits.

Lighting System:

Headlights (pop-up), taillights, interior lighting, and associated wiring.

Body Exterior:

Body panels, doors, hood, trunk lid, bumpers, mirrors, and seals.

Body Interior:

Dashboard, seats, door panels, headliner, carpeting, and trim components.

HVAC System:

Air conditioning, heating, ventilation, blower motor, and climate control panel.

Body Control Modules:

Central locking, power windows, power mirrors, and alarm system.

Body Structural:

Chassis, frame, and body shell repair information.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, fluid checks, spark plug replacement, belt adjustments.

Component Removal Installation:

Step-by-step instructions for removing and installing all major mechanical and electrical components.

Disassembly Assembly:

Detailed procedures for taking apart and reassembling complex components like the engine and transmission.

Troubleshooting:

Diagnostic flowcharts, symptom analysis, and corrective actions for common and uncommon issues.

Adjustment Calibration:

Procedures for aligning mechanical and electronic systems, such as ignition timing, valve lash, and sensor calibration.

Wiring Diagrams:

Comprehensive electrical schematics for all vehicle systems, including lighting, engine management, ABS, and comfort features.

Torque Specifications:

Precise torque values for all fasteners and critical components to ensure correct assembly and prevent damage.

Special Tools Equipment:

Identification and usage of specialized tools and equipment required for specific Porsche 968 service procedures.

Technical Depth

Diagnostic Capabilities:

Advanced diagnostic procedures, including fault code reading (where applicable), sensor data analysis, and component testing.

Rebuild Procedures:

Comprehensive instructions for complete engine and transmission rebuilds, including internal component specifications.

Component Level Repair:

Detailed repair instructions for individual components, such as cylinder head overhauls, transmission synchro replacement, and ABS modulator service.

📊 Manual Specifications

File Format

Print Quality:

High-resolution scans of original factory documents, ensuring clarity of text and diagrams.

Print Quality

Binding Type:

Professional paperback binding, designed for durability and ease of use in a workshop environment.

Binding Type

Paper Type:

Durable, high-quality paper stock to withstand frequent handling and workshop conditions.

⚙️ Engine Specifications

Primary Engine

Engine Code:

M44/43

Engine Type:

Naturally Aspirated Inline-4

Displacement:

2990 cc (3.0 Liters)

Performance

Horsepower:

237 hp @ 6200 rpm

Torque:

225 lb-ft @ 4800 rpm

Redline:

6700 rpm

Fuel System

Fuel Delivery:

Bosch Motronic 2.10 Fuel Injection

Fuel Type:

Unleaded Premium Gasoline (91+ Octane)

🔧 Transmission

Standard

Transmission Type:

6-Speed Manual (G50/30 transaxle)

Optional

Transmission Type:

4-Speed Tiptronic Automatic (with manual shifting option)

Features

Gear Ratios Manual:

1st: 3.154, 2nd: 1.895, 3rd: 1.370, 4th: 1.071, 5th: 0.875, 6th: 0.724, Final Drive: 3.444

Transmission Fluid Type:

Pentosin G50 SAE 75W-90 GL-4 (or equivalent)

📐 Dimensions

Exterior

Length:

170.2 in (4323 mm)

Width:

69.9 in (1775 mm)

Height:

50.0 in (1270 mm)

Wheelbase:

94.5 in (2400 mm)

Weights

Curb Weight:

3131 lbs (1420 kg) (Coupe), 3229 lbs (1465 kg) (Cabriolet)

Cargo

Trunk Capacity:

Approx. 6.8 cu ft (rear storage compartment)

🛡️ Safety Features

Ratings

Crash Test Data:

NHTSA and IIHS data from the era may be limited; focus on passive safety features and structural integrity.

Active Features

Anti-lock Braking System (ABS) standard on all models.

Traction Control:

Porsche Traction Management (PTM) not present; limited-slip differential (LSD) often standard or optional.

Passive Features

Airbags:

Driver-side airbag standard, passenger-side airbag optional.

Seatbelts:

Three-point inertia-reel seatbelts with pre-tensioners.

Rollover Protection:

Pop-up roll bar integrated behind seats (Cabriolet).

💡 Technology Features

Infotainment

Audio System:

Factory cassette player with optional CD changer, often featuring premium sound systems from Blaupunkt or Becker.

Driver Assistance

Cruise Control:

Standard electronic cruise control.

Connectivity

Diagnostics Port:

OBD-I diagnostic port (location varies, consult manual for specific pinouts and test procedures).

🔧 Maintenance

Service Intervals

Oil Change Interval:

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

Timing Belt Replacement:

Replace every 60,000 miles or 5 years. Critical due to interference engine design.

Coolant Flush:

Every 2 years or 30,000 miles.

Fluid Specifications

Engine Oil Type:

SAE 0W-40 or 5W-40 Synthetic (API SJ or higher)

Engine Oil Capacity:

7.5 Liters (7.9 Quarts)

Coolant Type:

Porsche Approved Antifreeze/Coolant (G40 specification, typically a phosphate-free, silicate-free hybrid organic acid technology - HOAT)

Brake Fluid Type:

DOT 4 (or DOT 4+)

Known Issues

Variocam Pads:

Wear of the Variocam activation pads can lead to rattling noises and reduced power.

Fuel Pump Regulator:

Potential failure of the fuel pump or pressure regulator can cause starting issues or poor performance.

Window Regulators:

Common wear and tear on power window regulators, leading to slow or inoperative windows.

Heater Control Valve:

Leakage or malfunction of the heater control valve can affect cabin temperature.

ABSorbent Material Degradation:

The foam absorbent material in the doors and other areas can degrade over time, causing water ingress or musty odors.

📚 Vehicle History

Brand Heritage

Porsche Legacy:

Continued Porsche's reputation for performance engineering and driver-focused design.

Model Evolution

Predecessor:

Successor to the Porsche 944, sharing its basic platform but with significant updates and a new powertrain.

Design Philosophy:

Focus on weight distribution via transaxle, advanced engine technology, and refined styling over the 944.

Production

Production Years:

1991-1995

Production Location:

Neckarsulm, Germany (Audi AG facility, under Porsche contract)

Sales Volume:

Approximately 14,963 units worldwide.