1986.5 Toyota Supra Repair Manual

The 1986.5 Toyota Supra is a third-generation sports car featuring a 3.0L inline-6 engine (7M-GE), rear-wheel drive, 5-speed manual or 4-speed automatic transmission, independent rear suspension, and advanced electronics for its era. This repair manual covers maintenance, troubleshooting, and repair procedures for engine, transmission, suspension, brakes, electrical systems, and body components. Below are key sections for specifications, maintenance schedules, repair procedures, and troubleshooting.

Vehicle Specifications

Key technical data for the 1986.5 Toyota Supra including engine, transmission, and chassis specifications.

Maintenance Schedule

Recommended service intervals for optimal performance and longevity.

1. Oil and filter change: Every 5,000 miles or 6 months
2. Spark plugs: Replace every 30,000 miles
3. Timing belt: Replace every 60,000 miles
4. Coolant flush: Every 30,000 miles or 2 years
5. Brake fluid: Replace every 2 years
6. Transmission fluid: Every 30,000 miles
7. Air filter: Inspect every 15,000 miles

WARNING! Use only Toyota-approved fluids and genuine parts for optimal performance.

Engine Repair

Procedures for 7M-GE engine maintenance and repair.

1. Valve adjustment: Check every 30,000 miles
2. Timing belt replacement: Align marks carefully during installation
3. Head gasket replacement: Torque sequence critical for proper sealing
4. Fuel system service: Check fuel pressure and injector operation
5. Ignition system: Test coil packs and ignition timing

CAUTION! Always disconnect battery before working on electrical components.

Transmission Service

• Manual Transmission: W58 5-speed gearbox fluid change procedure
• Automatic Transmission: A340E fluid and filter service
• Clutch Replacement: Pressure plate and disc installation
• Shift Linkage: Adjustment for precise shifting
• Differential: Gear oil change and seal replacement

Suspension & Steering

Front MacPherson strut and rear independent suspension service procedures.

Front Suspension: Strut replacement, control arm bushings, ball joints. Rear Suspension: Trailing arms, lateral links, shock absorbers. Steering: Power steering pump, rack and pinion service, tie rod ends.

Brake System

Disc brake service and maintenance procedures.

1. Brake pad replacement: Front and rear procedure
2. Rotor resurfacing: Specifications and tolerances
3. Brake bleeding: Proper sequence for air removal
4. Parking brake: Cable adjustment and service
5. ABS system: Diagnostic procedures (if equipped)

Tip: Always replace brake components in axle sets for balanced braking.

Electrical Systems

Wiring diagrams and electrical component service.

1. Battery and charging system: Alternator output test
2. Starting system: Starter motor and solenoid testing
3. Lighting: Headlight, taillight, and signal light circuits
4. Instrument cluster: Speedometer and gauge repair
5. ECU diagnostics: Trouble code retrieval procedures
6. Power accessories: Window, lock, and mirror circuits

WARNING! Use proper circuit protection when testing electrical systems.

Body & Interior

Body panel alignment and interior component service.

Body: Door adjustment, hood and trunk alignment, weatherstrip replacement. Interior: Dashboard components, seat mechanisms, carpet installation. Exterior: Paint codes, trim pieces, glass replacement.

Troubleshooting

Reset: Disconnect battery for 15 minutes to reset ECU.

Service: Contact Toyota dealership or certified mechanic for complex issues.

Technical Bulletins

Factory service bulletins and common issues specific to 1986.5 Supra.

• Head bolt torque specification update
• Fuel injector cleaning procedure
• Dashboard crack prevention
• Rust prevention for quarter panels
• Transmission shift improvement modifications