1987 Porsche 928 S4 Owner's Manual PDF

The 1987 Porsche 928 S4 is a luxury grand tourer featuring a 5.0L V8 engine producing 316 horsepower, 4-speed automatic or 5-speed manual transmission, advanced electronic systems, power steering, ABS brakes, climate control, and premium audio system. This manual covers vehicle operation, maintenance schedules, technical specifications, troubleshooting, and warranty information for proper ownership experience.

1. Vehicle Overview 2. Instrument Cluster 3. Controls and Operation 4. Technical Specifications 5. Maintenance Schedule 6. Driving Instructions 7. Electrical System 8. Brake System 9. Engine and Transmission 10. Safety Features 11. Troubleshooting Guide

Vehicle Overview

Key components: 5.0L V8 engine, automatic or manual transmission, power-assisted steering, ABS braking system, climate control, power windows and mirrors.

Feature	Description
Engine	5.0L V8 with electronic fuel injection
Transmission	4-speed automatic or 5-speed manual
Power Output	316 hp @ 6000 rpm
Torque	317 lb-ft @ 3000 rpm
Brakes	Four-wheel disc with ABS
Suspension	Independent front and rear
Fuel System	85-liter fuel tank
Seating	2+2 configuration with leather upholstery
Audio System	Premium cassette stereo with amplifier
Climate Control	Automatic temperature regulation

Instrument Cluster

Dashboard features: Speedometer, tachometer, fuel gauge, temperature gauge, warning lights, and information display.

Speedometer: 0-160 mph (0-260 km/h) scale
Tachometer: 0-7000 rpm with redline at 6200 rpm
Fuel gauge: Monitor fuel level with low fuel warning light
Temperature gauge: Engine coolant temperature monitoring
Warning lights: Check engine, oil pressure, brake system, ABS

WARNING! Immediately address any illuminated warning lights to prevent vehicle damage.

Controls and Operation

Steering column: Turn signal, wiper controls, cruise control. Center console: Climate controls, audio system, power window switches.

Ignition: Insert key and turn to start position
Gear selector: Automatic transmission gate pattern (P-R-N-D-3-2-1)
Climate control: Set desired temperature and fan speed
Power windows: Switches on center console and doors
Seat adjustment: Manual and power adjustments available

CAUTION! Familiarize yourself with all controls before driving.

Technical Specifications

Engine: 5.0L V8, aluminum block and heads
Displacement: 4957 cc
Compression Ratio: 10.0:1
Fuel Requirement: Premium unleaded (91 octane minimum)
Transmission: 4-speed automatic or 5-speed manual
Final Drive Ratio: 3.09:1 (automatic), 3.22:1 (manual)
Brakes: Ventilated discs front and rear
Wheels: 16-inch alloy wheels
Tires: 225/50 VR16 front, 245/45 VR16 rear
Curb Weight: 3450 lbs (1565 kg)

Maintenance Schedule

Regular maintenance intervals for optimal performance and longevity.

Service Interval	Required Maintenance
Every 7,500 miles	Oil and filter change, tire rotation
Every 15,000 miles	Air filter replacement, brake inspection
Every 30,000 miles	Spark plug replacement, coolant flush
Every 60,000 miles	Timing belt replacement, transmission service
Every 2 years	Brake fluid replacement

NOTE: Severe driving conditions may require more frequent maintenance.

Driving Instructions

Proper driving techniques for optimal performance and safety.

Starting: Depress brake, turn key to start position
Shifting: Allow transmission to fully engage before accelerating
Braking: Apply steady pressure, ABS will prevent wheel lock-up
Cornering: Smooth steering inputs for best handling
Highway driving: Use cruise control for consistent speed

Tip: Allow engine to warm up before aggressive driving.

Electrical System

12-volt electrical system with 90-amp alternator and maintenance-free battery.

Battery: Located in rear luggage compartment
Fuses: Main fuse panel under dashboard
Lighting: Halogen headlights with automatic leveling
Accessories: Power outlets for additional equipment
Charging: Alternator provides charging while engine running

WARNING! Disconnect battery before performing electrical work.

Brake System

Four-wheel disc brakes with anti-lock braking system (ABS).

Brake pads: Inspect every 15,000 miles
Brake fluid: Replace every 2 years
ABS operation: Pulsating pedal during hard braking is normal
Parking brake: Manual lever between seats
Brake wear: Monitor through dashboard warning lights

CAUTION! Brake system maintenance should only be performed by qualified technicians.

Engine and Transmission

Longitudinal front-engine, rear-wheel drive configuration.

Component	Specification
Engine Type	90-degree V8
Bore x Stroke	97.0 mm x 78.9 mm
Valvetrain	SOHC, 2 valves per cylinder
Fuel Delivery	Bosch LH-Jetronic fuel injection
Transmission Options	4-speed automatic or 5-speed manual
Differential	Limited-slip differential

Safety Features

Advanced safety systems for driver and passenger protection.

ABS braking system
Three-point seat belts
Reinforced passenger cabin
Energy-absorbing bumpers
Day/night rearview mirror
Side impact protection

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Engine won't start	Battery, fuel, ignition	Check battery charge, fuel level, spark plugs
Rough idle	Spark plugs, air filter	Replace spark plugs, check air filter
Brake vibration	Warped rotors	Inspect and resurface or replace rotors
Overheating	Coolant, thermostat	Check coolant level, replace thermostat
Electrical issues	Battery, alternator	Test battery and alternator output

Service: Contact authorized Porsche dealership for professional service

Emergency: Porsche Roadside Assistance available 24/7