The 1986 Fiero Service Manual provides comprehensive technical information for the Pontiac Fiero, a mid-engine sports car produced by General Motors. This manual covers engine specifications, transmission systems, electrical systems, suspension, brakes, steering, body components, and maintenance procedures for the 1986 model year. Below are key sections for technical specifications, maintenance procedures, troubleshooting, and repair guidelines.
Complete technical specifications for the 1986 Pontiac Fiero including dimensions, capacities, and performance data.
| Specification | Details |
|---|---|
| Engine Type | 2.5L Iron Duke I4 / 2.8L LB6 V6 |
| Horsepower | 92 hp (I4) / 140 hp (V6) |
| Transmission | 4-speed manual / 3-speed automatic |
| Wheelbase | 92.8 inches |
| Curb Weight | 2,500-2,700 lbs |
| Fuel Capacity | 10.2 gallons |
| Brake System | Front disc / rear drum |
| Suspension | Independent front and rear |
| Fuel Economy | 22-28 mpg |
| Production Year | 1986 |
Detailed information on engine components, service procedures, and specifications.
WARNING! Always disconnect battery before working on electrical components. Use proper lifting equipment for engine removal.
Service procedures for manual and automatic transmissions, clutch, and drive axles.
CAUTION! Use proper transmission jacks and safety stands when working underneath vehicle.
Front and rear suspension components, alignment specifications, and steering system service.
Front Suspension: MacPherson struts, control arms, ball joints, tie rods. Rear Suspension: Trailing arms, coil springs, shock absorbers.
Alignment Specifications: Camber, caster, toe settings. Steering: Rack and pinion system, power steering pump service. Wheel bearings: Front and rear bearing replacement procedures.
Hydraulic brake system service including disc brakes, drum brakes, and parking brake.
Tip: Always replace brake components in axle sets and use proper brake cleaning solvents.
Body panel replacement, interior component service, and trim procedures.
WARNING! Use proper trim removal tools to avoid damage to plastic components.
Recommended maintenance intervals and service procedures.
| Service Interval | Required Maintenance |
|---|---|
| 3,000 miles | Oil and filter change |
| 6,000 miles | Tire rotation, brake inspection |
| 15,000 miles | Air filter replacement, coolant service |
| 30,000 miles | Spark plugs, fuel filter, transmission fluid |
| 60,000 miles | Timing belt, coolant hoses, brake fluid |
Common problems and diagnostic procedures for the 1986 Fiero.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Ignition system, fuel delivery | Check spark, fuel pressure, ignition timing |
| Overheating | Cooling system, thermostat | Check coolant level, radiator, water pump |
| Brake pulsation | Warped rotors | Inspect and machine or replace rotors |
| Electrical issues | Ground connections, battery | Check grounds, battery terminals, alternator |
| Transmission slipping | Low fluid, worn components | Check fluid level and condition, adjust linkage |
Important safety information for working on the 1986 Fiero.
Always use jack stands when working under vehicle. Disconnect battery before electrical work. Use proper lifting points for jack and stands. Wear safety glasses when working with chemicals or under vehicle. Properly support engine and transmission during removal.
CAUTION! The Fiero's mid-engine layout requires special procedures for engine access and service.
Factory-issued service bulletins and updates for the 1986 Fiero.
For additional technical support, contact Pontiac Customer Service or authorized dealerships.