Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC1987FIREBIRD FORMULA, 5.0 H, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEMIGNITION SYSTEM - DIRECT IGNITION SYSTEM (DIS)REMOVAL & INSTALLATIONDIS IGNITION MODULE R & I
1987 Pontiac Firebird Formula, 5.0 H, Automatic
Dis Ignition Module R & I
1987 Pontiac Firebird Formula, 5.0 H, AutomaticSECTION Dis Ignition Module R & I
- Disconnect negative battery cable. Unplug connectors at ignition module. Disconnect spark plug wires from coil pack. Remove ignition module from engine block. Remove coils and assembly plate.
- On 2.5L engine, inspect crankshaft sensor "O" ring for wear, cracks, or other damage. See Figure. Replace if necessary. Lubricate new "O" ring with engine oil before installing. To install, reverse removal procedure.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.