1994 Acura Integra LS Service Manual

The 1994 Acura Integra LS is a compact sports sedan featuring a 1.8L DOHC 16-valve inline-4 engine (B18B1), 5-speed manual transmission, front-wheel drive, 4-wheel independent double wishbone suspension, power steering, front disc/rear drum brakes, and comprehensive electronic systems. This service manual covers maintenance procedures, specifications, troubleshooting, and repair instructions for all major components.

Vehicle Specifications

Key technical data and dimensions for the 1994 Acura Integra LS model.

Maintenance Schedule

Recommended service intervals for optimal vehicle performance and longevity.

1. Oil and filter change: Every 7,500 miles or 12 months
2. Air filter replacement: Every 30,000 miles
3. Spark plugs: Replace every 30,000 miles
4. Timing belt: Replace every 90,000 miles
5. Brake fluid: Replace every 2 years
6. Coolant: Replace every 2 years or 30,000 miles

WARNING! Always use genuine Acura parts for replacement. Follow torque specifications precisely.

Engine System

Detailed service procedures for the B18B1 engine components.

1. Valve adjustment: Check every 15,000 miles
2. Timing belt replacement: Critical at 90,000 miles
3. Compression test: Perform if misfiring occurs
4. Oil pressure: Should be 50-60 psi at 3000 rpm
5. Ignition timing: Set to 16° BTDC at idle

CAUTION! Engine must be cool before performing maintenance. Use proper safety equipment.

Transmission & Drivetrain

• Transmission Type: 5-speed manual
• Gear Ratios: 1st: 3.230, 2nd: 1.900, 3rd: 1.269, 4th: 0.966, 5th: 0.714
• Final Drive: 4.266:1
• Clutch: Hydraulic, single dry plate
• Transmission Fluid: Honda MTF only
• Fluid Capacity: 2.1 quarts
• CV Joints: Inspect every 15,000 miles

Suspension & Steering

Double wishbone suspension system with power steering.

Front Suspension: Independent double wishbone with coil springs, stabilizer bar

Rear Suspension: Independent double wishbone with coil springs

Steering: Power-assisted rack and pinion

Wheel Alignment Specifications: Toe-in: 0° ± 0.12°, Camber: -0°30' ± 0°45', Caster: +2°00' ± 1°

Brake System

Front disc and rear drum brake system with ABS (optional).

1. Brake pad replacement: When thickness below 3mm
2. Rotor thickness: Minimum 20.0mm front, 8.0mm rear
3. Brake fluid: DOT 3 or DOT 4 only
4. Bleeding sequence: RR, LR, RF, LF

Tip: Always replace brake pads in axle sets. Bed new pads properly.

Electrical System

12-volt electrical system with comprehensive wiring diagrams.

1. Battery: 12V 45AH, maintain clean terminals
2. Alternator: 80 amp output
3. Starter: 1.4 kW reduction type
4. Fuse box: Located under dashboard
5. Relays: Main under-hood fuse/relay box
6. Spark plug gap: 0.039-0.043 inches

WARNING! Disconnect battery before electrical work. Follow wiring diagrams precisely.

Fuel System

Multi-point fuel injection system specifications and service.

Fuel Pressure: 38-46 psi (key on, engine off)

Fuel Filter: Replace every 30,000 miles

Injector Resistance: 10-13 ohms at 20°C

Fuel Pump: In-tank electric, 12V

Cooling System

Pressurized cooling system with electric fan.

Radiator Cap Pressure: 13-15 psi

Thermostat Opening: 180°F (82°C)

Coolant Capacity: 5.8 quarts with heater

Coolant Type: Honda All Season Antifreeze/Coolant

CAUTION! Never open radiator when hot. Use proper coolant mixture.

Troubleshooting Guide

Reset: Disconnect battery for 10 minutes to reset ECU if needed.

Service: Contact Acura dealer or certified technician for complex repairs